IPC Final Review: Chemistry Portion 5-17-22

Front

What is condensation?

Back

Condensation is the process where a gas loses energy and transforms into a liquid.

Front

Which metal will not float in mercury?

Back

Gold will not float in mercury because it has a higher density than mercury.

Front

What is a metallic bond?

Back

A metallic bond is a type of chemical bond that occurs between metal atoms, characterized by a 'sea of electrons' that are free to move.

Front

What must occur for a chemical change to happen?

Back

For a chemical change to occur, substances must react to form new substances.

Front

How do the particles in a solid move compared to those in a gas?

Back

Particles in a solid move slower than particles in a gas.

Front

What is density?

Back

Density is the mass of a substance divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What happens to the energy of a substance during melting?

Back

During melting, a solid gains energy to become a liquid.

Front

What is the significance of a precipitate in a chemical reaction?

Back

The formation of a precipitate indicates that a chemical reaction has occurred, resulting in the creation of an insoluble solid.

Front

What is the boiling point?

Back

The boiling point is the temperature at which a liquid's vapor pressure equals the external pressure surrounding the liquid.