Chemistry Final Review

Which of the following are 2 physical properties of water.

• Polarity and Specific heat

• Temp change and formation of a precipitate

• Colorless and odorless

Which of the following are 2 chemical properties of water.

• Polarity and Specific heat

• Temp change and formation of a precipitate

• Colorless and odorless

What is the definition of a physical change?

• A physical change is a change in which the substance turns into a completely different substance.
• A physical change is a change in which the substance's physical appearance or state changes, but its chemical composition remains the same.
• A physical change is a change in which the substance disappears completely.
• A physical change is a change in which the substance's chemical composition changes.

What is the definition of a chemical change?

• A chemical change is a change in which the substance turns into a completely different substance.

• A chemical change is a c in which the substance's physical appearance or state changes, but its chemical composition remains the same.

• A chemical change is a change in which the substance disappears completely.

• A chemical change is a change in which the substance's chemical composition changes.

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

• Mixing salt and water
• Burning paper
• Melting of ice
• Boiling water

Which of the following is the correct definition of an intensive property?

• A property that is independent of the amount of substance

• A property that is dependent on the amount of substance

Which of the following is the correct definition of an extensive property?

• A property that is independent of the amount of substance

• A property that is dependent on the amount of substance

Of intensive and extensive properties, which can be used to find the identity of an unknown substance?

• Intensive

• Extensive

Who proposed that everything in the world is made up of tiny particles?

• Democritus

• Thomson

• Bohr

• Rutherford

Who performed the cathode ray tube experiment leading to the discovery of electrons?

• Democritus

• Thomson

• Bohr

• Rutherford