![Chemistry](/tpl/images/cats/himiya.png)
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](/tpl/images/cats/otvet.png)
Answers: 2
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
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](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
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
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](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 08.04.2021 14:00
![Konu](/tpl/images/cats/mat.png)
Mathematics, 08.04.2021 14:00
![Konu](/tpl/images/cats/mat.png)
Mathematics, 08.04.2021 14:00
![Konu](/tpl/images/cats/himiya.png)
Chemistry, 08.04.2021 14:00
![Konu](/tpl/images/cats/fizika.png)
![Konu](/tpl/images/cats/fizika.png)
![Konu](/tpl/images/cats/himiya.png)
Chemistry, 08.04.2021 14:00
![Konu](/tpl/images/cats/mat.png)
Mathematics, 08.04.2021 14:00