covalent and ionic bonds

How many valence electrons are elements trying to reach in their outer shells?

• 1
• 2
• 5
• 8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What type of elements will form an ionic bond?

• Metals + Metals
• Nonmetals + Nonmetals
• Metals + Nonmetals
• None of the above

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

When two atoms share electrons, a chemical bond is formed. This type of bond is called:

• covalent bond

• ionic bond

• crystal bond

• polyatomic bond

In order for sulfur to reach an octet, sulfur will...

• Gain 2 electrons

• Lose 2 electrons

• Gain 1 electron

• Lose 1 electron

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What usually forms the positive ion?

• Metal

• Non Metals

• None

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What usually forms the negative ion?

• nonmetals

• metal

• none

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Covalent compounds

• Share electrons

• transfer electrons

• contain a sea of electrons

• conduct electricity

Tags

NGSS.HS-PS1-2

Which of the following is NOT formed by a covalent bond?

• K₂S
• H₂O
• I₂
• CO₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How are covalent bonds explained?

• When one atom takes the other atom's electron
• When the atom shares an electron with an another atom
• When the two nucleus merge
• When the neutrons leave the nucleus

Tags

NGSS.HS-PS1-2

A covalent bond in which electrons are shared unequally is:

• polar
• a double bond
• ionic
• polyatomic