Chemistry
Chemistry, 07.09.2020 02:01, ani69

An unknown substance undergoes a chemical change that gives off heat. Which statement is true? The types of molecules of the substance before and after the chemical change are the same, and the change was exothermic

The types of molecules of the substance before and after the chemical change are different, and the change was endothermic

The types of molecules of the substance before and after the chemical change are different, and the change was exothermic

The types of molecules of the substance before and after the chemical change are the same, and the change was endothermic

answer
Answers: 2

Other questions on the subject: Chemistry

image
Chemistry, 21.06.2019 22:00, toledanomariap43bxm
Fission of uranium-235 products energy and a. isotopes of smaller elements b. isotopes of larger elements c. lighter isotopes of uranium d. heavier isotopes of uranium
Answers: 3
image
Chemistry, 22.06.2019 02:30, marley462847
How would you reduce the volume of gas
Answers: 1
image
Chemistry, 22.06.2019 06:30, caitybugking
Type the correct answer in the box. spell all words correctly. what is the correct term for living the most sustainable life you can within your current circumstances? when your are being as sustainable as you can within your current lifestyle, you are said to be sustainability.
Answers: 3
image
Chemistry, 22.06.2019 07:30, zarzuba
In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?
Answers: 1
Do you know the correct answer?
An unknown substance undergoes a chemical change that gives off heat. Which statement is true? The...

Questions in other subjects:

Konu
Mathematics, 08.04.2021 14:00
Konu
Mathematics, 08.04.2021 14:00
Konu
Chemistry, 08.04.2021 14:00
Konu
Chemistry, 08.04.2021 14:00