Properties of Water

Molecules that stick to the same type of molecules.

• cohesion

• adhesion

• hydrophilic

• hydrophobic

Which of the following makes up a molecule of water?

• one atom of oxygen, two atoms of hydrogen

• one atom of hydrogen, two atoms of oxygen

• one atom of chlorine, one atom of sodium

• one atom of hydrogen, one atom of oxygen

Tags

NGSS.MS-PS1-1

Ice floats on water because

• adhesion

• cohesion

• water expands when it freezes

• water shrinks when it freezes

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When salt is dissolved in water, water is the

• solvent

• solute

• solution

• reactant

A substance with a pH of 6 is called a....

• Base

• Acid

A solution is a(an)...

• chemical reaction

• breaking of a chemical bond

• combination of two or more liquids

• evenly distributed mixture of two or more substances

Capillary action is....

• adhesion

• cohesion

• change in matter (heat of fusion)

• both adhesion and cohesion

Tags

NGSS.MS-ESS2-4

Which acid listed is the strongest acid?

• Hydrochloric acid pH 1.0

• Sulfuric acid pH 1.2

• Tomatoes pH 4.2

• Water pH 7.0

Tags

NGSS.MS-PS1-2

Which is the pH of the weakest base?

• 13
• 11.1
• 8.5
• 6.2

Does a solution with a hydrogen ion concentration less than that of pure water have a pH greater or less than 7?
Remember water break into two pieces, H+ (hydrogen ion) and -OH (hydroxide)

• Greater than
• Less than