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Grade 5 Science
Chapter 1 States of Matter
| Term | Definition |
|---|---|
| Atom | the smallest part of an element that still has the properties of that element |
| Atomic theory | the idea that everything is made up of small particles |
| compound | a type of matter made up of two or more elements |
| molecule | the smallest particle of a compound that still has the properties of that compound |
| matter | anything that has mass or takes up space |
| element | ingredient that makes up all other substances |
| metal | element that is a good conductor of electricity and heat |
| nonmetal | element that does not conduct electricity or heat |
| semimetal | element that is sometimes like metal and sometimes like nonmetal |
| calcium | a metal for strong bones |
| mercury | a liquid metal |
| sulfur | a solid nonmetal |
| Chlorine | a poisonous gas |
| sodium | a soft metal |
| mass | the amount of matter into other a solid, liquid, or gas |
| volume | the amount of space and object takes up |
| temperature | a measure of how fast the particles in an object are moving |
| color | a physical property of matter |
| texture | the surface structure you can feel by touching |
| solid | a substance that has a definite shape and volume |
| liquid | a substance that has a definite volume but no shape |
| gas | a substance without a definite volume or shape |
| plasma | a state of matter that has electric charges at very high temperatures |
| freezing point | temperature at which a liquid becomes a solid |
| melting point | temperature at which a solid becomes a liquid |
| evaporation | the changing of a liquid to a gas |
| condensation | the process in which a gas turns into a liquid |
| mixture | different materials placed together, but each material keeps its own properties |
| solution | a mixture in which substances are spread out evenly and will not settle |
| solubility | a material’s ability to dissolve in water |
| physical change | a change in some properties of matter without forming a different kind of matter |
| chemical change | a change of one or more types of matter into other types of matter with different properties |
| solid, liquid, gas | states of matter |