 |  Matter 82 Flashcards |  Start |
 | 1 / 82 What is matter?
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| 2 / 82 Matter is anything that takes up space and has weight.
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| 3 / 82 Which of the following is a characteristic of gases? A) Fixed shape B) Fixed volume C) Can flow D) Rigid
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| 4 / 82 C) Can flow
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| 5 / 82 Riddle: I am the state of matter that can flow and take the shape of my container. What am I?
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| 6 / 82 Liquid
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| 7 / 82 True or False: Molecules in a solid are free to move around.
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| 8 / 82 False. Molecules in a solid can only vibrate in their fixed positions.
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| 9 / 82 The space between molecules in solids is called ______.
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| 10 / 82 Inter-molecular space
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| 11 / 82 What type of molecule is formed by two atoms?
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| 12 / 82 Diatomic molecule
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| 13 / 82 Which state of matter has the least inter-molecular space?
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| 14 / 82 Solid
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| 15 / 82 True or False: The kinetic energy of molecules is highest in solids.
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| 16 / 82 False. The kinetic energy of molecules is highest in gases.
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| 17 / 82 Fill in the blank: The process of a solid turning into a liquid is called ______.
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| 18 / 82 Melting
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| 19 / 82 What is the term for the force that holds molecules together?
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| 20 / 82 Inter-molecular force
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| 21 / 82 Which of the following has a fixed volume but no fixed shape? A) Solid B) Liquid C) Gas D) All of the above
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| 22 / 82 B) Liquid
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| 23 / 82 Riddle: I am a process when a liquid turns into gas at a fixed temperature. What am I?
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| 24 / 82 Boiling
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| 25 / 82 True or False: Evaporation occurs only at the boiling point of a liquid.
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| 26 / 82 False. Evaporation occurs at all temperatures.
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| 27 / 82 Fill in the blank: The temperature at which a solid turns into a liquid is called the ______.
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| 28 / 82 Melting point
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| 29 / 82 What happens to the kinetic energy of molecules during melting?
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| 30 / 82 The kinetic energy increases as the solid absorbs heat.
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| 31 / 82 What is the primary reason solids have a definite shape?
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| 32 / 82 Strong inter-molecular forces keep the molecules in fixed positions.
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| 33 / 82 Which state of matter expands to fill its container?
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| 34 / 82 Gas
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| 35 / 82 Riddle: I can turn from a solid directly to a gas without becoming a liquid first. What am I?
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| 36 / 82 Sublimation
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| 37 / 82 True or False: The boiling point and condensation point of a substance are always the same.
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| 38 / 82 True.
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| 39 / 82 The heat absorbed during melting is known as ______.
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| 40 / 82 Latent heat of fusion
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| 41 / 82 What is the effect of humidity on the rate of evaporation?
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| 42 / 82 Higher humidity slows down the rate of evaporation.
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| 43 / 82 Which state of matter has molecules that can slide over each other?
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| 44 / 82 Liquid
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| 45 / 82 Fill in the blank: When a gas cools and turns directly into a solid, this process is known as ______.
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| 46 / 82 Deposition
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| 47 / 82 What happens during vaporization?
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| 48 / 82 A liquid turns into a gas by absorbing heat.
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| 49 / 82 Which of the following is an example of a polyatomic molecule? A) O₂ B) H₂O C) He D) N₂
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| 50 / 82 B) H₂O
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| 51 / 82 Riddle: I am a process when heat is removed from a gas, and it turns back into a liquid. What am I?
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| 52 / 82 Condensation
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| 53 / 82 True or False: Molecules in gases are closely packed together.
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| 54 / 82 False. Molecules in gases are far apart.
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| 55 / 82 What is the kinetic energy of molecules like in liquids compared to solids?
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| 56 / 82 In liquids, the kinetic energy is higher than in solids.
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| 57 / 82 Fill in the blank: The force of attraction between molecules of the same substance is called ______.
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| 58 / 82 Cohesion
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| 59 / 82 What is the term for the process of a solid changing directly into a gas?
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| 60 / 82 Sublimation
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| 61 / 82 Which state of matter has the highest kinetic energy?
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| 62 / 82 Gas
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| 63 / 82 Riddle: I am a slow process of a liquid turning into gas, happening at any temperature. What am I?
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| 64 / 82 Evaporation
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| 65 / 82 True or False: The boiling point of a liquid decreases with the addition of impurities.
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| 66 / 82 True.
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| 67 / 82 The process of a liquid turning into gas at a fixed temperature is called ______.
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| 68 / 82 Boiling
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| 69 / 82 What is the primary reason why solids do not flow?
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| 70 / 82 Strong inter-molecular forces prevent movement.
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| 71 / 82 Fill in the blank: The amount of heat required to convert a liquid into vapor at its boiling point is called ______.
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| 72 / 82 Latent heat of vaporization
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| 73 / 82 What is the term used for the process of a solid turning into a liquid?
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| 74 / 82 Melting
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| 75 / 82 True or False: Gases have a fixed shape and volume.
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| 76 / 82 False. Gases do not have a fixed shape or a fixed volume.
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| 77 / 82 Riddle: I am a state of matter that takes the shape of my container but has a fixed volume. What am I?
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| 78 / 82 Liquid
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| 79 / 82 The space between molecules in solids is very small, while in gases it is ______.
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| 80 / 82 The largest
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| 81 / 82 Which of the following has the strongest intermolecular force? A) Gas B) Liquid C) Solid D) None of the above
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| 82 / 82 C) Solid
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