Chemical Bond

Valence electrons are the...

• Innermost electrons

• Middle electrons

• Outermost electrons

• Any electrons

For metals (groups 1-3), its easier to _____ electrons to have a full outer shell.

• gain

• lose

• share

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In chemical compounds, covalent bonds form when

• the electronegativity difference between two atoms is very large.

• electrons are completely transferred between two metals.

• pairs of electrons are shared between two nonmetal atoms.

• two nonmetal atoms are attracted to each other by opposite charges.

Write the correct formula for an ionic compound formed from S^2- and Rb¹⁺.

• SRb₂

• SRb

• Rb₂S

• RbS₂

Tags

NGSS.MS-PS1-1

What region of the periodic table contains atoms that form covalent bonds?

• the left side

• the middle

• the right side

• top left

Which of the following is an example of a COVALENT COMPOUND?

• H₂S

• KI

• CaCl₂

• MgO

Tags

NGSS.MS-PS1-1

What happens to the valence electrons of an atom when it is a covalent bond?

• transfers electrons

• shares electrons

• does nothing

Tags

NGSS.HS-PS1-1

This type of bond is when atoms share electrons.

• ionic

• metallic

• covalent

• polar

What happens to electrons in an ionic bond?

• they are shared equally between atoms

• both atoms in the bond lose electrons

• both atoms in the bond gain electrons

• one atom gains electrons and the other atom loses electrons

What happens to the valence electrons of an atom that uses an ionic bond?

• transfers electrons

• shares electrons

• nothing