Fall 2024 Final Exam

Front

In order to solve gas law calculations, temperature must be measured in:

Back

Kelvin

Front

Transform 354 grams into kilograms:

Back

0.354 kg

Front

Why do all bonds form?

Back

To fill the outermost energy level.

Front

You are heating a substance in a test tube. Always point the open end of the test tube ________.

Back

Away from all people.

Front

The mass of one mole of an element is equal to:

Back

Its atomic mass from the periodic table, but in grams.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume.

Front

What is the pH scale used for?

Back

To measure the acidity or basicity of a solution.

Front

What is the principle of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

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 significance of the atomic number?

Back

It represents the number of protons in an atom and determines the element's identity.