What is a coefficient in a chemical equation?
Intro to Balancing Equations

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•
Chemistry
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A coefficient is a number placed in front of a chemical formula to indicate how many molecules or atoms of that substance are involved in the reaction.
2.
FLASHCARD QUESTION
Front
How do you determine the number of atoms of an element in a chemical equation?
Back
Count the coefficients and subscripts in the chemical formula. For example, in 4Al + 3O2 --> 2Al2O3, there are 4 aluminum atoms on the left side.
3.
FLASHCARD QUESTION
Front
What are the products in a chemical equation?
Back
The products are the substances formed as a result of a chemical reaction, found on the right side of the equation.
4.
FLASHCARD QUESTION
Front
What are reactants in a chemical equation?
Back
Reactants are the starting substances that undergo a chemical change, found on the left side of the equation.
5.
FLASHCARD QUESTION
Front
How many total atoms are in H2SO4?
Back
There are 7 total atoms in H2SO4: 2 hydrogen, 1 sulfur, and 4 oxygen.
6.
FLASHCARD QUESTION
Front
What does it mean to balance a chemical equation?
Back
Balancing a chemical equation means ensuring that the number of atoms of each element is the same on both sides of the equation.
7.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.
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