1. Definition: Something that is made of all the same atoms or groups of atoms:

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NGSS.MS-PS1-1

2. Definition: A group of atoms joined together in a particular way:

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NGSS.MS-PS1-1

3. Definition: A process in which atoms rearrange to form new substances:

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

4. Definition: Matter cannot be created or destroyed, only rearranged so the total mass of substances involved will always remain the same:

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NGSS.MS-PS1-5

5. In a chemical reaction, a starting substance is called:

• Rearrange
• Product
• Reactant
• Conserved

6. In a chemical reaction, an ending substance is called:

• Rearrange
• Product
• Reactant
• Conserved

7. We measure how much matter is in a substance using:

• Chemical Reaction
• Molecules
• Conserved
• Mass

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NGSS.MS-PS1-5

8. The simplest format of a substance is:

• An element
• An atom
• A reactant
• A sub-substance

How would you honestly rate yourself on the Proficiency Scale? Remember you can only be at a level if you can also fully do all the levels below it.

• 4
• 3.5
• 3
• 2.5
• 2

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NGSS.MS-PS1-5

Why did you give yourself that proficiency rating?

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NGSS.MS-ETS1-1

NGSS.MS-ETS1-2