Chemistry, 03.12.2021 17:50, 25linm

Chemical reactions either release or store energy. In endothermic reactions, energy is stored as heat, and you might notice a decrease in temperature. In exothermic reactions, heat energy is released, and temperature will increase. Chemical reactions store or release chemical energy, too. Chemical energy is stored in chemical bonds, and when bonds break, that energy is released. According to the passage, what evidence can show if a reaction is endothermic or exothermic?

a. the presence of bubbles
b. a temperature change
c. glass breaking

Answers: 3

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 22:50, ZillaKami

2. you__turn left on a red light if you are in the left-most lane of a one-way street, you're turning into the left-most lane of a one-way street, and no nearby sign prohibits the turn.

Answers: 2

continue

Chemistry, 22.06.2019 00:10, mpchop

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

Answers: 3

continue

Chemistry, 22.06.2019 14:00, dshood6599

List the path of the respiratory system

Answers: 1

continue

Chemistry, 22.06.2019 19:40, 20vmiller

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles

Answers: 2

continue

Do you know the correct answer?

Chemical reactions either release or store energy. In endothermic reactions, energy is stored as hea...