Chemical Reactions Test

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, following the law of conservation of mass.

Front

How do you balance the equation: Na3PO4 + KOH -> NaOH + K3PO4?

Back

The balanced equation is 1 Na3PO4 + 3 KOH -> 3 NaOH + 1 K3PO4.

Front

What is the solubility of CaSO4?

Back

CaSO4 is soluble in water.

Front

Is iron(II) sulfide (FeS) soluble or insoluble?

Back

Iron(II) sulfide (FeS) is insoluble in water.

Front

What type of reaction produces carbon dioxide and water?

Back

A combustion reaction produces carbon dioxide and water.

Front

What is the general form of a combustion reaction?

Back

A combustion reaction typically involves a hydrocarbon reacting with oxygen to produce carbon dioxide and water.

Front

What is the solubility rule for most sulfates?

Back

Most sulfates are soluble in water, except for barium sulfate, lead(II) sulfate, and calcium sulfate.

Front

What is the difference between a single replacement and a double replacement reaction?

Back

In a single replacement reaction, one element replaces another in a compound. In a double replacement reaction, the ions of two compounds exchange places.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

How do you identify a combustion reaction?

Back

A combustion reaction can be identified by the presence of oxygen as a reactant and the production of carbon dioxide and water as products.