What is an exothermic reaction?
7th Grade Practice Fall final

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Science
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
A chemical reaction that releases energy in the form of heat, causing the surrounding temperature to increase.
2.
FLASHCARD QUESTION
Front
What is a molecule?
Back
A group of atoms bonded together.
3.
FLASHCARD QUESTION
Front
What happens during a chemical reaction?
Back
Substances change into different substances.
4.
FLASHCARD QUESTION
Front
What are elements?
Back
Pure substances that cannot be broken down into simpler substances by chemical means.
5.
FLASHCARD QUESTION
Front
Give five examples of elements.
Back
Hydrogen, Oxygen, Gold, Silver, Iron.
6.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A process where reactants are transformed into products, involving the breaking and forming of bonds.
7.
FLASHCARD QUESTION
Front
What are the signs of a chemical reaction?
Back
Color change, temperature change, gas production, and formation of a precipitate.
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