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chapter 3

TermDefinition
Matter Everything that has mass and takes up space.
Element. The ingredients that make up all other substances. Cant 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. 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 a compound.
Proton. Positive charge. Found in the nucleus.
Neutron. No charge. Found in the nucleus.
Electron. Negative charge. Orbits the nucleus.
Solid. Has a definite shape and volume. Particles are very close together, and don't move past each other. keeps shape.
Liquid. Definite volume but not shape, particles can move past each other. Takes shape of container.
Gas. No definite volume or shape. Particles spread out evenly.
Created by: paige-ridings
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