2nd - Counting Atoms, Classifying and Balancing Equations

2nd - Counting Atoms, Classifying and 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 are reactants in a chemical equation?

Back

Reactants are the substances that undergo a chemical change in a reaction, found on the left side of the equation.

2.

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.

3.

FLASHCARD QUESTION

Front

What is a combustion reaction?

Back

A combustion reaction is a chemical reaction that occurs when a substance combines with oxygen, releasing energy in the form of light and heat.

4.

FLASHCARD QUESTION

Front

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

Back

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

5.

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.

6.

FLASHCARD QUESTION

Front

What is a product in a chemical equation?

Back

Products are the substances formed as a result of a chemical reaction, found on the right side of the equation.

7.

FLASHCARD QUESTION

Front

How do you balance the equation H2 + Cl2 -> HCl?

Back

The balanced equation is H2 + Cl2 -> 2HCl, indicating that 1 molecule of hydrogen reacts with 1 molecule of chlorine to produce 2 molecules of hydrochloric acid.

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