Question

How are physical and chemical changes similar?
A.) Neither can change the number of atoms of each element that are present.

B.) Neither can cause chemical bonds to break.

C.) Neither can result in a phase change.

D.)Neither can cause a substance to give off heat or ligHT

Answer 1

@amandasoto144 @AwkwardsWhatIAmFor @avrillavigne @amistre64 @some_someone @surjithayer @SnuggieLad @sexygirl7400

Answer 2

@willray @e.cociuba @Erin001001 @robtobey @radar

Answer 3

Do you know what physical and chemical changes are?

Answer 4

I've always had more fun grading the question-asker, than answering silly questions on tests -- in this case, none of the options are actually correct. One is more correct than the others.

Answer 5

@e.cociuba yes i do

Answer 6

Okay, so by knowing this which of the 4 options, are not correct?

Answer 7

So by knowing that, you would know that D is automatically knocked off the list.

Answer 8

Let;s move on to C. Do you know what a phase change is?

Answer 9

It is the change in the state of matter (state: solid, liquid Gas). So, by this you would know that C is also off. Now we are left with A and B.

Answer 10

Can you tell me what B is talking about?

Answer 11

It's talking about how chemical bonds are the bonds between two atoms in a molecule. So from here we now know that the answer is A.

Answer 12

In a chemical equation the number of atoms on one side has to equal that on the other and if you melt an ice cube, all of the water molecules are still there, they' re just in a puddle. So, by this you know it's A :)

Answer 13

@e.cociuba thank you!!!

Answer 14

No problem :)