Chem fall final practice

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a type of mixture where the components are not uniformly distributed, and different parts can be seen and separated, such as salad dressing.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, meaning the different components are not distinguishable, like saltwater.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout, such as distilled water.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together, like water (H2O).

Front

What does Boyle's Law state?

Back

Boyle's Law states that at constant temperature, the pressure and volume of a gas are inversely proportional.

Front

How does pressure affect gas volume according to Boyle's Law?

Back

As pressure increases, the volume of a gas decreases, and vice versa, when temperature is held constant.

Front

What happens to the volume of air in a buoyancy control device as a diver descends?

Back

The volume of air decreases due to increased pressure, requiring divers to adjust their buoyancy.

Front

At what temperature does water boil at sea level?

Back

Water boils at 100°C at sea level.

Front

What occurs to the particles of a liquid as it reaches its freezing point?

Back

The particles decelerate and arrange themselves more systematically, forming a solid.

Front

What is the heating curve?

Back

The heating curve is a graph that shows the change in temperature of a substance as it is heated over time, illustrating phase changes.