Physical Science Trimester Exam

If the following liquids are poured into a graduated cylinder, which liquid would be the TOP layer?

• Water (1 g/mL)
• Mercury (13.5 g/mL)
• Syrup (1.37 g/mL)
• Honey (1.42 g/mL)

When will an object sink in water?

• When the density I less than 1 g/mL
• When the density is more than 1 g/mL
• When the density is equal to 1 g/mL
• When the density is changing

What is a substance that is made up of only 1 type of atom?

• Compound
• Element
• Mixture
• Solution

Gold has a higher density than iron. Which of the following must be true?

• Gold's atoms are farther apart than iron's atoms.
• Gold's atoms are closer together than iron's atoms.
• Gold's atoms are moving faster than iron's atoms.
• Gold's atoms are moving slower than iron's atoms.

Which of the following is a mixture in which one substance is dissolve in a liquid?

• Colloid
• Element
• Solution
• Suspension

What type of mixture separates into layers over time?

• Colloid
• Homogeneous Mixture
• Solution
• Suspension

What did J.J. Thomson discover about the atom?

• Electron
• Neutron
• Proton
• Nucleus

Which scientist developed the concept of energy levels?

• Bohr
• Dalton
• Rutherford
• Thomson

Which scientist discovered the nucleus?

• Bohr
• Dalton
• Rutherford
• Thomson

What is the charge of an electron?

• Positive
• Negative
• Neutral