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