Counting Atoms in Chemical Formulas Practice

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances.

Front

How many elements are in C6H12O6?

Back

3

Front

What is the composition of H2SO4?

Back

H = 2, S = 1, O = 4

Front

What is the composition of C3H5(NO3)3?

Back

C = 3, H = 5, N = 3, O = 9

Front

How many Magnesium atoms are in 10MgCl2?

Back

10

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is a molecule?

Back

The smallest unit of a chemical compound that retains its chemical properties.

Front

How do you count atoms in a chemical formula?

Back

Add the subscripts of each element in the formula.

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element present in the molecule.

Front

What is the difference between a molecule and a compound?

Back

All compounds are molecules, but not all molecules are compounds; a molecule can consist of the same type of atoms.