The smallest unit of matter

• molecule

• atom

• compound

Elements are made of 

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

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NGSS.MS-PS1-1

All matter is made of 

• energy 
• atoms 
• electrons 
• compounds 

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NGSS.MS-PS1-1

What are the 3 particles that make-up the atom?

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and electrons
• protons, neutrons, and electrons

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NGSS.MS-PS1-1

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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NGSS.MS-PS1-1

Two or more atoms chemically bonded together are called a

• atom
• element
• molecule
• mixture

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NGSS.MS-PS1-1

How many hydrogen atoms are there in a water molecule (H2 O)?

• 0

• 1

• 2

• 3

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NGSS.MS-PS1-1

How many carbon atoms are there in a methane molecule (CH4)?

• 0

• 1

• 4

• 5

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NGSS.MS-PS1-1

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

• 1

• 2

• 3

• 4

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NGSS.MS-PS1-1

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

• 0
• 1
• 2
• 3

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NGSS.MS-PS1-1