Question

Can someone please check my answer?

How are physical and chemical changes similar?

Neither can change the number of atoms of each element that are present.

Neither can cause chemical bonds to break.

Neither can result in a phase change. <-------

Neither can cause a substance to give off heat or light.

Answer 1

can't chemical changes cause chemical bonds to break?

Answer 2

Yes but physical changes can't

Answer 3

oh is this an mcq question?

Answer 4

What is mcg?

Answer 5

multiple choice question, i'm wondering because there are 4 answers there and you put your arrow on the third one as if to select it

Answer 6

Yes

Answer 7

physical changes may involve changing of physical properties, for example melting. so the answer is not the 3rd choice

Answer 8

My second choice is the 4th choice

Answer 9

Exothermic reactions give off heat, so some chemical reactions may give off heat.

Answer 10

Then is it the first one?

Answer 11

Yeap

Answer 12

Thank you!!

Answer 13

np :)