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Chapter 3

Properties of matter

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.
Created by: Liam-Calhan