What does the law of conservation of mass state about atoms in a chemical reaction?
Balancing Equations 1

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Chemistry
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9th - 12th Grade
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Medium
J. Coronado
Used 5+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Atoms are transferred to another dimension
Atoms are destroyed and created
Atoms are neither created nor destroyed
Atoms multiply during reactions
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What must be done to balance a chemical equation?
Change the subscripts in the compounds
Add catalysts to the reaction
Use only even numbers in equations
Adjust the coefficients before the molecules
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the formula 3O2, what does the subscript '2' indicate?
There are two molecules of oxygen
The oxygen is doubled
There are three molecules of oxygen
Each molecule has two oxygen atoms
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many sodium atoms are there in two molecules of Na2O?
Four sodium atoms
Eight sodium atoms
Six sodium atoms
Two sodium atoms
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If you have two molecules of SnO2, how many oxygen atoms are present?
Four oxygen atoms
Three oxygen atoms
Six oxygen atoms
Two oxygen atoms
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