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20 Cards in this Set
- Front
- Back
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What is matter?
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Anything that takes up space and has mass.
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What does the particle theory state?
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1.All matter is made up of tiny particles.
2.Particles have empty spaces between them. 3.Even though you cannot see them, particles are moving all the time. 4.Particles move faster and spread farther apart when heated. 5.Particles are attracted to eachother, so they tend to stay together, not fly apart. |
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What is a pure substance?
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A pure substance has only one type of particle. They are extremely rare in nature.
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What is a mechanical mixture?
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A mechanical mixture is made up of two or more pure substances.
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What is another name for a mechanical mixture.
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Heterogeneous.
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What is a solution?
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A mixture that the particles of the substances mix so completely that the mixture appears uniform.
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What is the independent variable?
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The independent variable is the variable that is changed.
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What is the dependent variable?
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The dependent variable is the effect variable. This is the variable that you measure to see how it was affected by the independent variable.
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What is a drink crystal combined with?
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Flavour particles, sugar particles, and colour particles.
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What is a concentrated solution?
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A concentrated solution has a large amount of solute in a volume of solvent.
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What is a dilute solution?
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A dilute solution has a small amount of solute in a volume of solvent.
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What is concentration?
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The amount of solute present in a solution.
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What is a saturated solution?
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A saturated solution is a solution where no more solute is able to dissolve.
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What is an unsaturated solution?
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An unsaturated solution is a solution where more solute is still able to dissolve.
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what is the formula for concentration?
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The formula for concentration is=
Mass of solute in grams _______________________ 100mL of solution |
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What does soluble mean?
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soluble means able to dissolve in a specified solvent.
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What does insoluble mean?
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Insoluble means unable to dissolve in a specified solvent.
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What is solubility?
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Solubility is a measure of how much solute can dissolve in a certain solvent to form a saturated solution at a specific temperature and volume.
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What is the formula for solubility?
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Solubility=
maximum mass of solute (g) __________________________ 100mL of solvent at a certain temperature |
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Why is water called the universal solvent?
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Water is called the universal solvent because it can dissolve more solutes than any other solvent.
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