Chemical Reactions

Front

What are the reactants in the chemical equation 2Mg + O2 -> 2MgO?

Back

Mg and O

Tags

NGSS.MS-PS1-1

Front

Define a chemical reaction.

Back

A process in which atoms rearrange to form new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the definition of a chemical reaction?

Back

The process by which one or more substances change to produce one or more different substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

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

Back

Balanced.

Tags

NGSS.MS-PS1-5

Front

In the equation 6CO2 + 6H2O -> C6H12O6 + 6O2, how many carbon atoms are on each side of the reaction?

Back

6.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Front

What is the law of conservation of mass in relation to chemical reactions?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.

Tags

NGSS.MS-PS1-5

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Tags

NGSS.MS-PS1-5

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What does it mean for a chemical equation to be balanced?

Back

It means that the number of atoms for each element is the same on both sides of the equation.

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.