Coffin- Flashcard on Intro to Atoms and Molecules

Front

What is an atom?

Back

An atom is the basic unit of a chemical element, consisting of a nucleus surrounded by electrons.

Front

What are the three main subatomic particles of an atom?

Back

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

Front

What charge does a neutron have?

Back

A neutron has no charge.

Front

What charge does a proton have?

Back

A proton has a positive charge.

Front

What charge does an electron have?

Back

An electron has a negative charge.

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What are diatomic elements?

Back

Diatomic elements are molecules composed of two atoms, which can be of the same or different chemical elements.

Front

List some examples of diatomic elements.

Back

Examples of diatomic elements include nitrogen (N2), oxygen (O2), hydrogen (H2), fluorine (F2), chlorine (Cl2), bromine (Br2), and iodine (I2).

Front

How do you determine the number of protons in an atom?

Back

The number of protons in an atom is equal to the atomic number of the element.

Front

What is the significance of protons in an atom?

Back

Protons determine the identity of an element and its position on the periodic table.