Term
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Definition
| Anything that has mass and takes up space (the “stuff” that everything is made up of) |
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Term
| Matter has properties. Give examples of properties. |
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Definition
Hardness
color
texture
density
shape
boiling point/freezing point
flammability, etc. |
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Term
| Matter has phases. Name the 3 states (phases) of matter. |
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Definition
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Term
| What is a characteristic property and why is it useful? |
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Definition
A characteristic property is a property that NEVER changes for a substance.
It is useful because it can help you identify an unknown substance. |
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Term
| Name two characteristic properties of water and define them. |
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Definition
Boiling point-the temperature at which a liquid boils (or turns to a gas)
Melting point-the temperature at which a solid melts (or turns to liquid) |
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Term
| Define "physical change." |
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Definition
| a change that changes the way a substance looks BUT does NOT create a new substance |
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Term
| Give examples of physical changes. |
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Definition
cutting, ripping, crumbling, mixing
ALSO, all phase changes are physical changes |
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Term
| Define "chemical change." |
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Definition
| a change that causes a new substance to form |
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Term
| Give examples of chemical changes. |
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Definition
| burning something, cooking,heating table sugar changes it into caramel |
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Term
| Matter can be classified into 2 main categories. What are they? |
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Definition
| Mixtures and pure substances |
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Term
| There are 2 main types of pure substances. What are they? |
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Definition
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Term
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Definition
| 2 or more SUBSTANCES that are mixed together but NOT chemically combined |
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Term
| Give some examples of mixtures. |
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Definition
| Pennies and dimes OR a salad |
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Term
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Definition
| a pure substance that CANNOT be broken down into any other substance |
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Term
| Give examples of elements. |
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Definition
hydrogen (H), oxygen (O), sodium (Na), chloride (Cl)
(All elements are listed on the periodic table). |
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Term
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Definition
2 or more elements chemically combined
Element + element = compound |
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Term
| Give examples of compounds. |
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Definition
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