What is the term for one or two letters used to represent an element?
Chemical Formulas and Reactions

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Science
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8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Symbol(s)
2.
FLASHCARD QUESTION
Front
What does the arrow symbol in a chemical equation represent?
Back
It shows that a reaction has taken place, often referred to as 'yields'.
3.
FLASHCARD QUESTION
Front
What is a sign of a chemical change?
Back
Unexpected color change.
4.
FLASHCARD QUESTION
Front
How can you tell a chemical reaction has occurred when baking?
Back
The ingredients cannot be returned to their original state.
5.
FLASHCARD QUESTION
Front
What is the main difference between a physical change and a chemical change?
Back
Chemical changes produce a new substance, while physical changes do not change the substance itself.
6.
FLASHCARD QUESTION
Front
What is the definition of a reactant in a chemical reaction?
Back
A substance that is present at the start of a chemical reaction.
7.
FLASHCARD QUESTION
Front
What is a product in a chemical reaction?
Back
A substance that is formed as a result of a chemical reaction.
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