MTTC Physical Science 3

Question 1

Which of the following is an example of a physical property of matter?

Accepted Answer

Density

Answer

Flammability

Answer

Reactivity with acid

Answer

Ability to rust

Question 2

What is the atomic number of an element?

Accepted Answer

The number of protons in the nucleus

Answer

The number of neutrons in the nucleus

Answer

The total number of protons plus neutrons

Answer

The mass of one atom in grams

Question 3

A ball thrown horizontally off a cliff will land farther from the base if it is thrown:

Accepted Answer

With greater horizontal speed

Answer

With greater mass

Answer

With less horizontal speed

Answer

At a downward angle

Question 4

Which state of matter has a definite volume but no definite shape?

Accepted Answer

Liquid

Answer

Solid

Answer

Gas

Answer

Plasma

Question 5

A teacher uses a tuning fork and a glass of water to show that sound creates vibrations. This activity best demonstrates which concept?

Accepted Answer

Sound as a mechanical wave requiring particle vibration

Answer

Light refraction

Answer

Buoyancy and displacement

Answer

Static electricity

Question 6

What is the difference between an atom and a molecule?

Accepted Answer

An atom is the smallest unit of an element; a molecule is two or more atoms bonded together

Answer

A molecule is a single particle; an atom is a group of molecules

Answer

Atoms only exist in metals; molecules exist in non-metals

Answer

A molecule has protons; an atom does not