Accept any two of the following or other
reasonable answers: dark upper surface makes it
inconspicuous to flying predators; light belly
makes it less conspicuous to predators looking
up from below; fins enable fish to swim away;
mouth has teeth for defense. 1,000 (5/2)
6. Sections 2 and 3 (page 105)
1. a
2. b
3. a
4. b
5. a
6. a
7. a
8. b
Key Terms (page 106)
1. computer simulation
2. material
3. brainstorming
4. technology
5. constraints
6. materials science
7. scientist
8. engineer
9. malleability
10. quality control
11. conductivity
12. magnetism
Chapter Review
Part A. Make a hypothesis about which color in the visible spectrum causes the most plant growth and which causes the least plant growth. It will not dissolve. (4, 5/2)
16. Archaeologists use carbon dating to determine the age of dead animals, plants, and humans. Possible answers include: yellow paint, wood
interior, solid, graphite core, 2�3 g
9. � The rock stays at rest at the top of the hill until the boy applies force that sends it rolling downhill. Electrons are in unpredictable motion. S (south)
7. � Concept Review (page 79)
1. compound (2/2)
2. positive, negative (2/2)
3. nucleus, protons, neutrons (1/1)
4. lowest (2/1)
5. polar bond (3/2)
6. nonpolar bond (3/2)
7. carbon, two (4/2)
8. Radioactive decay is the release of nuclear
particles and energy. gd+.� � � � � � � � � � � � " % * . 27.3 days
10. rotation
11. winter
12. a. (1, 3/1)
18. Pressure applied at any point to a confined liquid is transmitted unchanged throughout the liquid. Kelvin
Sections 2 and 3 (page 33)
1. g 8. circle graph
2. e 9. bar graph
3. b 10. line graph
4. a 11. line
5. d 12. circle
6. c 13. bar
7. f
Key Terms ( page 34)
1. mass
2. table
3. circle graph
4. 14. This will not form a solution. Punctuated equilibrium states that
rapid evolution of a species comes about by the
mutation of a few genes. Glencoe Science Virtual Labs. Glencoe Science Earth Science The Solar System 523 2002. mar5134. An electric generator converts motion to electric power. 4. (2/1)
12. Being aware of possible hazards and taking
precautions can prevent accidents in the science
laboratory. They all rarely combine with other elements. Make a hypothesis about which color in the visible spectrum causes the most plant growth and which causes the least plant growth. 8. Sun
6. So the solid must be crystalline. Vocabulary Review (page 87)
1. c (1/1)
2. f (6/2)
3. d (3/1)
4. i (1/1)
5. a (3/1)
6. g (1/1)
7. b (6/2)
8. e (3/1)
9. h (5/2)
Part B. 7. (1/1)
3. Answers may vary, but should include that an
introduced species may use up all of the resources needed by native species. Friction will never speed up an object because it always acts against the object�s direction of motion. � (33.3 m/s) (60 s/1 min) = 1,998 m/min =
2,000 m/min
Section 3 (page 33)
1. f
2. a
3. e
4. g or b
5. b or g
6. d
7. c
8. g
9. c
10. 2. Living things have a life span. Virtual Labs Update: December 2019 Major browsers, like Chrome, Edge, and Safari, block the use of Flash and Adobe has planned to completely kill the platform in 2020. Element name
4. 5�OJ QJ ^J hg hk F
12. In an electric motor, the field of a permanent
magnet moves a current-carrying wire.When the
current is reversed (as in alternating current), the
wire spins. They are from all different areas of science: Biology, Physics, Genetics, Earth Science, Physical Science, and ⦠d. How often does it erupt? 13. law of conservation of mass
Key Terms (page 48)
Chapter Review
Part A. 1. (7/3)
Reinforcement
Section 1 (page 55)
1. 2. artifact or hardware; methodology or technique; system of production; social-technical system
3. 14. 7. 6. lightning, energy from the Sun, and Earth�s heat
7. The amount of most nongaseous solutes that can dissolve in liquid solvents rises with temperature. Concept Review (page 26)
1. It shows a small, dense nucleus with electrons in the space around the nucleus. (3/1)
7. This indicates that some of the energy is being used to break the attractive forces between the particles in the solid. 2 atoms hydrogen, 1 atom carbon, 3 atoms
oxygen
20. Friction (3/1)
12. static (3/1)
13. sliding (3/1)
14. wheel (3/1)
15. strength (5/2)
16. terminal velocity (4/2)
17. inertia (6/3)
Part B. Weight (5/2)
7. equal to (5/2)
8. Cohesive forces between water molecules cause surface tension. Louis Pasteur
3. species
4. The star�s core, if it�s not too large,
becomes a neutron star. Name:_____ Photosynthesis Virtual Lab. Humans affect habitats by
replacing a forest or meadow with pavement,
lawns, buildings, and other development; by
dividing a habitat; by introducing species; and by
pollution. Possible answers include: flesh color (student
specific), solid filled with liquids, 7 cm, moves
through muscle and ligament connections
15. A light-year is the
distance light travels in one year, 9.5 trillion km. We have seasons because Earth�s axis is tilted. (3/1)
4. Correct your answers in a different color and be sure the document is shared with me. True
14. 7. transition
8. Site: bit.ly/pholab (you can type "glencoe photosynthesis" into a google search to find this resource) - Read the summary in the side bar which explains how colors of light affect plant growth. 1 (6/2)
Reinforcement
Section 1 (page 63)
1. (1/1)
2. Living things take in and use energy. 3. For each question, please type your name on the first line of each response, then answer. Answers will vary, but should indicate that the
Moon orbits Earth, or revolves around it. Its atomic number is 1. �! Molecules throughout the water press against
each other, transmitting the pressure unchanged
throughout the fluid. Key Terms (page 52)
1. d 9. c
2. b 10. i
3. a 11. f
4. n 12. h
5. l 13. j
6. m 14. o
7. e 15. k
8. g
Chapter Review
Part A. Section 2 (page 46)
1. freezing
2. boiling
3. melting
4. evaporating
5. (Emphasis is on illustrating inputs and outputs of matter and the transfer and transformation of energy in photosynthesis by plants and other photosynthesizing organismâs). 3. 1. Populations
11. are
Section 2 (page 15)
1. radioactive
2. embryology
3. sedimentary
4. fossils
5. vestigial
6. homologous
7. traits
Key Terms (page 16)
1. species
2. evolution
3. selection
4. gradualism
5. punctuated equilibrium
6. sedimentary
7. element
8. embryology
9. vestigial
10. variation
Chapter Review
Part A. As they do, the temperatures in the cloud begin to rise, and the heat becomes great enough to cause the atoms in the cloud to join together. Make a hypothesis about which color in the visible spectrum causes the most plant. Irregular galaxies come in all different kinds of shapes and are usually smaller than the other galaxies. 12. 7
3. The field gets weaker as you move farther from the magnet until it is unable to be detected. Individuals with traits most favorable for a
specific environment survive and pass on these
traits to offspring. A word equation can be very long. Rapidly produce a Photosynthesis Virtual Lab Answer Key without needing to involve specialists. (3�5/2)
' ( : ; > Q T h k ~ � � � � � � � � � Test each type of plant and use the ruler. Analyze data. Do not peek ahead of time!! 7. It is a reaction that releases energy. 1/1
9. Use the filings to map the magnetic field around each magnet. Gather information. Special disposal sites that separate the nuclear waste products from humans are necessary. Homeostasis
4. cells
5. organized
6. respond
7. energy
8. grow and develop
9. reproduce
Sections 3 and 4 (page 7)
1. spontaneous generation
2. Atomic number
2. 6. heart pacemaker and defibrillator
Section 3 (page 101)
1. defining the problem
2. to find other ideas that have been tried and succeeded or failed
3. Alternating current changes direction many
times per second; direct current flows only in
one direction. 6. Also hypothesized the existence of neutrally charged particles in the nucleus. Section 2 (page 74)
1. losing
2. positive
3. protons
4. electrons
5. gains
6. negative
7. ionic
8. regular
9. electrons
10. molecules
11. ions
12. nonpolar
13. covalent
14. polar
15. covalent
16. Synthetic elements (8/3)
Part B. Student B�s is more accurate because it is closer to the true value. Section 2 (page 56)
1. t� 5�CJ aJ hg h=n 5�OJ QJ ^J hg h1t CJ aJ h=n CJ OJ QJ ^J aJ hCo CJ OJ QJ ^J aJ h1t 5�CJ OJ QJ \�^J aJ h1t CJ OJ QJ ^J aJ , ? Graph A represents the melting of an amorphous solid. T
10. The chemical composition and structure of a
material. Graph B; as heat is added, the temperature first rises, then remains constant as the solid melts, then rises again. (2/2)
11. 16. 8/3
Part B. 5/2 7. b. Vocabulary Review (page 117)
1. a (2/1)
2. i (4/2)
3. f (4/2)
4. h (1/1)
5. b (1/1)
6. e (1/1)
7. g (6/3)
8. c (1/1)
9. d (3/1)
10. accelerate (2/1)
11. � �0 � � � � � � � 6� � � �� �� �� �4� 4� Vocabulary Review (page 107)
1. k (1/1)
2. g (2/1)
3. n (1/1)
4. h (2/1)
5. d (3/1)
6. m (2/1)
7. e (2/1)
8. l (4/2)
9. b (6/2)
10. a (7/3)
11. i (7/3)
12. o (5/2)
Part B. T
6. The force of gravity on a bug can be less than
the water�s surface tension. T
15. START. 9. Directed Reading for Content Mastery
Overview (page 39)
1�3. Water molecules are excreted by our skin. Possible answers include: ice�drinks, skating, preserving food; water�drinking, bathing, swimming; gas� cooking foods, ironing, generating electricity
4. The atoms have just changed
partners to form new chemical bonds. (3/2)
Part B. 8/3
11. �! 10. Site 1: Glencoe Photosynthesis Lab Site: bit.ly/pholab Experiment Question: "Which colors of the light spectrum are most important for plant growth?" Biology Lab Answers Photosynthesis Author: builder2.hpd-collaborative.org-2021-02-01T00:00:00+00:01 Subject: Biology Lab Answers Photosynthesis Keywords: biology, lab, answers, photosynthesis Created Date: 2/1/2021 4:40:59 PM which include an answer to the original question /. 4. This will not form a solution. Section 2 and 3 (page 51)
1. Living things grow. Nuclear waste products are a problem because they continue to produce harmful radiation for long periods of time. Physical changes change the way something
looks, but the substance stays the same. Ammonia is made of nitrogen and hydrogen. 10 cm
10. � 3. (1/1)
9. t� CJ aJ &hg h6n| 5�CJ OJ QJ \�^J aJ hg h6n| CJ OJ QJ ^J aJ hg h6Y CJ OJ QJ ^J aJ F t � � 0 M N b n { � � � � � R � � = b u � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7$ 8$ H$ gdk Photosynthesis Virtual Lab Answer Key posted Nov 20, 2014, 9:25 AM by Cynthia Allen [ updated Feb 25, 2015, 4:54 PM] When you have COMPLETED the virtual lab, check your answers. The strong nuclear force is the force that holds
the protons and the neutrons together in the
nucleus of the atom. Living things reproduce. An eclipse happens when Earth, the Sun, and
the Moon are lined up in a certain way. Answers may vary. 2. One example is a person
trying to push a space shuttle by hand. (4/2)
2. The atomic number is the number of protons in the nucleus of the atom. SI
5. celsius
6. bar graph
7. Possible answers include: red, hard, rough
gravelly surface, rectangular solid
7. In the blank portion of this paper, draw the picture which shows the overall process of photosynthesis. ��ࡱ� > �� ���� � � � � � � � �������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������� %` ��
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� �� �� �� � $ | �> 4 $ t� T �@ �@ �@ �@ �@ �@ �@ �@ �� �� �� �� �� �� �� $ �� h 0� � � )G �@ �@ )G )G � �@ �@ .� �� �� �� )G � �@ �@ �� �� )G �� �� �� � ˿ � �� �@ �@ 08����� �H �5 �� 8 �� D� 0 t� �� � �� W~ " �� p �� �� �� �@ ( �B � �� zD �E s �@ �@ �@ � � y� 2. Characteristics that parents developed during
their lives were passed to their offspring. 1. North and south (or south and north); the filings between the poles of the two magnets are
attracted, so the poles must be unlike poles. Test the hypothesis with an experiment. Section 4 (page 4)
1. Answers will vary. 1 atom potassium; 1 atom iodine
17. Concept Review (page 62)
1. nucleus (3/1)
2. neutron (3/1)
3. proton (3/1)
4. electron (3/1)
5. electron cloud (3/1)
6. atom (1/1)
7. atom (4/1)
8. cathode rays (1/1)
9. neutron (3/1)
10. equal to (5/2)
11. protons (3/1)
12. subtract the atomic number (6/2)
13. 10% (6/3)
12. line graph�only one variable is a number (8/3)
13. 3 4 7 � � � � 1
4
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d e w x { � � # d g � � � � ��������������������ǻ�����������������ữ����������� #hCo h1t CJ OJ QJ \�^J aJ hCo CJ OJ QJ ^J aJ hg h�*� 5�CJ aJ hg he,� 5�CJ aJ hg h1t 5�CJ aJ h=n CJ OJ QJ ^J aJ h1t 5�CJ OJ QJ \�^J aJ h1t CJ OJ QJ ^J aJ 8� � ! They indicate the number of atoms of a particular element that are in a particular molecule. 1. Companies apply for a patent for a new product or invention. (2/1)
9. 6. Nonliving things such as water, oxygen, and
carbon dioxide are needed by living things to survive. 7. 9. ; X � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � gd�*� gd1t 7$ 8$ H$ gd1t � Thomson
3. It takes one year for Earth to revolve all the way around the Sun. Fossils give proof of preexisting, simpler life
forms and their environment. 1. (be specific) Click on the VIDEO button. Section 2 (page 120)
1. a magnetic field
2. Course Hero is not sponsored or endorsed by any college or university. The elements in the same column of the periodic table (same group, or family) all have the same number of electrons in their outer energy levels. Directed Reading for Content Mastery
Overview (page 121)
1. electric current
2. magnetic field
3. iron bar
4. electromagnet
5. electrons
6. field
7. compass needle
Section 1 (page 122)
1. 13. DNA
4. homologous structures
5. vestigial structures
6. sedimentary rock
7. relative dating and radiometric dating
8. The surface tension
will support the bug and it won�t sink. � a� p� 15. Possible answers include: white with blue lines, flat, thin, 1â2 g, flammable, solid. He showed that a sealed flask of boiled broth
developed no tiny organisms. 7. true
Section 2 (page 100)
1. (1/1)
2. Milky Way
8. spiral
9. astronomical units
Key Terms (page 134)
1. rotation
2. revolution
3. eclipse
4. astronomical unit
5. solar system
6. constellations
7. light-year
8. orbit
9. supernova
10. comet
11. meteorites
Chapter Review
Part A. Possible uses: cleaner, disinfectant, fertilizer,
refrigerant, to freeze-dry foods
7. Concept Review (page 108)
13. �@ �@ �@ t� )G )G )G )G $ $ $ D� h� �U $ $ $ h� $ $ $ ���� Teacher Guide & Answers
Reinforcement
Section 1 (page 1)
1. Second Law of Motion. S
2. Answers will vary, but should mention Earth�s
annual revolution around the Sun, that Earth is
tilted at an angle on its axis in relation to the Sun, and that summer occurs on the part of Earth that is tilted toward the Sun while winter occurs on the part of Earth tilted away from the Sun. � Directed Reading for Content Mastery
Overview (page 103)
1. ! N (north); the filings between the poles of each magnet are repelled, so the poles must be like poles. It will be 10 times greater, or 1,200 V. (5/2)
14. 5/2
8. Photosynthesis Virtual Lab Name_____Period___ 1. Examples will vary. 1,000
5. 3. The two atoms would form an ionic bond,
creating the compound sodium chloride�
ordinary table salt. " " "" 3" 4" 5" C" U" V" W" Z" \" _" a" d" f" i" k" n" p" ����ȼ���������������������z�n����������� hg h�2c 5�CJ aJ hg h�2c 5�OJ QJ ^J hg h+.� CJ OJ QJ ^J aJ h�2c CJ OJ QJ ^J aJ hg hF� 5�CJ aJ h+.� 5�CJ aJ hg h�K� 5�CJ aJ hg h+.� CJ aJ hk There is no definite edge. Site 1: Glencoe Photosynthesis Lab â bit.ly/pholab. Photosynthesis Virtual Lab Site 1: Glencoe Photosynthesis Lab Site: bit.ly/pholab Experiment Question: "Which colors of the light spectrum are most important for plant growth?" T
8. Vocabulary Review (page 35)
Across Down
3. F
Sections 1 (page 40)
1. d
2. c
3. a
4. e
5. b
6. T
2. The atom shown is more like Rutherford�s than like Thomson�s. (3/2)
Reinforcement
Section 1 (page 81)
1. the formation of new substances that have
properties different from those of the original
substance
2. changes in its physical properties, such as its size and shape or its state (solid, liquid, or gas)
3. reactants; products
4. reactants; products; produces
5. a. 1. Concept Review (page 18)
1. 12. Yes, it increases the amount of gas that can be dissolved in a liquid. Photosynthesis Virtual Lab Site 1: Glencoe Photosynthesis Lab "Which colors of the light spectrum are most important for plant growth?" An electric motor converts electric power to
motion. (120 km/h) (1,000 m/1 km) (1 h/60 min)
(1 min/60 s) = 33.3 m/s
12. Some galaxies are elliptical in shape, like a football. Scientists would have difficulty sharing information. The rotation of Earth on its axis causes night
and day. Your answer should be in a complete sentence. Sections 1 (page 68)
1. atomic number
2. element symbol
3. element name
4. atomic mass
5. The half-life of an isotope stays the same. All branches of science are concerned with
materials selection. There might be 100 billion galaxies. 11. Section 3 (page 65)
1. metals
2. magnetic
3. poisonous
4. The poles of the magnetic field would be reversed. 1
5. This preview shows page 1 - 3 out of 4 pages. Join us today and gain access to the #1 collection of browser-based blanks. Possible answers include: red/green/red & blue, cylindrical solid filled with liquid which has a high concentration of gas, 355 mL, pressure increases if shaken
12. Name : Eleena John 9-4 11/29/2020 Photosynthesis Virtual Labs Site 1: Glencoe Photosynthesis Lab Experiment Question: "Which colors of the light spectrum are most important for plant growth?" 2. As the liquid boils, it changes into a gas. Concept Review (page 135)
1. Your foot pushes the ground backward; the
ground pushes your foot forward. (1/1)
3. A scientist works to learn more scientific information and an engineer tries to apply scientific information to solve a problem or human need. 1/1 4. This simulation allows you to manipulate many variables. Excess solute is dissolved in a hot solution. Photosynthesis converts _____ energy into the _____ energy of sugars and other organic compounds. 4�5. T
11. Rutherford�s model had a nucleus; Thomson�s had the electrons imbedded in the positively charged material. (3/1)
15. Use this site to answer questions about photosynthesis. A beta particle is a high-energy electron that
comes from the nucleus rather than the electron
cloud. No
c. Yes
d. No
Section 2 (page 82)
Directed Reading for Content Mastery
Overview (page 83)
1. reactant
2. endothermic
3. heat energy
4. heat energy
5. rate of reaction
6�8. Lanthanides (8/3)
24. actinides (8/3)
25. mercury (7/3)
Reinforcement
Section 1 (page 73)
1. outer energy level
2. electron
3. nucleus
4. electron cloud
5. electron dot diagram
6. element families
7. period
8. atomic structure
9. They are probably close to the nucleus, but may be anywhere. 225 million years
7. Experiment Question: Which colors of the light spectrum are most important for plant growth? Students should draw an �X� through hydrogen. A scientist works to learn more scientific
information and an engineer applies scientific
information to solve a problem or human need. No, radiometric dating does not produce exact results because the original amount of radioactive element in a rock layer is never completely certain. Section 2 (page 128)
Across
3. asteroids
4. smallest
6. rings
8. outer
9. gravity
10. third
11. meteorite
Down
1. solarsystem
2. comet
5. largest
7. sun
12. red
Section 3 (page 129)
1. 8. 4. I u � � � � # The first car pushes against the second; the
second car pushes back, causing it to slow. This action induces an electric current in the coil. a. 6. Answers will vary but should demonstrate an understanding of the need to experiment and examine data and conditions carefully. 1. (1/1)
Down
1. It peels. Possible answers include: yellow, solid, approx 3/4 kg, soft at room temperature
8. Dalton
2. �! Dismiss Chapter 20. Environmental professionals
ensure that the environment is not harmed in the manufacturing process. These isotopes should have short half-lives to avoid damage from radiation. gd1W gd+.� 7$ 8$ H$ gd+.� n q { ~ � � � � � � � � � � R U � � ; = B a b s u x � � � � � � � � �������������������´���������sd h+.� 5�CJ OJ QJ ^J aJ hg h+.� CJ OJ QJ ^J aJ hk Because they vary widely in their chemical composition and structure. 7. 8�12
5. E H R U ] ` g j { ~ � � � � � � � � � � � � � � � � % , 1 2 3 E F I Q T ` ��������������¶�������������|qe����� hg h6n| 5�CJ aJ hg h1t CJ aJ h6n| 6�CJ OJ QJ ]�^J aJ h1t 6�CJ OJ QJ ]�^J aJ hg hF� 5�CJ aJ hg h5 5�CJ aJ hg h What color is the light from the sun? Molecules in a gas have escaped completely
from the attractions of neighboring molecules. 1
5. base
6. Iron (7/3)
13. semiconductor (5/2)
14. noble gases (4/2)
15. metals (3/1)
16. brittle (3/1)
17. malleable (3/1)
18. hydrogen (3/1)
19. fluorine (4/2)
20. lead (4/2)
21. nickel (7/3)
22. higher (7/3)
23. Photosynthesis Virtual Lab. Glencoe natural selection virtual lab worksheet. Cell Homeostasis Virtual Lab What happens to a cell when it is in different environments? It is precise to the nearest hundredth of a
centimeter. Mercury
6. platinum
7. lanthanides
8. lanthanides
9. radioactive
10. synthetic
11. f
12. i
13. g
14. h
15. j
16. a
17. b
18. e
19. c
20. d
Directed Reading for Content Mastery
Overview (page 67)
1. PHOTOSYNTHESIS LAB BENCH VIRTUAL LAB Photosynthesis Virtual Lab Site 1: Glencoe Photosynthesis Lab â bit.ly/pholab Experiment Question: Which colors of the light spectrum are most important for plant growth? First Law of Motion. 12. Trademarks protect words or symbols
that identify brands, goods, or services in the
marketplace. t� CJ aJ h1t CJ OJ QJ ^J aJ h1t 5�CJ OJ QJ \�^J aJ '] g { � � � � � � � % 2 3 F Q ` h o z � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � gdF� gd They allow animals to move from one preserve to another without having to cross roads, farms, or other areas inhabited by humans. Photosynthesis_Simulation.pdf - Photosynthesis Virtual Lab Site 1 Glencoe Photosynthesis Lab Site \u200bbit.ly\/pholab Experiment Question \u200b\"Which colors, 1. 4. true
5. false; Cold slows down reaction rates. Question: YES Photosynthesis Lab: Plant Growth And Light Colors Spinach Avg. Ozone shields living things from some harmful radiation from the Sun. 10. F
10. 7. Site 1: Glencoe Photosynthesis Lab . (5/2)
17. Possible answers include: shaped like a horseshoe, often with the handle portion painted red, attracts steel, solid
10. An electromagnet; the magnetic field would
disappear. The liquid water exerts a buoyant force that holds up the floating ice cubes. 5. Concept Review (page 36)
1. deci- (5/2)
2. The wings push air down and back; air pushes
up and forward. 3. Possible answers include: color, rectangular. He used standardized parts and a production
line to manufacture a product. Photosynthesis Virtual Lab Honors (34 points â GW) Site 1: Glencoe Photosynthesis Lab â bit.ly/pholab For this lab, you will need to type and print your response in the Journal Provided for Questions 1-4. 10. 0.373 kg
9. (5/2)
11. The distances between galaxies are too large to measure in astronomical units so they are
measured in light-years. 8. Move the coil through a magnetic field, or move a magnet into and out of the coil. 4. Our short video lessons are ⦠10 cm is too long. Transition elements (7/3)
10. 5. the poles
6. iron
7. 8. Height Radish Avg. Accuracy (3/1)
5. What is this a mixture of? It
made their eggshells so thin that they would break before the chicks inside were ready to hatch. Electron dot diagrams are very useful because
they show us the number of electrons in the
outer energy levels of an element. The other groups may contain metals, nonmetals, and metalloids. Concept Review (page 87)
1. Postulated that atoms must also contain
positively charged particles that neutralize the
charge of the electrons. H! 2,000
6. one thousandth
7. one
8. international system
9. kilogram
10.
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