12/24: Basic Chemistry Flashcard for Honors Biology

Front

Atoms are neutral so the number of protons must be equal to the number of _____?

Back

Electrons

Front

The subatomic particle that determines the identity of the atom is? (this # will NEVER change)

Back

Proton

Front

How many valence electrons does Phosphorus have?

Back

5

Front

What are ions?

Back

Atoms with a positive or negative charge.

Front

What is the charge of an atom that has gained two electrons?

Back

2-

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the role of electrons in chemical bonding?

Back

Electrons in the outer shell (valence electrons) are involved in forming bonds between atoms.

Front

What is a covalent bond?

Back

A bond formed when two atoms share one or more pairs of electrons.