2. Chemical vs. Physical Changes Post test

Quiz Summary

0 of 10 Questions completed

Questions:

You have already completed the quiz before. Hence you can not start it again.

Quiz is loading…

You must sign in or sign up to start the quiz.

You must first complete the following:

Results

Quiz complete. Results are being recorded.

Results

0 of 10 Questions answered correctly

Your time:

You have reached 0 of 0 point(s), (0)

Average score
Your score

maximum of 10 points
Pos.	Name	Entered on	Points	Result
Table is loading
No data available

Question 1 of 10

1. Question

What is an example of a chemical change being changed back into its original form?

Soaking an old penny in vinegar.
Correct Incorrect Correct answer

Adding more fire to burning paper.
Correct Incorrect Correct answer

Turn the heat up on a cake baking in the oven.
Correct Incorrect Correct answer

Using the defrost in a car to remove the ice off the windshield.
Correct Incorrect Correct answer

Correct

Incorrect
Question 2 of 10

2. Question

Select ALL of the following that are examples of chemical changes. (4 choices)

Combustion
Correct Incorrect Correct answer

Rotting
Correct Incorrect Correct answer

Rusting
Correct Incorrect Correct answer

Digestion
Correct Incorrect Correct answer

Shredding into smaller pieces
Correct Incorrect Correct answer

Correct

Incorrect
Question 3 of 10

3. Question

Why are most chemical changes considered to be irreversible?

You cannot change the substance(s) back into its original form.
Correct Incorrect Correct answer

You can change the substance back into its original form.
Correct Incorrect Correct answer

Because once the substance is smaller you cannot make it larger again.
Correct Incorrect Correct answer

Because once the substance is larger you cannot make it smaller again.
Correct Incorrect Correct answer

Correct

Incorrect
Question 4 of 10

4. Question

Select ALL of the following that are indicators that a chemical change has occurred. (3 choices)

Bubbles are formed and released as a gas
Correct Incorrect Correct answer

A change of color or odor is produced
Correct Incorrect Correct answer

Release of heat and light
Correct Incorrect Correct answer

The object gets smaller or larger in size
Correct Incorrect Correct answer

The object melts
Correct Incorrect Correct answer

Correct

Incorrect
Question 5 of 10

5. Question

What’s the difference between reversible and irreversible physical changes?

An irreversible physical change can be changed back into its original form, while a reversible physical change cannot.
Correct Incorrect Correct answer

A reversible physical change can be changed back into its original form, while an irreversible physical change cannot.
Correct Incorrect Correct answer

They both can be changed back into their original form.
Correct Incorrect Correct answer

There is no difference.
Correct Incorrect Correct answer

Correct

Incorrect
Question 6 of 10

6. Question

What type of change is it when salt dissolves into water?

Reversible physical change
Correct Incorrect Correct answer

Irreversible physical change
Correct Incorrect Correct answer

Reversible chemical change
Correct Incorrect Correct answer

Irreversible chemical change
Correct Incorrect Correct answer

Correct

Incorrect
Question 7 of 10

7. Question

Which of the following is an example of an irreversible physical change?

Boiling salt in water
Correct Incorrect Correct answer

Melting ice
Correct Incorrect Correct answer

Chopping a piece of wood in half
Correct Incorrect Correct answer

Freezing Koolaid
Correct Incorrect Correct answer

Correct

Incorrect
Question 8 of 10

8. Question

A student is investigating chemical changes by using different materials.

Which investigation would provide evidence of a chemical change and why?

Melting a solid with fire would provide evidence of a chemical change because the solid would change shape .
Correct Incorrect Correct answer

Cutting cardboard into many smaller pieces would provide evidence of a chemical change because the pieces cannot be put back together .
Correct Incorrect Correct answer

Placing a solid into hot water and stirring while the solid dissolves would provide evidence of a chemical change because the dissolved material is lost .
Correct Incorrect Correct answer

Combining two liquids that give off heat and gas would provide evidence of a chemical change because the particles react to make a new material with different properties .
Correct Incorrect Correct answer

Correct

Incorrect
Question 9 of 10

9. Question

Which investigation would provide evidence of a chemical change?

Spray perfume into the air, and when the air and perfume mix, observe the change in odor that happens as they mix .
Correct Incorrect Correct answer

Put an antacid tablet in water, and when the antacid and water mix, observe the bubbles that form as a new substance is created .
Correct Incorrect Correct answer

Heat water in a pan on a stove, and observe the steam that forms as the state of matter of the water changes .
Correct Incorrect Correct answer

Blow air through a wand filled with soap solution, and observe the bubbles that form as the air becomes trapped
Correct Incorrect Correct answer

Correct

Incorrect
Question 10 of 10

10. Question

Which investigation would provide evidence of a physical change?

Burning firewood to keep warm. When the fire burns the wood a new substance is formed.
Correct Incorrect Correct answer

Boiling an egg. When the egg is boiled in hot water a new substance is formed.
Correct Incorrect Correct answer

Cutting a piece of paper. When the paper is cut, the size of the paper changes, but the substance remains the same.
Correct Incorrect Correct answer

Mixing ingredients together to make a cake. When the ingredients are mixed together and put in the oven, a new substance is formed.
Correct Incorrect Correct answer

Correct

Incorrect

2. Chemical vs. Physical Changes Post test

Quiz Summary

Information

Results

Results

Categories

1. Question

2. Question

3. Question

4. Question

5. Question

6. Question

7. Question

8. Question

9. Question

10. Question