atoms, elements, molecules, compounds

Front

What is the charge of protons in an atom?

Back

Protons have a positive charge.

Front

What is the smallest unit of matter that retains the properties of an element?

Back

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

Front

What do we call a group of two or more atoms bonded together?

Back

A molecule is formed when two or more atoms bond together.

Front

Is every molecule a compound?

Back

No, not every molecule is a compound. A compound is a specific type of molecule that contains at least two different elements.

Front

What is the term for a substance made of two or more different elements chemically bonded together?

Back

A compound is a substance made of two or more different elements chemically bonded together.

Front

What are the three main subatomic particles in an atom?

Back

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

Front

What is the charge of electrons in an atom?

Back

Electrons have a negative charge.

Front

What is the nucleus of an atom composed of?

Back

The nucleus of an atom is composed of protons and neutrons.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the term for the number of protons in the nucleus of an atom?

Back

The atomic number is the number of protons in the nucleus of an atom.