Term
| everything in the universe is made up of |
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Definition
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Term
measure of amount of matter in substance
*NOT equal to weight |
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| the pull of gravity on an object |
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| name the 4 states of matter |
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Definition
- Solids
- Liquids
- Gases
- Plasmas
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Term
| have definite volume and definite shape |
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| have definite volume but no definite shape |
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| no definite volume or shape but takes volume and shape of container |
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| no definite volume, no definite shape, only exists at high temp |
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| pure substances which cannot be broken down into simplar kinds of matter |
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Term
| which four elements make up 96% of the mass of most organisms |
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Definition
- oxygen
- carbon
- nitrogen
- hydrogen
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Term
| elements in the same horizontal period have |
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Definition
| the same number of energy levels |
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Term
| elements in the same vertical family have |
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Definition
| the same number of electrons in their outermost energy level |
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Term
| the smallest part of an element that retains its chemical properties |
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Definition
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Term
| 3 kinds of subatomic particles that atoms consist of |
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Definition
- Electrons
- Protons
- Nuetrons
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high energy particles with little mass
energy levels exist around nucleus and hold certain number of... |
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Term
| most elements combine with other elements to form a |
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Term
| made up of two or more elements, chemically combined |
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Term
| occurs when unstable atoms (outer energy shell is not filled) combine to from more stable compounds |
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Term
reactants are always on the
side |
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products are always on the
side |
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Term
| form between atoms whenever the share one or more pairs of electrons |
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Term
| forms between atoms whenever they transfer electrons; occurs between a positively and negatively charged atom or ion |
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