Unit Test "The Structure of Matter"

What is the basic unit of matter and is the smallest particle of an element?

• Atoms
• Elements
• Compounds
• Molecules

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? H²0

• 0

• 1

• 2

• 3

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This is anything that has mass and takes up space (meaning it has a volume).

• matter

• mass

• element

• energy

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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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Is NO₂ an element or a molecule?

• element

• molecule

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How many atoms/elements are in CaCO₃?

• 3
• 4
• 5
• 6

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How many atoms/elements are in NO₂?

• 1
• 2
• 3
• 4

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