NCFE Physical Science Practice

Front

What is the reactivity series of metals?

Back

The reactivity series is a list of metals arranged in order of decreasing reactivity. More reactive metals can displace less reactive metals from compounds.

Front

Which metal is more reactive than magnesium?

Back

Calcium is more reactive than magnesium.

Front

What is frequency in the context of waves?

Back

Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz). Higher frequency means more energy.

Front

Which type of wave has the highest frequency: visible light, ultraviolet, or x-rays?

Back

X-rays have the highest frequency among these options.

Front

What is displacement in physics?

Back

Displacement is the shortest distance from the initial to the final position of an object, including direction.

Front

If Bob walks 2 blocks east, 4 blocks south, and 2 blocks west, what is his total displacement?

Back

Bob's total displacement is 4 blocks south.

Front

What happens to molecules during a phase change?

Back

During a phase change, energy is either absorbed or released, causing molecules to overcome or strengthen intermolecular attractions.

Front

What is the role of energy in breaking chemical bonds?

Back

Energy is required to break chemical bonds, which allows molecules to change their structure.

Front

What are intermolecular attractions?

Back

Intermolecular attractions are forces that occur between molecules, affecting their physical properties.

Front

What type of wave can travel through a vacuum?

Back

Electromagnetic waves can travel through a vacuum.