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chapter 3
| Term | Definition |
|---|---|
| matter | everything that has mass and takes up space |
| element | the ingredients that makes up all the substances on earth, and can't be broken down into other substances |
| metals | god conductors of electricity and heat,and can bend without breaking; also are almost always a gray color |
| nonmetals | do not conduct heat and electricity very well and may be gas or solid |
| semimetals | sometimes metals and sometimes nonmetals |
| atom | the smallest part of an element that still acts like an element |
| atomic theory | states that everything is made of atoms |
| compound | a type of matter made of 2 or more elements |
| molecule | smallest particle of an element that still acts like a compound |
| protons | have a positive charge (in the nucleus) |
| neutrons | no charge/neutral charge (in the nucleus) |
| electrons | negative charge (orbits the nucleus(the inside of the atom) |
| solid | Has a definite shape and volume. Particles are very close together, and don’t move past each other. Keeps shape |
| liquid | Definite volume but not shape, particles can move past each other. Takes shape of container |
| gas | No definite volume or shape. Particles spread out evenly and take shape of container. Can be squeezed into smaller volume |
| melting point | When solid to liquid or liquid to solid. Same temp as freezing point. |
| evaporation | When liquids become a gas. |
| Condensation | When gas become a liquid. Gas particles touch a cold surface and the temperature drops |
Created by:
mia-brake
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