Chemistry Vocabulary

An element is

• a simple chemical

• a complex chemical

• a simple partilcle made of one type of atom

• a particle made of different types of atoms

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NGSS.MS-PS1-1

An atom is

• any small simple particle

• a small unit particle of an element

• a small unit particle of a compound

• a molecule

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NGSS.MS-PS1-1

A substance that is formed as the result of a chemical reaction is a __________________

• Product

• Reactant

• Starters

• Enders

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NGSS.MS-PS1-2

Which of the following is an example of a chemical change?

• water freezes to form ice

• sugar dissolves in water

• gasoline burns in a car engine

• a piece of metal expands when it is heated

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NGSS.MS-PS1-2

Which of the following is an example of a chemical change?

• rusting of a bicycle
• painting a house
• washing a dog
• tearing up a newspaper

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NGSS.MS-PS1-2

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Which one shows that a chemical reaction has occurred?

• dissolving

• melting

• formation of a gas

• bending

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NGSS.MS-PS1-2

Which of the following IS a physical change?

• Getting a haircut

• Rusty metal

• sour milk

What type of change occurs when a new substance is formed that has different properties from the original substances?

• chemical change
• nuclear change
• physical change
• mutation

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NGSS.MS-PS1-2

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In a ___________change, a substance changes into a different substance.

• Physical
• Chemical

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NGSS.MS-PS1-2

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What is the BEST definition of a chemical reaction?

• A change in matter that produces one or more NEW substances

• When two things combine and EXPLODE.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5