Balancing Equations
Flashcard
•
Science
•
6th - 8th Grade
•
Easy
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What are subscripts in a chemical equation?
Back
Subscripts are the small numbers written to the right of a chemical symbol that indicate the number of atoms of that element in a molecule.
2.
FLASHCARD QUESTION
Front
In the reaction 2H₂ + O₂ → 2H₂O, how many molecules of water are produced?
Back
2 molecules of water.
Tags
NGSS.MS-PS1-5
3.
FLASHCARD QUESTION
Front
What is a coefficient in a chemical equation?
Back
A coefficient is the large number placed to the left of a chemical formula that indicates how many molecules of that substance are involved in the reaction.
Tags
NGSS.MS-PS1-5
4.
FLASHCARD QUESTION
Front
How many Magnesium atoms are in 10MgCl₂?
Back
10 Magnesium atoms.
Tags
NGSS.MS-PS1-1
5.
FLASHCARD QUESTION
Front
What is the little number after an element in a chemical equation called?
Back
Subscript.
6.
FLASHCARD QUESTION
Front
What does the equation 2H₂ + O₂ → 2H₂O represent?
Back
It represents the chemical reaction of hydrogen and oxygen to form water.
Tags
NGSS.MS-PS1-1
NGSS.MS-PS1-2
NGSS.MS-PS1-5
7.
FLASHCARD QUESTION
Front
What is the purpose of balancing chemical equations?
Back
To ensure that the number of atoms of each element is the same on both sides of the equation, following the law of conservation of mass.
Tags
NGSS.MS-PS1-5
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