Matter Unit Review

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing its identity, such as color, shape, or melting point.

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to change into different substances, such as flammability or reactivity.

Front

Is the ability to be magnetized a physical or chemical property?

Back

Physical property.

Front

What happens during a physical change?

Back

The form of a substance changes, but its chemical composition remains the same.

Front

What happens during a chemical change?

Back

The substance transforms into one or more different substances with new chemical properties.

Front

What is the coefficient in a chemical formula?

Back

A number placed in front of a chemical formula to indicate how many molecules or moles of that substance are present.

Front

In the equation 3H2O, what does the '3' represent?

Back

It indicates that there are three molecules of water.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

If reactant A has 5g and product C has 9g, how much does reactant B weigh?

Back

4g.

Front

What is an example of a physical change?

Back

Dissolving sugar in water.