Question: Compound

Answer: A pure substance that is composed of two or more atoms combined in a specific way

Question: Atom

Answer: The smallest particle of any element that retains properties of the element

Question: Element

Answer: A pure substance that cannot be chemically broken down into simpler substances

Question: Chemical changes

Answer: Changes in the ways the atoms and molecules in a pure substance are arranged and interconnected

Question: Subatomic Particles

Answer: The particles that make up an atom

Question: Protons

Answer: Subatomic particles that have a 1+ (positive) electric charge

Question: Neutrons

Answer: Subatomic particles that do not have an electric charge

Question: Electrons

Answer: Subatomic particles that have a 1- (negative) electric charge

Question: Nucleus

Answer: The center of each atom

Question: Nuclear charge

Answer: The term given to the electric charge on the nucleus, and is simply found by counting the number of protons