Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded together. An example is beach sand.

Front

What information is needed to calculate velocity?

Back

To calculate velocity, you need distance, time, and direction.

Front

How can you identify a chemical change?

Back

A chemical change can be identified when a new substance is formed.

Front

What is the formula to calculate acceleration?

Back

Acceleration = Force / Mass.

Front

If a car has a mass of 2,000kg and it takes 10,000N of force to move, what is its acceleration?

Back

5m/s².

Front

How many atoms of oxygen are in one molecule of NaHCO₃?

Back

There are 3 atoms of oxygen in one molecule of NaHCO₃.

Front

What is the definition of velocity?

Back

Velocity is the speed of an object in a specific direction.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into new substances with different properties.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.