Balancing Equations

Balancing Equations

Assessment

Flashcard

Chemistry

10th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved during the reaction.

2.

FLASHCARD QUESTION

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

3.

FLASHCARD QUESTION

Front

How do you determine the number of atoms in a compound?

Back

Count the subscripts in the chemical formula. For example, in H2O, there are 2 hydrogen atoms and 1 oxygen atom.

4.

FLASHCARD QUESTION

Front

What does a coefficient in a chemical equation represent?

Back

A coefficient indicates the number of molecules or moles of a substance involved in the reaction.

5.

FLASHCARD QUESTION

Front

Balance the equation: _C + _O2 → _CO2

Back

1, 1, 1 (C + O2 → CO2) is balanced.

6.

FLASHCARD QUESTION

Front

What is the first step in balancing a chemical equation?

Back

Identify the number of atoms of each element on both sides of the equation.

7.

FLASHCARD QUESTION

Front

How many hydrogen atoms are in the balanced equation: 2H2 + O2 → 2H2O?

Back

There are 4 hydrogen atoms on the reactant side and 4 on the product side, so it is balanced.

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