Solutions 10(A), 10(B), 10(E)

Water is often called the "universal solvent" because many substances can be dissolved in water. What property of water allows it to be such a versatile solvent? 

• purity
• polarity and cohesion
• high heat capacity
• expansion upon freezing

Water is "sticky" because...

• of cohesion.

• of adhesion.

• of the attraction between the positively charged hydrogen atoms and the negatively charged oxygen atom.

• of capillary action.

Tags

NGSS.MS-PS1-1

A hydrogen atom in a water molecule will be attracted to the _____________ atom of another water molecule. 

• oxygen
• hydrogen
• nitrogen
• positive 

a solute whose water solution conducts electricity is called a(n)

• nonconductor
• electrolyte
• nonelectrolyte
• aqueous solution

What is a solute?

• The substance that does the dissolving in a solution.
• The substance that is dissolved into the solution.
• The mixing of different substances.
• The process in which neutral molecules lose or gain electrons

What is a solvent?

• The substance that does the dissolving in a solution.
• The substance that is being dissolved in a solution.
• The mixing of different substances.
• The process in which neutral molecules lose or gain electrons

How many grams of K₂Cr₂O₇, are soluble in 100 g of water at 95 ºC?

• 83 grams
• 75 grams
• 40 grams
• 12 grams

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

Which substance is MOST soluble at 0 ºC?

• KI
• NaNO₃
• NaCl
• Ce₂(SO₄)₃

Tags

NGSS.HS-PS1-5

Which solute is the least soluble at 90 ⁰C?

• SO₂
• KClO₃
• KI
• HCl

Tags

NGSS.MS-PS1-4

If you stir a solute into a solvent, resulting in a lot of solute settling on the bottom, then the solution can be described as...

• saturated

• unsaturated

• super saturated