Term
| Physical states of matter |
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Definition
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Term
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Definition
| has mass and occupies volume |
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Term
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Definition
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Term
| 2 categories of changes in properties |
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Definition
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Term
| Physical change of states |
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Definition
Does not alter the chem. makeup of the substance
melting, boiling, freezing, condensing |
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Term
| Chemical Change of states |
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Definition
Alters the chem. structure of a substance
ex. rust, combustion, fruit ripening |
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Term
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Definition
uniform chemical composition
ex. water, sugar |
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Term
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Definition
Variable chem. composition
ex. sugar dissolved in water |
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Term
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Definition
simplest substance
ex H, O |
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Term
| Number of chemical elements identified |
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Definition
117
90 occur naturally
27 artificially made |
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Term
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Definition
17, poor conductors of heat and electricity, 11 are gases at rm temp.
1 liquid - BROMINE |
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Term
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Definition
| 90 metals, solid at rm temp, EXCEPT MERCURY (Hg), left side of periodic table |
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Term
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Definition
7, properties combo of metal + non-metal
ex. silicon - shiny (like metal)
- brittle (non-metal like) |
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