Atoms, Elements, Molecules, Compounds and Chemical Formulas

Front

What is the smallest unit of matter?

Back

Atom

Front

What do we call any combination of two or more atoms that are chemically combined?

Back

Molecule

Front

What is formed when two or more atoms are bonded together?

Back

Molecule

Front

How many atoms of lead (Pb) are in Pb(NO₃)₂?

Back

1

Front

How many different elements are in N₂O?

Back

2

Front

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

Back

Element

Front

What is a substance made of two or more different elements that are chemically combined?

Back

Compound

Front

What is the chemical formula for water?

Back

H₂O

Front

What is the term for a group of atoms bonded together that represents the smallest unit of a compound?

Back

Molecule

Front

What is the difference between an element and a compound?

Back

An element is made of one type of atom, while a compound is made of two or more different types of atoms chemically combined.