Midterm Review

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include Helium, Iron, and Oxygen.

Front

Which of the following is an example of an element?

Back

Helium is an example of an element.

Front

What happens to frequency as wavelength increases?

Back

As wavelength increases, frequency decreases.

Front

What is the relationship between frequency and wavelength?

Back

Frequency and wavelength are inversely related; as one increases, the other decreases.

Front

Is sodium (Na) an element or a mixture?

Back

Sodium (Na) is considered an element.

Front

What type of star is the sun?

Back

The sun is classified as a main sequence star.

Front

What is a solute?

Back

A solute is the substance that gets dissolved in a solution.

Front

What is a solution?

Back

A solution is a homogeneous mixture composed of two or more substances, where one substance (the solute) is dissolved in another (the solvent).

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the definition of 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.