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Unit One
Physical Properties of Matter
| Term | Definition |
|---|---|
| dense | a substance that has more matter is more dense a substance that has less matter is less dense |
| relative density | floating or sinking when compared to water |
| solubility | the ability of a substance to dissolve in another substance, such as sugar dissolving in water |
| soluble | able to dissolve in water |
| physical state | The classification of matter as a solid, liquid, or gas |
| conductor | a substance or object that allows electrical or thermal energy to flow through it easily |
| dissolve | solid breaks down in water and forms a solution |
| electric energy | energy that is absorbed or delivered by an electric circuit |
| electricity | a form of energy resulting from the existence of charged particles |
| insulator | a substance or object that does not allow electrical or thermal energy to flow through it easily |
| magnetism | an attracting or repelling force that causes a magnetic material to move. Pushing or pulling force |
| mass | the amount of matter in something: measured in grams |
| matter | anything that has mass and takes up space |
| substance | particular kind of matter |
| thermal energy | Energy that causes a transfer of heat between materials |
| volume | The amount of space matter takes up; measured in liters (L), cubic centimeters (cm3 ), or milliliters (mL) |
| states of matter | the forms matter can take, such as solid, liquid, and gas; sometimes called phases of matter |
| water vapor | gas form of water |
| condensation | vapor air (gas) turning into a liquid |
| cooling | removing heat and decreasing temperature |
| evaporation | adding heat and changing water (liquid) to water vapor (gas). |
| heating | adding heating and increasing temperature |
| mixture | a combination of two or more substances that can be easily separated in some physical way |
| physical property | properties of matter that can be observed, measured, or changed without changing the matter itself. For example, color, melting point, and conductivity |
| solution | a type of mixture in which the particles of one or more substances are dissolved (uniformly dispersed throughout) in another substance |
| dissolving | the process of forming a mixture of a substance broken down into small pieces and spread evenly throughout a liquid (water) |
| solid | a state of matter in which the substance has a set shape and size |
| liquid | a state of matter in which the substance takes the shape of the container and has an unchanged volume when poured from one container to another |
| gas | a state of matter in which the substance expands to take both the shape and the volume of its container |
| melting | the process of changing a substance from a solid to a liquid by adding thermal energy |
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Brown5
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