Chem Unit 1 Review

Anything that has mass and volume is called

• atoms

• matter

• chemistry

• elements

Matter is made of particles called

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Each types of atom is called a(n)

• element

• molecule

• proton

• model

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Elements have unique names and 1- or 2-letter

H, Cl and N are

• formulas

• symbols

• elements

• molecules

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Atoms combine to form

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Molecules are held together by

• protons

• subatomic particles

• bonds

• formulas

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How many different elements do you see in this model?

• 2

• 3

• 12

• 16

How many atoms do you see in this model?

• 3

• 10

• 13

• 16

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Elements are represented by symbols, molecules are represented by

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