8-1 Ionic / Covalent bonding

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

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

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 

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

Which of these are an ion?

• 3 protons, 3 neutrons, 3 electrons.

• 8 protons, 8 neutrons, 8 electrons

• 2 protons, 3 neutrons, 2 electrons

• 6 protons, 6 neutrons, 7 electrons

Tags

NGSS.HS-PS1-1

Covalent compounds

• Share electrons
• transfer electrons
• None
• conduct electricity

Tags

NGSS.HS-PS1-2

What elements generally make an ionic bond?

• metal and nonmetal
• 2 nonmetals
• metal
• none of the above

Tags

NGSS.HS-PS1-1

What elements generally make a covalent bond?

• metal and nonmetal
• 2 nonmetals
• metal
• none of the above