8.6 ACD Classifying Matter and Water Review

Front

What is the name of the force that creates a tight 'skin' across the water, allowing objects to float?

Back

Surface tension is the force that creates a tight 'skin' on the surface of water, allowing objects like paper clips to float.

Front

What is the ability of water to move upward, against gravity, through small openings called?

Back

Capillary action is the ability of water to move upward against gravity through small openings.

Front

What is the pH value of a neutral solution at 25°C?

Back

The pH value of a neutral solution at 25°C is 7.

Front

What best describes a homogeneous mixture?

Back

A homogeneous mixture has a uniform composition throughout.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is the difference between a homogeneous mixture and a heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition, while a heterogeneous mixture has visibly different substances or phases.

Front

What is polarity in water?

Back

Polarity in water refers to the uneven distribution of electron density, resulting in a molecule with a partial positive charge on one side and a partial negative charge on the other.

Front

What is the significance of water's high specific heat?

Back

Water's high specific heat means it can absorb a lot of heat without a significant change in temperature, which helps regulate climate and maintain stable environments.