Unit 3 and 4 Final Exam Review

Which of the following is a chemical property?

• Mass

• Conducts Electricity

• Flammability

Which of the following is an extensive property?

• Density

• Color

• Mass

The property "corrosive" is considered to be:

• Physical and extensive

• Physical and intensive

• Chemical and extensive

• Chemical and intensive

Which of the following is an example of a chemical change?

• Freezing water

• Dissolving sugar in water

• Rotting meat

A wire changes from copper colored to silver after placed in a solution. What type of change has likely taken place?

• Physical

• Chemical

• Neither

Three examples of physical changes are:

• Freezing water, rusting nail, evaporating gasoline

• Bursting a balloon, boiling water, cutting paper

• Melting ice cream, burning wood, crushing a can

• Exploding fireworks, rotting eggs, toasting marshmallow

Which statement describes a chemical property that can be used to distinguish between two compounds, A and B?

• Compound A is red, Compound B is blue

• A smells sweet, B smells sour

• A reacts with acid, B doesn't react with acid

• A has a higher boiling point than B

Fe, O, and S are examples of:

• Compounds

• Heterogenous Mixtures

• Elements

Which of the following is a heterogenous mixture?

• Clean air

• Vegetable soup

• Salt water

Water has 2 hydrogens and 1 oxygen, and cannot be physically separated. It is considered a:

• Homogenous mixture

• Compound

• Element