2024 Mid-Term Review

Front

What is carbon dioxide (CO₂)?

Back

A molecule consisting of 3 atoms.

Front

What is a group of two or more atoms called?

Back

A molecule.

Front

Who moved the fastest in 3 seconds: biker, runner, or walker?

Back

Biker.

Front

What is the formula for average speed?

Back

Total distance divided by total time.

Front

If a student traveled 200 meters in 40 seconds, what was his average speed?

Back

5 m/s.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances.

Front

What is a compound?

Back

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

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What is acceleration?

Back

The rate of change of velocity over time.

Front

What is the unit of speed in the metric system?

Back

Meters per second (m/s).