Chemistry, 27.08.2021 01:40 toricepeda82
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 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 the same, and the change was endothermic.
Answers: 2
Another question on Chemistry
Chemistry, 21.06.2019 21:00
Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal
Answers: 2
Chemistry, 21.06.2019 23:00
Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?
Answers: 1
Chemistry, 22.06.2019 00:00
Which of the following methods uses the decay of atomic particles in an object to find its exact age? a. fossil dating b. geologic dating c. radioactive dating d. relative dating
Answers: 1
You know the right answer?
An unknown substance undergoes a chemical change that gives off heat.
Which statement is true?
Questions
English, 26.09.2019 05:30
English, 26.09.2019 05:30
History, 26.09.2019 05:30
English, 26.09.2019 05:30
English, 26.09.2019 05:30
English, 26.09.2019 05:30
