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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. |