Phy Sci Final Exam Review Fall 2022

Which of the following is the best way to describe a liquid?

• Definite shape, definite volume

• Definite shape, indefinite volume

• Indefinite shape, definite volume

• Indefinite shape, indefinite volume

Which of the following is an example of an exothermic process?

• Ice melting

• Ice sublimating

• Water evaporating

• Water freezing

What change takes place in a substance as the molecular motion of the substance increases?

• The substance changes from a liquid to a gas

• The substance changes from a gas to a liquid

• The substance changes from a liquid to a solid

• The substance changes from a gas to a solid

As water starts to freeze, the molecules of water

• Gain thermal energy

• Move more freely

• Increase in size

• Decrease in speed

Which of the following is a FALSE statement regarding liquids?

• Particles flow past one another

• They have no definite shape

• Have a definite volume

• Particles are far apart from each other

A student mixes sodium chloride (NaCl - table salt) into water. Which of the following describes that mixture?

• Salt is the solute, water is the solvent, salt water is the solution

• Salt is the solvent, water is the solute, and salt water is the solution

• Salt is the solution, water is the solute, and salt water is the solvent

A highly reflection substance that has a high melting point and is able to conduct electricity is most likely classified as…

• A metal

• A nonmetal

• A salt

• A plastic

Water is classified as a ____

• Element

• Compound

• Mixture

• Ionic substance

Which of the following can be broken down into simpler substances?

• Isotopes

• Atoms

• Compounds

• Elements

How is it possible to separate a mixture of salt and water?

• Distillation - separation based on boiling points

• Filtration - separate based on particle size

• It is not possible to separate a mixture of salt and water