Chemical Reactions

Front

What are the substances listed on the right side of a chemical equation called?

Back

Products

Tags

NGSS.MS-PS1-5

Front

What does the law of conservation of mass state?

Back

Matter can neither be created nor destroyed.

Tags

NGSS.MS-PS1-5

Front

How can you determine if a chemical equation is balanced?

Back

A chemical equation is balanced if the number of atoms of each element is the same on both sides of the equation.

Tags

NGSS.MS-PS1-5

Front

What is the term for the information to the right of the arrow in a chemical equation?

Back

Product

Front

Is the equation H4 + O2 → 2H2O balanced or unbalanced?

Back

Balanced.

Tags

NGSS.MS-PS1-5

Front

Is the equation H2 + Br2 → 2HBr balanced or unbalanced?

Back

Balanced.

Tags

NGSS.MS-PS1-5

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Tags

NGSS.MS-PS1-2

Front

What is the difference between a chemical reaction and a physical change?

Back

A chemical reaction involves the transformation of substances into new products, while a physical change does not alter the chemical composition of a substance.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the significance of coefficients in a balanced chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in the reaction.

Tags

NGSS.MS-PS1-1

Front

What is meant by a 'unbalanced' chemical equation?

Back

An unbalanced chemical equation has unequal numbers of atoms of each element on the reactant and product sides.

Tags

NGSS.MS-PS1-5