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55 Cards in this Set
- Front
- Back
salt water |
solution |
|
snow globe |
suspension |
|
shaving cream |
colloid |
|
mixture with a solvent and a solute |
solution |
|
particles can be seen |
suspension |
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particles do not settle |
solution, colloid |
|
may contain water |
solution, suspension |
|
particles are easily seperated |
suspension |
|
properties are not the same throughout |
colloid, suspension |
|
particles are too small to see with the human eye |
solution |
|
properties are the same throughout |
solution |
|
what goes on the x-axis in a solubility graph |
temperature |
|
what goes on the y-axis in a solubility graph |
solubility |
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what do the amounts on the line of a solubility graph represent |
saturated solutions |
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what do the amounts below the line of a solubility graph represent |
unsaturated solutions |
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what do the amounts above the line of a solubility graph represent |
supersaturated solutions |
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when there is too much solvent in a solution, it is.. |
dilute |
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when there is not enough solvent and too much solute in a solution, it is... |
concentrated |
|
what type of thermic reaction absorbs energy |
endothermic |
|
what type of thermic reaction releases energy, usually in the form of heat |
exothermic |
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what is the law of conservation of mass |
no matter is created nor destroyed in a chemical or physical change |
|
what is activation energy |
the minimum amount of energy needed to start a chemical reaction |
|
what five factors can effect the reaction rates |
surface area, temperature, concentration, presence of catalysts, presence of inhibitors |
|
what is a chemical equation |
a way to show a chemical reaction, using symbols instead of words |
|
what is the structure of a chemical equation |
reactant + reactant (arrow) product + product |
|
a number placed in front of a chemical formula in an equation |
coefficient |
|
a single kind of matter that has a specific makeup, or composition |
pure substance |
|
two or more substances that are together in the same place, but their atoms are not chemically bonded |
mixture |
|
what are two types of mixtures |
heterogeneous, homogeneous |
|
a mixture in which you can see the different parts and can easily separate them |
heterogeneous mixture |
|
so evenly mixed that you can't differentiate the parts simply by looking at the mixture |
homogeneous mixture |
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solids can be separated from liquids by pouring the mixture through a filter |
filtration |
|
iron objects can be separated from a mixture using a magnet |
magnetic attraction |
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liquids can be separated from each other by heating them up to the temperature at which one of the liquids boils. The liquids boils into a gas. Then the gas cools, forming the separated liquid. |
distillation |
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when left in the open air, liquid solutions can change to gas, leaving solid components behind |
evaportion |
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part of a solution usually present in the largest amount. it dissolves the other substance |
solvent |
|
substance that is dissolved by the solvent |
solute |
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what is the universal solvent |
water |
|
a mixture containing small, undissolved particles that do not settle out |
colloid |
|
mixture in which particles can be seen and easily separated by settling or filtration |
suspension |
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factors that affects the solubility of a substance |
pressure, type of solvent, temperature |
|
any change that alters the form or appearance of a substance but does not change into another substance |
physical change |
|
a change in matter that produces one or more new substances |
chemical change |
|
substances that undergo the chemical change |
reactants |
|
new substances that form |
products |
|
a solid that forms from liquids during a chemical reaction |
precipitate |
|
amount of a substance in a given volume |
concentration |
|
increases the reaction rate by lowering the activation energy needed |
catalyst |
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cell in your body contain thousands of biological catalysts called.. |
enzymes |
|
a material used to decrease the rate of a chemical reaction |
inhibitor |
|
arrow that goes one way |
means reaction is one way (goes forward) |
|
arrow that goes both ways |
means reaction is reversible (can go forward and backward) |
|
surface area affects a chemical reaction by.. |
the more particles exposed to the surface, the faster the reaction occurs |
|
temperature affects a chemical reaction by.. |
higher temperatures make particles move faster so they have a better chance of coming into contact with each other quicker. lower temperatures make particles slow down, lowering the chances of them coming into contact quicker. |
|
concentration affects a chemical reaction by.. |
increasing/ decreasing the concentration reactants supplies/lowers the supply of particles to react. |