Chemistry
Grade-10
Easy
Question
When a scientist mixes two chemicals, an exothermic reaction takes place. Which of the following would be proof that the reaction was exothermic?
- A change of color
- A change of state
- A temperature decrease
- A temperature increase
Hint:
An exothermic reaction is a reaction in which energy is released in the form of light or heat.
The correct answer is: A temperature increase
The proof that the reaction was exothermic is that its Temperature will increase.
An exothermic reaction gives off heat. The heat released causes the mixture to rise in temperature.
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