Unit 4 - Properties of Matter - Chem Final Exam Review

Front

What is viscosity?

Back

Viscosity is a measure of a fluid's resistance to flow. A higher viscosity means the fluid flows more slowly.

Front

How does density affect the behavior of substances in a liquid?

Back

Substances with a density greater than the liquid will sink, while those with a lower density will float.

Front

What is rust and how is it formed?

Back

Rust is a chemical compound formed when iron reacts with oxygen and water, resulting in iron oxide.

Front

What are intermolecular forces?

Back

Intermolecular forces are the forces of attraction or repulsion between neighboring particles (atoms, molecules, or ions).

Front

How does the number of carbon atoms affect the intermolecular forces in alkanes?

Back

In alkanes, as the number of carbon atoms increases, the intermolecular forces generally become stronger.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.

Front

What is the significance of a substance's density in identifying it?

Back

Density can help identify a substance because each material has a characteristic density that can be used for comparison.

Front

What is the difference between physical and chemical changes?

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 is the principle of buoyancy?

Back

The principle of buoyancy states that an object submerged in a fluid experiences an upward force equal to the weight of the fluid displaced.

Front

What is the role of water in determining the density of an unknown substance?

Back

Water's density (1.00 g/mL) serves as a reference point to determine whether an unknown substance will float or sink.