Question

@pooja195

Answer 1

Which one is the best description of a chemical reaction?

A.
mixing two substances

B.
the combustion of a substance

C.
forming or breaking bonds

D.
the decomposition of particles

Answer 2

im thinking its d

Answer 3

Nope the that is just breaking down a reactant to form a product.

Answer 4

oh

Answer 5

so its mixing?

Answer 6

Have you considered looking up "chemical reaction?" You're very likely to find a definition that answers your question.

Answer 7

Please, would you look up "chemical reaction," and not guess? Unless you explain your choices, I assume you're guessing.

Answer 8

Mixing is correct

Answer 9

i did made it made no sence

Answer 10

Then please look again for "chemical reaction." Typical search results include hundreds of items. The more independent you can become in researching your own questions, the better off you'll be. Trust me on that.

Answer 11

Mixing is correct because when you mix 2 or more substances together you will get a chemical reactions.
"A chemical reaction is the change of a substance into a new one that has a different chemical identity."
http://www.ric.edu/faculty/ptiskus/reactions/
Zn with O2 to form ZnO2

Answer 12

pooja explains it better and im not good at being indipendent i get fs and my mom gets mad so i hate being indapindant

Answer 13

@MariahDimond it is definetly good to be independent and do a bit of research as @mathmale said.

Answer 14

Otherwise you won't learn

Answer 15

ok but how

Answer 16

Perhaps start by looking up what a chemical reaction is.

Answer 17

Sorry independent research is difficult for you, but it will get better with time and practice. I've said my part and won't say more, other than that constant practice will eventually help you.

Answer 18

ok

Answer 19

thank you

Answer 20

Glad to end this conversation on a positive note. Good luck to you.

Answer 21

:D

Answer 22

Which of the following materials is not part of every chemical reaction?

A.
reactants

B.
products

C.
gases

D.
energy

Answer 23

I'm leaning more twords D but im not all the way sure

Answer 24

D is incorrect.

Answer 25

dang

Answer 26

Well lets find out why

Answer 27

why

Answer 28

@MariahDimond what do you think it is?

Answer 29

c

Answer 30

C is correct. Not every chemical reaction invovles gas.

Answer 31

Good job mariah :)

Answer 32

And good luck =)

Answer 33

YAY

Answer 34

thank you rebecca and pooja

Answer 35

Which one is a true statement about exothermic reactions?

A.
Energy from an outside source is continuously being added.

B.
The reaction container always feels cold.

C.
The reactants have more heat energy than the products.

D.
More heat is given off than is put into the reaction.