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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 |