Balancing chemical equations

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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

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.

Tags

NGSS.MS-PS1-5

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-PS1-5

Front

What does the arrow in a chemical equation represent?

Back

The arrow indicates the direction of the reaction, showing that reactants are transformed into products.

Front

How do you determine if a chemical equation is balanced?

Back

Count the number of atoms of each element on both sides of the equation. If they are equal, the equation is balanced.

Tags

NGSS.MS-PS1-5

Front

What is the law of conservation of mass?

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

Tags

NGSS.MS-PS1-5

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in the reaction and help balance the equation.

Tags

NGSS.MS-PS1-5

Front

What is the total number of atoms in 2H2 + O2?

Back

There are 6 atoms total: 4 hydrogen atoms and 2 oxygen atoms.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Front

What is the formula for calculating the total number of atoms in a compound?

Back

Multiply the subscript of each element by the coefficient, then sum the total for all elements.

Tags

NGSS.MS-PS1-1

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What is the difference between a chemical equation and a chemical reaction?

Back

A chemical equation is a symbolic representation of a chemical reaction, while a chemical reaction is the actual process that occurs.