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| anything that has mass and takes up space |
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1. Pure - fixed composition ex. water, elements
2. mixture - non fixed substance ex. sea water, beer. |
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| cannot distenguish difference/uniform mixture. ex. beer, salt water, bronze |
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| Not uniform mixture. ex. water/oil, oreo, cake mix |
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| 2 different elements/atoms combine chemically |
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1.2 same atoms (diatomic molecules), multiple same atoms (polytoimic)
2. 2 atoms aggregate together |
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H2-Hydrogen
N2-Nitrogen
O2-Oxygen
F2-Florine
Cl2-Chlorine
B2-Borine
I2-Iodine |
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