Question

Is the melting of gold a physical of chemical change ?

Answer 1

@AloneS @CandyCove @soprano.h.d0816 @rebeccaxhawaii @Daniee_Bruhh @fluttershyK @jigglypuff314 Can anyone help with this ?

Answer 2

Melting gold is a physical change. Note that melted gold is still gold. To undergo a chemical change it would have to become a different substance (which in the case of gold would be unusual, since gold is relatively inert).

Answer 3

ok now i have 3 more can u help ?

Answer 4

I can try!

Answer 5

@Daniee_Bruhh you copied that off answers.com even though its right you cant copy stuff off other sites

Answer 6

1. Is a brick breaking a chemical or physical change ?
2. Is mixing salt and pepper a chemical or physical change ?
3. Is a bike rusting a chemical or physical change ?

Answer 7

@Imverytired
1. physical

Answer 8

1. Breaking a brick would have to be a physical change because it's a physical object.

Answer 9

2. physical

Answer 10

2. Is physical because your not mixing the properties but just the physical form of the two.

Answer 11

3. chemical

Answer 12

3. Rusting is a chemical change. Rust occurs when rain hits medal.

Answer 13

Can u guys help with a few more ? @fluttershyK @Daniee_Bruhh

Answer 14

Sure!

Answer 15

@Imverytired of course

Answer 16

Physical changes

(A)are only caused through burning a material
(B)cannot be detected by the naked eye
(C)do not change the identity of the substance
(D)change the identity of a substance

Answer 17

C. They do not change the identity of the substance because it's not a chemical change that changes the elements of an object.

Answer 18

@Imverytired actually let @Daniee_Bruhh help you I got to go help another friend of mine in english

Answer 19

@Imverytired sorry

Answer 20

A phase change is a type of

(A)physical change
(B)chemical change
(C)nuclear change
(D)covalent change

Answer 21

I think its c

Answer 22

srry not c its b

Answer 23

Hmmm... I think that you were right when you said it was C... Because phase change means The states in which matter can exist: as a solid, liquid, or gas. When temperature changes, matter can undergo a phase change, shifting from one form to another and Nuclear change means the elements can change from one to another. Nuclei can break apart to form smaller elements. Nuclei can fuse together to make heavier elements. Neutrons can turn into protons and protons into neutrons so C seems about right to me.

Answer 24

OOOOh!!!!! i get it! ok

Answer 25

Phase change is a physical change

Answer 26

-_-

Answer 27

All of the following require breaking and forming chemical bonds except

(A)burning coal
(B)rusting iron
(C)evaporating water
(D)tarnishing silver

I think its c

Answer 28

Really? lol maybe you can help then XD

Answer 29

@Imverytired please close this question and open up new one for each of ur questions.