Counting Atoms

Front

What is the chemical formula for hydrogen fluoride?

Back

HF

Front

How many atoms of oxygen are in 3Fe₂O₃?

Back

9

Front

What is the chemical formula for carbon tetraiodide?

Back

CI₄

Front

What is a short, easy way to show a chemical reaction using symbols?

Back

Chemical equation

Front

How many atoms of hydrogen are in the compound H₂O₂?

Back

4

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules are involved.

Front

What is the law of conservation of mass?

Back

Matter cannot be created or destroyed in a chemical reaction.

Front

How many total atoms are in the molecule C₆H₁₂O₆?

Back

24

Front

What is the difference between an element and a compound?

Back

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