Counting Atoms Practice

Front

How many elements are in Mg(NO₃)₂?

Back

3

Front

What does it mean if there is no subscript following the element symbol?

Back

It means there is only 1 atom of that element.

Front

How many Sodium (Na) atoms are in Na₂CO₃?

Back

2

Front

How many Sodium (Na) atoms are in 6NaCl?

Back

6

Front

How many Hydrogen atoms are in 4H₂O?

Back

8

Front

What is the subscript in a chemical formula?

Back

A number written below and to the right of an element symbol indicating the number of atoms of that element.

Front

What does a coefficient in a chemical formula indicate?

Back

The number of molecules or formula units of the compound.

Front

How do you determine the total number of atoms in a compound?

Back

Add the number of atoms of each element, considering their subscripts.

Front

What is the formula for calculating the number of atoms in a compound?

Back

Number of atoms = Coefficient × (Sum of subscripts of each element)

Front

In the compound C₆H₁₂O₆, how many Carbon (C) atoms are there?

Back

6