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03 Science 5
Matter
| Question | Answer |
|---|---|
| mass | -amount of material in a substance -measured with a balance |
| matter | -anything that has mass and volume -three states: gas, liquid, solid |
| solid | -has a definite volume and a definite shape |
| gas | -has no definite volume and no definite shape |
| melting | -changing a solid into a liquid |
| freezing | -changing a liquid into a solid |
| volume | -amount of space an object or a substance takes up |
| condensation | -changing gas into liquid |
| vaporization | -changing liquid to gas |
| atoms | -small particles that make up all matter |
| chemical change | -when atoms from two or more elements or compounds combine to form a new substance -digesting food -burning wood in fireplace |
| compound | -new substance formed by combining atoms of different elements -every molecule of a compound is chemically identical |
| physical change | -a change in matter that does not form a new substance -cutting a piece of paper with scissors -heating a marshmallow over a fire |
| mixture | -two or more substances that are physically combined -particles are dissolved or spread evenly throughout a mixture |
| solvent | - substance that dissolves another substance water |
| solute | -substance that is dissolved |
| solubility | -ability of a solvent to dissolve a certain amount of a solute |
| concentration | -amount of solute that is dissolved in the solvent |
| graduated container | -used to measure the volume of a liquid |
| water displacement | -can be used to find the volume of solids |
| density | -measures the amount of matter in a certain volume |
| liquid | -has a definite volume but not a definite shape |
| physical property | -characteristic of a substance that can be observed without changing the identity of the substance |
| solution | -a mixture in which all the substances are spread evenly throughout |
| element | -matter made up of only one kind of atom |
| molecule | -formed when an atom joins with another atom |
| How is weight different from mass? | -Mass measures the amount of matter, but weight measures the amount of force gravity exert on the matter. |
| When does evaporation happen? | -when a substance changes from a liquid to a gas at a temperature below its boiling point |
| How is physical change different from a chemical change? | -A physical change does not form a new substance, but a chemical change does. |
Created by:
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