Physical Science Practice Exam

Front

What is work in physics?

Back

Work is defined as the product of force and the distance over which it is applied. It is measured in joules (J).

Front

How do you calculate work done?

Back

Work done (W) = Force (F) x Distance (d).

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more reactants combine to form a single product.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the components are not uniformly distributed, and different parts can be easily distinguished.

Front

What does Newton's 3rd law of motion state?

Back

For every action, there is an equal and opposite reaction.

Front

What is a Bohr model?

Back

The Bohr model is a representation of an atom that depicts electrons orbiting the nucleus in defined paths.

Front

What is the significance of the force in the work formula?

Back

The force must be applied in the direction of the movement for work to be done.

Front

What is the difference between a homogeneous and heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has distinct, separate components.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force is the Newton (N).

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up a chemical reaction without being consumed in the process.