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Test: Chemical Reactions (Endo Vs. Exo)

Last updated about 1 year ago

6 questions

1

23

Question 2

2.

Complete the whole sheet

3

TEST PART 2

4

Question 4

4.

Chopstick mixes two beakers she found in the lab; beaker J with beaker K to make beaker L. Chopstick knows that a new substance is made if the density of L is different than J and K.
The density of J and K was the actually same, 4g/mL. Complete the chart below to find the density of L (hint: Density = mass/volume).

Then determine if L is a new substance...

No new substance

New substance made

1

19

Question 1

1.

A) Tyler The Creator just got a job at the L.A Zoo raising penguins. Penguin eggs at the zoo are put in a special cage to be incubated at healthy temperatures away from their parents.

Unfortunately, one of the Zoo’s incubators broke and the temperature is now 45oC, which is too hot for the caged eggs.

Tyler needs to bring the temperature of the cage down as close to 15oC as possible.

Which reaction can Tyler perform in the incubator to bring the temperature to the safe range (close to 15oC) for the eggs in the incubator to soak in?

Mix liver and hydrogen peroxide – Result is a 35oC temp production

Mix Cold Urticaria and oxygen – Result is a 96oC to 121oC temp production

Mix Calcium Chloride and water – Result is a 45oC to 56oC temp production

Mix Citric Acid and baking soda – Result is a 15oC to 17oC temp production

Mix Liquid Nitrogen and water – Result is a 1oC to -5oC temp production

Question 3

3.

Use the 3 sentence starters. Was Jenny’s advice to Tyler good?
Remember Tyler needed a temperature close to 15oC.

Sentence starter 1 Option:
“Jenny gave great/terrible advice.”

Sentence starter 2 Option: “The reason why is because…”

Sentence starter 3 Option: “In conclusion…” or “Tyler should have…”or “A better choice would have been…” or “A smarter reaction would have been”

Word Bank:
endothermic reaction
exothermic reaction
released
absorbed
bonds broken
bonds made

Question 5

5.

In the example below, which is the solvent and the solute?

Other Answer Choices:

solute

solvent

Question 6

6.

Take socrative.com and then type DONE
Room Name: X5EB2CTM6

DONE