Counting Atoms - Subscripts

Front

What does a subscript in a chemical formula indicate?

Back

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

Front

What is the chemical formula for a compound containing 1 atom of nickel and 2 atoms of fluorine?

Back

NiF₂

Front

How many atoms of nitrogen are in the molecule N₂O?

Back

2

Front

What does it mean if there is no subscript following an element symbol in a chemical formula?

Back

It indicates that there is only 1 atom of that element.

Front

How many different elements are present in the formula C₆H₁₂O₆?

Back

3 (Carbon, Hydrogen, and Oxygen).

Front

What are molecules made of more than one type of atom called?

Back

Compounds.

Front

What is the chemical formula for water?

Back

H₂O.

Front

If a chemical formula has a subscript of 3 next to an element symbol, how many atoms of that element are present?

Back

3 atoms.

Front

What is the difference between an element and a compound?

Back

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

Front

What is the chemical formula for carbon dioxide?

Back

CO₂.