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28 Cards in this Set
- Front
- Back
What is Physical Science? |
Physical science are the branches of natural sciences that study: -the nature -properties of energy -non-living matter |
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What is Matter? |
Matter is anything that has volume and mass. |
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States of Matter |
Solids, Liquids, and gases |
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Solids |
Solids, like your desk, your backpack and your pants, are firm and stable. Their molecules are grouped together in organized patterns. The molecules might vibrate slightly, but they don’t move around. |
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Liquids |
Liquids, like water, oil and soda, shift to fit inside the container they’re in. If you look at them under a microscope, you’ll see that they have particles that are close together, but have no rhyme or reason. The molecules move around. |
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Gases |
Gases, including air, steam and helium, are free-flowing. You can easily put your hand through them. Gases shift to fit their container and can even fill it. Their molecules are spaced far apart and wiggle and jiggle. *Vapor and gas mean the same thing. |
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Sublimation |
Transition from a solid to a gas phase without becoming a liquid. EX: a block of dry ice (CO2) which will turn into a gas at room temperature. |
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Desposition |
Transition from a gas to a solid without becoming a liquid. EX: Some gases can transition directly to a solid, such as the formation of frost. |
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Fusion/Melting |
Solid to Liquid |
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Freezing |
Liquid to Solid |
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Condensation |
Gas to Liquid |
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Vaporization |
Liquid to Gas |
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Mass |
Mass is the amount of a matter in an object. (weight) Example: - Elephant = a lot of matter = LARGE mass - Paper clip = a small amount of matter = SMALL mass |
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Density |
Describes the mass of an
D = mass/volume |
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Hardness |
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Mohs' Scale of Hardness |
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Physical properties |
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Physical changes |
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Chemical changes |
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Atoms |
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Nucleus |
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Protons |
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Neutrons |
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Electrons |
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Electron Clouds |
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Chemical elements |
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Compounds |
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