Chemistry Semester Exam Review

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

• Melting ice

• Boiling water

• Rusting iron

• Dissolving salt in water

What type of property remains constant regardless of the amount of substance present?

• Extensive property

• Intensive property

• Chemical property

• Physical property

Which of the following is an example of an extensive property?

• Density

• Temperature

• Mass

• Melting point

If you double the quantity of a substance and the property remains the same, it is a:

• Intensive property

• Extensive property

• Chemical property

• Physical property

In which state of matter do particles have the least amount of kinetic energy?

• Solid

• Liquid

• Gas

• Plasma

What is the defining characteristic of a gas?

• Fixed shape

• Fixed volume

• Conforms to the shape of its container

• High density

Which of the following is a pure substance?

• Air

• Saltwater

• Oxygen gas

• Salad dressing

A mixture can be separated into its components by:

• Chemical reaction

• Physical means

• Both a and b

• None of the above

Who is credited with the development of the first periodic table?

• Dmitri Mendeleev

• Antoine Lavoisier

• John Dalton

• Robert Boyle

How did Mendeleev organize elements in his periodic table?

• Increasing atomic number

• Increasing atomic mass

• Alphabetically

• Randomly