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 |