FREE AFCT General Science: Physical and Chemical Questions and Answers

Question 1

According to Newton's First Law of Motion, an object in motion will stay in motion unless acted upon by what?

Accepted Answer

An unbalanced force

Answer

An equal and opposite reaction

Answer

Its own inertia

Answer

A constant velocity

Question 2

The process by which a substance changes directly from a solid to a gas is called what?

Accepted Answer

Sublimation

Answer

Evaporation

Answer

Condensation

Answer

Deposition

Question 3

What form of energy is associated with the motion of an object?

Accepted Answer

Kinetic energy

Answer

Potential energy

Answer

Chemical energy

Answer

Thermal energy

Question 4

What are the three primary subatomic particles that make up an atom?

Accepted Answer

Protons, Neutrons, and Electrons

Answer

Protons, Neutrinos, and Electrons

Answer

Ions, Neutrons, and Electrons

Answer

Protons, Neutrons, and Isotopes

Question 5

In an electrical circuit, what is the primary function of a resistor?

Accepted Answer

Impedes the flow of current

Answer

Stores electrical charge

Answer

Increases the flow of current

Answer

Measures the voltage

Question 6

A substance with a pH of 2 is considered to be what?

Accepted Answer

Acidic

Answer

Basic

Answer

Neutral

Answer

Saline