Middle School Chemistry

Front

What is density?

Back

Density is the mass of an object divided by its volume. It indicates how much matter is packed into a given space.

Front

What happens to the density of an object if its mass increases while its volume remains the same?

Back

The density increases.

Front

What is the charge of a neutron?

Back

A neutron has no charge.

Front

Where are neutrons located in an atom?

Back

Neutrons are located in the nucleus of the atom.

Front

What makes a water molecule polar?

Back

A water molecule is polar because oxygen has a stronger attraction for electrons than hydrogen.

Front

What is conduction?

Back

Conduction is the process where fast-moving particles transfer energy to slower-moving particles.

Front

What happens to the pH of a solution when it becomes more acidic?

Back

The pH number decreases.

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic).

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are the three main subatomic particles in an atom?

Back

The three main subatomic particles are protons, neutrons, and electrons.