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16 Cards in this Set
- Front
- Back
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BUOYANCY
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upward force of water, another liquid, or air that keeps things afloat
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MATTER
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is anything that takes up space
matter has mass and properties that you can see and describe can exist as a solid, liquid, or gas |
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METRIC SYSTEM
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based on units of 10
used by most other countries used by all scientists |
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WEIGHT
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is the measure of the pull of gravity between an object and earth
measured using a scale or balance metric unit is the newton |
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DENSITY
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amount of matter in a given space
it describes how tightly packed matter is. |
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ELEMENT
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is a substance made up of only one type of matter.
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FILTER
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a tool used to separate things by size
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EVAPORATION
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the change of a liquid to a gas
example: puddle of water disappears |
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COMPOUND
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a substance made when 2 or more elements are joined, each loosing its own properties
example: oxygen + iron = rust |
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PROPERTIES
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a characteristic of something that you can observe
examples: color, texture, shape, buoyancy |
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INSULATOR
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a material that does not transfer heat
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HEAT
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the movement of energy from one material to another
always moves from hotter to colder objects |
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WORK
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to apply a force that makes an object move
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FORCE
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The push or pull needed to make an object move
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CHEMICAL CHANGE
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a change that produces new matter with different properties from the original matter
1) can make a new substance (carbon, oxygen, hydrogen combined to make sugar) 2) can break compounds apart into elements |
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PHYSICAL CHANGE
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a change that begins and ends with the same type of matter
1) change in size or shape (cut, fold, stretch) 2) change in position or texture (crumpling, moving, rearrange) 3) change in state (heating, freezing, melting) |
