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27 Cards in this Set
- Front
- Back
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solid |
vibrates |
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liquid |
rolls takes shape n volume of container cant compress |
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gas |
moves freely takes shape n volume of container can compress |
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plasma |
higher temp than gas |
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bose-einstein condensate |
almost no movement near 0 K rubidium atoms |
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physical change |
observe without changing |
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chemical change |
u have 2 change 2 observe |
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extensive changes |
mass volume n space weight=force=mass x acceleration(gravity) length |
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instensive changes |
density melting n boiling point color hardness odor texture luster ability to bend ductility (be made into wires) viscosity solubility conductivity |
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chemical properties |
reaction w acids " bases (alkalis) " oxygen (combustion) ability to act as a oxidizing n reducing agent reaction w other elements corrosion |
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changing states |
energy changes the state phase change physical change |
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evaporation |
only molecules on top turn to gas not the same as boiling |
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condensation |
water vapour contacts a material w low temp gas turns to liquid vapour is not the same as gas can be liquid and solid |
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freezing |
remove energy from substance low temperature |
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melting |
reverse of freezing |
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sublimation |
solid turning directly to gas ex. dry ice |
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deposition |
gas turning to solid directly |
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endothermic reaction |
process absorbs heat from the surroundings ex. ice+heat= liquid |
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exothermic reaction |
process releases heat to the surroundings ex. burning/ explosions |
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pure substance |
cannot be separated by physical means |
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mixture |
combination of pure substances but can be physically separated |
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compound |
cannot be broken down more than one element |
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element |
can be broken down by chemical methods only 1 kind of atom |
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homogeneous |
same composition and properties 1 phase of matter |
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heterogenous |
not the same more than 1 phase |
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3 kinds of elements |
metal, non-metal, metalloid |
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3 kinds of compounds |
acid-have hydrogen and are non metal (mostly gases) base-all bases have hydroxide and are metal (high melt and boil point) salt- metal and non-metal |
