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Matter Unit
| Question | Answer |
|---|---|
| matter | anything that has mass and takes up space |
| mass | how much matter is in an object |
| volume | the amount of space an object takes up |
| solid | a state of matter that has definite shape and volume |
| liquid | a state of matter that has definite volume but does not have definite shape; they take the shape of the container that they are in |
| gas | a state of matter that does not have definite shape or volume;they take the shape and size of the container that they are in |
| property | observable and measurable characteristic of matter |
| melting | changing a solid into a liquid by adding heat |
| freezing | changing a liquid into a solid by removing heat |
| evaporation | slowly changing a liquid into a gas |
| boiling | quickly changing a liquid into a gas by adding heat(100 degrees Celcius or 212 degrees Fahrenheit) |
| condensation | changing a gas into a liquid by removing heat |
| conductors | materials that allow heat to move easily through them and from one object to another object |
| insulators | materials that do not allow heat to move through them easily |
| metal | conductor |
| wood, cloth, plastic | insulator |
| heat source | sources of heat that produce heat energy and make things warmer |
| rubbing | heat is produced when objects are rubbed together |
| burning | heat can be produced when objects are lit on fire |
| using electricity | objects that use electricity get warmer(producing heat) |
| observable properties | characteristics of objects that are identified by using the five senses(sight,etc.) |
| measurable properties | characteristics of objects that are identified by using tools(ruler,etc.) |
| solid molecules | molecules are close together |
| liquid molecules | molecules have small spaces in between |
| gas molecules | molecules are far apart |