Chem Unit 1 Review

An increase in pressure increasing the boiling point of a liquid is an example of a —

• physical change

• chemical change

• physical property

• chemical property

Which of the following is considered to be a chemical property of matter?

• viscosity

• reactivity

• texture

• density

During an investigation, a student combined two substances as shown above. The student observed a decrease in

temperature when the substances were combined. A milky substance was produced and fell to the bottom of the

flask.

What is the most likely reason for these results?

• A portion the substances crystallized.

• A solid appeared after the liquid evaporated.

• The combined substances chemically reacted.

• A portion of the substances dissolved.

Which of the following is considered to be a physical property of matter?

• reactivity

• pH

• Solubility

• Toxicity

Which two physical properties are used to describe matter?

• mass and reactivity

• weight and toxicity

• volume and pH

• Mass and Volume

Properties that remain the same regardless of the amount present are classified as-

• intensive properties

• extensive properties

• chemical properties

• physical properties

A lab technician is working on a sample of brass and testing its properties. Which of the following properties of the

brass is an extensive property?

• Melting Point: 920°C

• Density: 8.52 g/mL

• Mass: 62.9 g

• Reactivity: Dissolves in strong acid

Conductivity, a property of matter, is the ability to conduct heat or electricity. Some substances are better

conductors than others.

Conductivity is an example of which type of property?

• chemical properties

• intensive properties

• extensive property

• dependent properties

An object is observed to have a silver color and a metallic appearance. The object is also found to have a mass of

11.34 grams and melts at 327.46°C.

Of the observed properties listed below, which is considered to be an extensive property?

• silver

• metallic

• mass

• melting point

Substances with an indefinite shape and an indefinite volume are in which state of matter?

• gaseous state

• liquid state

• solid state

• none