5.01 Conservation of Mass and Energy

Aluminum reacts with iron nitrate to form aluminum nitrate and iron. What is the reactant, or what are the reactants, in this chemical equation?

• aluminum nitrate

• iron and aluminum

• aluminum and iron nitrate

• aluminum nitrate and iron

In the decomposition reaction of aluminum oxide, what is/are the product(s)?

Al₂O₃ ==> Al + O₂

• Al

• O₂

• Al & O₂

• Al₂O₃

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is true of the following chemical reaction?

Hg + O → HgO

• The mass of the individual reactants together is more than the mass of the product.

• The mass of the products is equal to the mass of the reactants.

• The mass of oxygen does not add to the equation because it is a gas.

• The mass of the products is more than the mass of the reactants.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Your car burns gasoline with air to make heat. Where does most of this energy come from?

• chemical bonds of the gasoline

• energy stored in the pistons of the engine

• spark plugs

• air

Tags

NGSS.MS-PS3-5