Chemical Reactions Final Unit Assessment

1. Rust forming is an example of what process?

• Chemical Reaction
• Phase Change
• Respiration

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NGSS.MS-PS1-2

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2. Which of the following is NOT an example of a chemical reaction?

• Mixing flour and sugar
• Rusting or Oxidation
• Burning a piece of paper

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NGSS.MS-PS1-2

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3. What are Atoms?

• large gas particles
• small microscopic insects
• smallest units of matter that make up everything

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NGSS.MS-PS1-1

4. What is a structure formed by repeating groups of atoms that link together in a large network?

• Atom
• Molecule
• Atomic Structure

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NGSS.MS-PS1-1

5. The two samples below are....

• the Same Substance
• different Substance

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NGSS.MS-PS1-1

6. Yes or No: The picture/diagram below demonstrates or shows a Chemical Reaction?

• Yes
• No

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NGSS.MS-PS1-2

7. True or False: When a chemical reaction occurs, you are ALWAYS left with a new substance.

• True
• False

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NGSS.MS-PS1-2

8. What does it mean to change the order or position of something?

• Redo
• Rearrange
• Mass

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9. During the chemical reaction that produced rust, not ALL of the atoms rearranged to form rust. What happened to the atoms that did not regroup to form rust?

• The atoms disappeared and no longer existed.
• The atoms were arranged to become another product.
• The atoms decomposed and were destroyed.

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NGSS.MS-PS1-5

10. True or False: The model below shows an example of what happens during a chemical reaction.

• True
• False

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NGSS.MS-PS1-2

NGSS.MS-PS1-5