Balancing Chemical Equations

Balancing Chemical Equations

Assessment

Flashcard

Science

10th Grade

Hard

NGSS
MS-PS1-5, MS-PS1-2, MS-PS1-1

Standards-aligned

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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.

Tags

NGSS.MS-PS1-5

2.

FLASHCARD QUESTION

Front

What does it mean if an equation is unbalanced?

Back

An unbalanced equation does not have the same number of atoms of each element on both sides, which violates the law of conservation of mass.

Tags

NGSS.MS-PS1-5

3.

FLASHCARD QUESTION

Front

What is the purpose of balancing chemical equations?

Back

Balancing chemical equations ensures that the same amount of matter is present before and after a chemical reaction, reflecting the conservation of mass.

Tags

NGSS.MS-PS1-5

4.

FLASHCARD QUESTION

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula to indicate how many molecules or moles of that substance are involved in the reaction.

5.

FLASHCARD QUESTION

Front

What is a subscript in a chemical formula?

Back

A subscript is a small number written to the right of an element symbol that indicates the number of atoms of that element in a molecule.

6.

FLASHCARD QUESTION

Front

What are reactants in a chemical equation?

Back

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

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

7.

FLASHCARD QUESTION

Front

What are products 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.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

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