Quiz about Chemical Magic

Question 1

Mia

Accepted Answer

210

Answer

230

Answer

19

Question 2

Kayla

Accepted Answer

220

Answer

190

Answer

215

Question 3

Eli

Accepted Answer

230

Answer

220

Answer

250

Question 4

Eli's popsicles will taste sweeter than Mia's because there is more sugar in them.

Accepted Answer

True

Answer

False

Question 5

Eli's popsicles will weigh slightly more than Mia's popsicles because there is more sugar in them.

Accepted Answer

True

Answer

False

Question 6

Eli's and Mia's popsicles will be the same while Kayla's will be different.

Accepted Answer

False

Answer

True

Question 7

Laila empties her piggy bank and finds ten dull, brown pennies. Laila wants her pennies to look shiny, so she performs an experiment. First, she pours salt and vinegar into a container. Then, she adds the ten pennies and waits a few minutes. When she takes the pennies out of the salt and vinegar solution, they look shiny and new!

Accepted Answer

Click for free points

Answer

Click to be wrong

Question 8

If Laila weighs the salt and vinegar solution and the pennies after the experiment, what do you think she will find?

Accepted Answer

The solution will weigh more and the pennies will weigh less after the experiment.

Answer

The solution will weigh less and the pennies will weigh more after the experiment.

Answer

The solution will weigh the same and the pennies will weigh the same after the experiment.

Answer

The solution will weigh the same and the pennies will weigh less after the experiment.

Question 9

The orange in the graph shows how much the salt and vinegar solution weighed before the experiment. It also shows how much the pennies weighed before the experiment. Laila weighs the pennies after the experiment and finds that they weigh 8 grams. Select the graph that correctly graphs the weights after the experiment.

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 10

A sealed plastic bag filled with vinegar is about to mix with baking soda. When the baking soda mixes with the vinegar, bubbles will form and the plastic bag will start to expand. Why does the bag expand? (select the best answer)

Accepted Answer

The gas particles from the reaction will make the bag expand by pushing out

Answer

It will react

Answer

gas will be created

Answer

bag blow up

Question 11

If you double the baking soda added to the vinegar in the bag, describe how that would change your model from Question 5

Accepted Answer

The extra baking soda will make a larger reaction creating more gas that will likely make the bag burst.

Answer

The bag will burst into flames

Answer

More baking soda will make less reaction

Answer

It will probably blow up

Question 12

Emi drops a cup of baking soda into a glass container that has vinegar at the bottom of it. Then, she quickly puts a balloon on top of the container. What do you predict will happen to the balloon?

Accepted Answer

The balloon will get bigger because it will become filled with gas particles that are too small to be seen.

Answer

The balloon will get bigger because it will become filled with solid (baking soda) particles that are too small to be seen.

Answer

The balloon will get bigger because it will become filled with liquid (vinegar) particles that are too small to be seen.

Answer

The balloon will stay the same because it will not become filled with anything.

Question 13

Which of the three powders (Powder A, Powder B, or Powder C) do you think is the baking soda? Why do you think that? Support your answer with evidence from the experiments. (pick the BEST answer)

Accepted Answer

I think powder B is the baking soda. Both A and B reacted with vinegar, but only powder A reacted with water which makes it the baking powder because baking soda doesn't react with water.

Answer

Powder B because it created bubbles when mixed with vinegar.

Answer

Powder B because it didn't react with water.

Answer

Powder C because it didn't react with water or vinegar.

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