Counting Atoms Practice

Front

What is the total number of atoms in a molecule of N₂?

Back

2

Front

In the formula 4 NaCl, how many atoms of chlorine are present?

Back

4

Front

How many elements are present in hydrochloric acid (HCl)?

Back

2

Front

In the formula 4 NaCl, how many different elements are there?

Back

2

Front

How many elements are in the compound N₂O?

Back

2

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What is a chemical formula?

Back

A representation of a substance using symbols for its constituent elements and numbers to indicate the ratio of atoms.

Front

How many total atoms are in the molecule C₆H₁₂O₆ (glucose)?

Back

24

Front

What is the significance of coefficients in a chemical formula?

Back

Coefficients indicate the number of molecules or moles of a substance.