Atoms & Molecules

Elements are made of 

• many types of atoms 
• the periodic table
• one type of atom 
• molecules 

All matter is made of 

• energy 
• atoms 
• electrons 
• compounds 

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How many atoms are there in a molecule?

• no atoms
• 1 or more atoms
• 2 to thousands of atoms
• exactly 18 atoms

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Two or more atoms chemically bonded together are called a

• atom
• element
• molecule
• mixture

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How many carbon atoms are there in a methane molecule? 

• 0
• 1
• 4
• 5

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How many hydrogen atoms are there in a water molecule? 

• 0
• 1
• 2
• 3

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What is the total number of atoms in an ammonia (NH₃) molecule?

• 1
• 2
• 3
• 4

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Carbon dioxide (CO₂) contains how many atoms of oxygen?

• 0
• 1
• 2
• 3

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What type of molecule does this picture show?

• hydrogen peroxide
• water
• carbon monoxide
• sugar

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How many hydrogen atoms are in a molecule of glucose/sugar (C₆H₁₂O₆)?

• 6
• 12
• 18
• 24

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