Atoms, Elements, and Compounds

Front

What is the central region of an atom made up of protons and neutrons called?

Back

Nucleus

Front

What is a horizontal row of elements in the periodic table called?

Back

Period

Front

What is a substance particle that has no charge and is located in the nucleus of an atom?

Back

Neutron

Front

What is a substance made up of two or more different elements joined by chemical bonds called?

Back

Compound

Front

What is the weighted average of the masses of all naturally occurring isotopes of an element?

Back

Average atomic mass

Front

What is the smallest unit of an element that retains the properties of that element?

Back

Atom

Front

What is a vertical column of elements in the periodic table called?

Back

Group

Front

What is the positively charged particle found in the nucleus of an atom?

Back

Proton

Front

What is the term for a pure substance made of only one type of atom?

Back

Element

Front

What is the term for the number of protons in the nucleus of an atom?

Back

Atomic number