16f) FLASHCARD - Calculating Protons, Neutrons, & Electrons

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What subatomic particle has a positive charge?

Back

Proton.

Front

What subatomic particle has no charge?

Back

Neutron.

Front

What subatomic particle has a negative charge?

Back

Electron.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that determine its chemical reactivity.

Front

How do you calculate the atomic mass of an atom?

Back

Atomic mass is calculated by adding the number of protons and neutrons in the nucleus.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

Which element is in Group 1 of the Periodic Table?

Back

Lithium (Li) is in Group 1, along with other alkali metals like Cesium (Cs).

Front

What determines the reactivity of an element?

Back

The reactivity of an element is determined by its valence electrons.

Front

If an atom has 6 protons, what is its atomic number?

Back

The atomic number is 6.