What type of reactions usually feel hot?
Flashcardizz S4 T9 L1 & 2 Chemical Change & Conservation of Mass

Flashcard
•
Science, Chemistry
•
7th - 8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
Exothermic reactions release heat.
2.
FLASHCARD QUESTION
Front
What is the term for the number before a chemical formula?
Back
Coefficient.
3.
FLASHCARD QUESTION
Front
What is the chemical formula for water?
Back
4.
FLASHCARD QUESTION
Front
What always happens in a chemical change?
Back
A change in the way atoms are bonded to each other.
5.
FLASHCARD QUESTION
Front
Is the equation Al + O2 ---> 2Al2O3 balanced?
Back
No.
6.
FLASHCARD QUESTION
Front
What is a chemical change?
Back
A process where substances transform into different substances with new properties.
7.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
Mass is neither created nor destroyed in a chemical reaction.
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