Chemical Magic: Mystery 1

1. How can you make a dull penny shine again?

• Leave it in salt water.

• Wash it with soapy water.

• Dip it in vinegar and salt.

2. A long time ago, there were people who experimented by mixing substances together in an attempt to create something like a potion. They were called _____.

• The Masons

• The Alchemists

• The Metalsmiths

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

3. These individuals discussed in question 2, were trying to _____.

• create something that would make them stronger

• create something that would make them younger.

• create something that would make them richer.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS3-1

NGSS.MS-LS4-4

4. What causes a penny to turn brown?

• dirt

• air

• oil

Tags

NGSS.MS-PS1-2

5. Why did you dip only half of your penny into your liquid during the experiment?

• Only half of it was dirty.

• So we could dip the other half in another liquid.

• To compare the two sides, to see if your penny became shiny or not.

Tags

NGSS.MS-PS1-2

6. When pennies or even food become darker, we refer to that as _____.

• Molding

• Oxidizing

• Rotting

7. Three friends are talking about what they think causes shiny pennies to turn dull. Their thoughts are below. Who has the right idea about what makes a penny dull?

Deandre says: "I think they turn dull because they're exposed to the air over time."

Jamie says " I think they turn dull because they get dirt on them from being dropped on the ground."

Selina says "I think there is dull metal inside the penny the entire time."

• Deandre

• Jamie

• Selina

Tags

NGSS.MS-PS1-2

8. Explain your choice from question 7. Why do you think that friend is correct?

Tags

NGSS.HS-ETS1-3