ECM Flashcard Redemption

Front

What type of bond is formed between a metal and a non-metal?

Back

Ionic bond.

Front

What is a valence electron?

Back

Electrons in the outermost energy level of an atom.

Front

What charge does an atom have if it gains two negative electrons?

Back

-2.

Front

What does the octet rule state about valence electrons?

Back

Most elements need 8 valence electrons to be stable.

Front

What is the charge of a sodium ion (Na+) after it loses one electron?

Back

+1.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the significance of the atomic number?

Back

It represents the number of protons in an atom and determines the element's identity.

Front

What is a molecule?

Back

A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Front

What is the formula for water?

Back

H₂O.

Front

What is an ion?

Back

An atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.