Do Now 3/17

What is water?

• An atom
• A molecule composed of 2 parts Oxygen and one part Hydrogen
• A molecular compound composed of 2 parts Hydrogen and one part Oxygen
• A pure substance composed of 2 parts Hydrogen and one part Oxygen

What is the chemical formula for water?

• H02

• 2ho

• H₂O₂

• H₂O

A molecule in which opposite ends have opposite electric charges is a:

• cohesion
• polar molecule
• hydrogen bond
• solution

Which of the following can water NOT dissolve?

• Salt

• Sugar

• Oil

• Baking Soda

Is the density of water ice lower, higher, or the same as liquid water?

• Lower
• Higher
• The same
• Um... what is density again