Fall Semester Exam

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Example: NaCl (sodium chloride).

Front

What is convection?

Back

Convection is the transfer of heat through the movement of liquids and gases.

Front

What is an atom?

Back

An atom is the smallest unit of an element, consisting of protons, neutrons, and electrons.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together. Example: Cl₂ (chlorine gas).

Front

What is the formula to calculate speed?

Back

The formula to calculate speed is S = d/t, where S is speed, d is distance, and t is time.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Example: Oxygen (O).

Front

What is a chemical symbol?

Back

A chemical symbol is a one or two-letter notation used to represent an element. Example: H for hydrogen.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Example: Saltwater.

Front

What is the difference between a molecule and a compound?

Back

A molecule is any group of atoms bonded together, while a compound is a specific type of molecule that contains at least two different elements.

Front

What is the process of evaporation?

Back

Evaporation is the process by which liquid turns into vapor, usually due to heat.