Covalent bonds are between...

• a metal and a nonmetal

• a nonmetal and another nonmetal

• a metal and another metal

• any types of elements

Tags

NGSS.HS-PS1-2

Ionic bonds are between...

• a metal and a nonmetal

• a nonmetal and another nonmetal

• a metal and another metal

• any types of elements

Tags

NGSS.HS-PS1-2

Atoms are most stable when their outer electron level is complete.

• true

• false

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How are covalent bonds formed?

• by atoms sharing some of their electrons

• by electron transfer from one atom to another

• by atoms exchanging electrons

• by atoms hanging out together

Tags

NGSS.HS-PS1-2

How are ionic bonds formed?

• by atoms sharing some of their electrons

• by electron transfer from one atom to another

• by atoms exchanging electrons

• by atoms hanging out together

Tags

NGSS.HS-PS1-2

Does hydrogen behave more like a metal or a non-metal when it bonds with other elements?

• A metal

• Nonmetal

• Metalloid

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why do elements bond?

• to become friends

• to create a new element

• to become stable

• to reduce the number of atoms

Which type of bonding does this diagram represent?

• covalent

• ionic

• metallic

• none of these

Tags

NGSS.HS-PS1-3

Objects that have opposite charges will

• repel each other

• attract each other

• push away from each other

• avoid each other

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

What is a valence electron?

• The same as the number of protons.

• The electrons in the outermost energy level.

• A type of chemical bond.

• An electron closest to the atomic nucleus.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2