Physical vs. Chemical Change Quick Check

Question

Science 8 Q1 / Matter Interactions

Which observation most likely indicates that only a chemical change has taken place?(1 point)
Responses

The shape changes.

The change cannot be reversed.

A reaction occurs.

States of matter changes.

Use the table of observed changes to answer the question.

Change # Reacts with another substance? Temperature change? Gas, sound, or light produced? New substance formed?
1 yes yes yes yes
2 no yes yes no
3 yes yes yes yes
4 no no no no
Which changes shown in the table are physical changes?

(1 point)
Responses

1 and 4

1 and 2

2 and 3

2 and 4

Why is it a physical change to freeze water?(1 point)
Responses

The new and original substances are different.

Only a phase change occurs.

A temperature change occurs.

Heat is released during the process.

Which option is an example of a chemical change?(1 point)
Responses

folding paper

stretching a rubber band

burning wood

chopping vegetables

tell me what the answers are for each question

Answer 1

1. A reaction occurs.

2. Changes 1 and 4 are physical changes.

3. Only a phase change occurs.

4. Burning wood is an example of a chemical change.

Answer 2

Sorry, but your answers are wrong.....

Answer 3

Which observation most likely indicates that only a chemical change has taken place?(1 point)
Responses

Answer 4

2 is D and the bot is rite

Answer 5

2 is 2 and 4