CSET CSET Physical Sciences: Physics and Chemistry 3

Question 1

Which subatomic particles are found in the nucleus of an atom?

Accepted Answer

Protons and neutrons

Answer

The nucleus contains protons (positively charged) and neutrons (neutral); electrons orbit outside the nucleus.

Question 2

What is the name of the process by which liquid water changes into water vapor?

Accepted Answer

Evaporation

Answer

Evaporation is the process by which liquid water at the surface absorbs energy and changes to water vapor.

Question 3

A 10 kg object is lifted 5 meters. What is its gravitational potential energy? (g = 10 m/s²)

Accepted Answer

500 J

Answer

Gravitational PE = mgh = 10 kg × 10 m/s² × 5 m = 500 J.

Question 4

Which of the following is a chemical change?

Accepted Answer

Iron rusting

Answer

Iron rusting is a chemical change (oxidation) that produces a new substance, iron oxide, with different properties.

Question 5

Ohm's Law states that voltage (V) equals:

Accepted Answer

Current × Resistance

Answer

Ohm's Law: V = IR, where V is voltage, I is current, and R is resistance.

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