Covalent bonds

Which of the following describes covalent bonds?

• Bonds form because of opposite charges
• Bonds form to fill outer electron shells
• Electrons are transferred between atoms
• Covalent bonds are magical

Tags

NGSS.HS-PS1-2

Protons have a charge of:

• -1
• +1
• -2
• +2

Electrons have a charge of:

• -1
• -2
• +1
• +2

Tags

NGSS.HS-PS2-4

Most atoms have no net charge because they have....

• an equal number of charged and non-charged particles
• neutrons in their nuclei
• an equal number of electrons and protons
• an equal number of neutrons and protons

What would you name this molecule?

• SNa3
• H3O
• NaCl
• H2O

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What molecule is this?

• CO
• CO2
• C2O
• C2O2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

If a you saw the following, K+; what does it tell you about the  the ion.

• it has lost one electron 
• it has lost one proton 
• it has lost two electrons 
• it is a negative ion 

Tags

NGSS.HS-PS1-1

In a covalent bond, one or more electrons are? 

• shared 
• lost 
• gained 
• transferred 

Tags

NGSS.MS-PS1-1

What does a sodium atom become when it loses its only valence electron?

• sodium compound
• sodium atom
• ionic compound
• sodium ion

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the charge of a sodium ion with 11 protons and 10 electrons?

• 1+
• 1-
• 2+
• 2-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2