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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 the 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 atoms. |
| molecule | smallest particle of a compound that still acts like that compound. |
| proton | Positive charge. Found in the nucleus. |
| Nuetron | No charge. Found in the nucleus. |
| Electrons | Negative charge. Orbits the nucleus. |