Penny Lab

What is the independent variable in Part B of the lab?

• How many drops in the dome

• The side of the penny used

• The water is hot so extreme caution should be taken

• The temperature of the water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the average number of drops for Part 2 of the Penny Lab? Please show your work.

Compare the average number of drops in Part 1 (in the image) with the number of drops in Part 2 (solved in question 15). How does changing the variable affect the number of drops that fit on the penny? Please write in complete sentences.

Tags

NGSS.MS-ETS1-2

Find the average number of drops of water in the Penny Lab Part 2.

Please show all your work to get full credit.

List 3 controlled variables of the Penny Lab Part 2.

Tags

NGSS.MS-PS1-2

Name the independent variable in the Penny Lab Part 2.

At the end of the penny lab, the penny appears to be "gold". What is the true name of this substance?

• Gold

• Titanium

• Bronze

• Brass

Tags

NGSS.MS-PS1-5

The zinc metal strip and the copper wire holding the penny act as ____________________ in this experiment.

• batteries

• electrodes

• products

• alloys

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following would act as a clue that a chemical reaction was taking place when the penny was placed in the solution?

• phase change

• the penny shrunk

• bubbling

Tags

NGSS.MS-PS1-2

Observe the pennies. Did a chemical reaction occur?

• yes

• no

• maybe

Tags

NGSS.MS-PS1-2