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Chapter 3
Properties of Matter
| Term | Definition |
|---|---|
| Matter | Everything that has mass and takes up space |
| Element | the ingredients that make up all other substances. Can't be broken down into other substances. |
| Metals | good conductors of electricity and heat. Can bend without breaking. Most have a gray color |
| Nonmetals | do not conduct heat / electricity very well. May be a gas or a solid |
| Semi-metals (metalloid) | sometimes like metals and sometimes like nonmetals |
| Atom | the smallest part of an element that still acts like that element |
| Atomic Theory | states that everything is made of atoms |
| compound | a type of matter made of two or more elements |
| molecule | smallest particle of a compound that still acts like that compound |
| Proton | positive charge. Found in the nucleus |
| Neutron | No charge. Found in the nucleus |
| Electron | negative charge. Orbits the nucleus |