Front

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

Back

-2

Front

What is a valence electron?

Back

The number of electrons in the outermost shell of an atom.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What type of bond is formed between a metal atom and a nonmetal atom?

Back

Ionic bond.

Tags

NGSS.HS-PS1-1

Front

What type of bond is formed between two nonmetal atoms?

Back

Covalent bond.

Tags

NGSS.HS-PS1-1

Front

Which of the following is NOT a covalent bond: H2, O2, K2S?

Back

K2S.

Tags

NGSS.HS-PS1-3

Front

What is the definition of an ionic bond?

Back

A bond formed through the transfer of electrons from one atom to another, resulting in the attraction between oppositely charged ions.

Tags

NGSS.HS-PS1-3

Front

What is the definition of a covalent bond?

Back

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

Front

What is the octet rule?

Back

Atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What is the difference between polar and nonpolar covalent bonds?

Back

Polar covalent bonds have unequal sharing of electrons, while nonpolar covalent bonds have equal sharing of electrons.

Front

What is electronegativity?

Back

The tendency of an atom to attract electrons in a chemical bond.

Tags

NGSS.HS-PS1-1