What is the little number written below an element in a chemical equation called? Example: H₂
Chemical Equations

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Science
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7th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Subscript
2.
FLASHCARD QUESTION
Front
Which of the following is NOT a sign of a chemical change? A sudden release of heat, Bubbles forming, Two liquids mixed creating a precipitate, Melting in the hot sun
Back
Melting in the hot sun
3.
FLASHCARD QUESTION
Front
Is the following equation balanced? 2C₂H₂ + 5O₂ --> 4CO₂ + 2H₂O
Back
Yes
4.
FLASHCARD QUESTION
Front
Which of the following equations are correctly balanced? 1) 12CO₂ + H₂O --> C₆H₁₂O₆ + O₂ 2) CO₂ + 9H₂O --> C₆H₁₂O₆ + O₂ 3) CO₂ + H₂O --> 3C₆H₁₂O₆ + O₂ 4) 6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂
Back
6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂
5.
FLASHCARD QUESTION
Front
How many Hydrogen are in 4H₂O?
Back
8
6.
FLASHCARD QUESTION
Front
What is a chemical equation?
Back
A representation of a chemical reaction using symbols and formulas.
7.
FLASHCARD QUESTION
Front
What does a coefficient in a chemical equation represent?
Back
The number of molecules or moles of a substance.
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