Counting Atoms

Front

How many Hydrogen atoms are in 4H₂O?

Back

8

Front

A subscript is the small number below the element symbol that tells the number of _______ of that element.

Back

atoms

Front

How many Hydrogen atoms in 3(NH₄)₂CrO₄?

Back

24

Front

Which of the following is a compound? (Options: Co, O₂, C, CO₂)

Back

CO₂

Front

How many Aluminum atoms are in Al₂O₃?

Back

2

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

What is the chemical formula for water?

Back

H₂O

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.

Front

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

Back

Add the number of atoms represented by each element in the formula.