CBA Review

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances, such as rusting of iron.

Front

Give an example of a chemical change.

Back

Bike rusting.

Front

What is kinetic energy?

Back

The energy an object has due to its motion.

Front

Which object has more kinetic energy: a hot object or a cold object?

Back

The hot object.

Front

How do you calculate speed?

Back

Speed = Distance / Time.

Front

Calculate the speed of an object that travels 50 m in 25 s.

Back

2 m/s.

Front

What is a mixture?

Back

A combination of two or more substances where each retains its own properties.

Front

How can you separate sand and water?

Back

Pour through a filter paper.

Front

What is a pure substance?

Back

Made of a single element or compound; every particle is the same.

Front

What is the difference between a mixture and a pure substance?

Back

A mixture contains two or more substances that retain their properties, while a pure substance has a uniform composition.