IQWST IC2 Review

Front

What happens to the density of a loaf of bread when it is cut in half?

Back

The density remains the same for each half.

Front

Define a mixture in terms of its composition.

Back

A mixture is made of more than one substance (or more than one type of atom or molecule).

Front

If a characteristic changes with the amount of a substance, is it considered a property?

Back

No, it is not considered a property.

Front

What unit is mass measured in?

Back

Mass is measured in grams.

Front

In the chemical reaction H2O + CO2 → H2CO3, what are the reactants?

Back

The reactants are H2O and CO2.

Front

What is the definition of density?

Back

Density is the mass of a substance divided by its volume.

Front

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

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

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

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Front

What is the role of reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change.