Question

unit 3: the atom

answer	definition	word bank
	a neutral (no charge) particle located in the nucleus of an atom	atomic number
	the center of an atom that is made up of two subatomic particles.	compound
	the number of protons in the nucleus of an atom; gives the atom its identity	electron
	a molecule made up of two or more types of atoms bonded together; has a fixed composition	element
	the basic building block of all matter.	mass number
	a positively charged particle located in the nucleus of an atom.	matter
	calculated by adding the number of protons and number of neutrons of an atom.	neutron
	a negatively charged particle located outside of the nucleus of an atom.	nucleus
	a pure substance that cannot be decomposed into new kinds of matter.	proton

Explanation:

Match each definition to the correct term from the word bank by identifying the key traits in each definition (e.g., charge, location, composition, or core function of the particle/substance).

Answer:

Answer	Definition
Neutron	A neutral (no charge) particle located in the nucleus of an atom.
Nucleus	The center of an atom that is made up of two subatomic particles.
Atomic Number	The number of protons in the nucleus of an atom; gives the atom its identity
Compound	A molecule made up of two or more types of atoms bonded together; has a fixed composition
Atom	The basic building block of all matter.
Proton	A positively charged particle located in the nucleus of an atom.
Mass Number	Calculated by adding the number of protons and number of neutrons of an atom.
Electron	A negatively charged particle located outside of the nucleus of an atom.
Element	A pure substance that cannot be decomposed into new kinds of matter.