2nd 9 weeks Test Review

The substance being dissolved is called the ________

• solvent

• solid

• solute

• solvate

When no more solute dissolves the solution is _________

• supersaturated

• unsaturated

• saturated

• supercalifragilisticexpialidocious

Gases are more soluble at ______temps and _____pressures

• high, low

• low , high

• high, high

• low, low

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

In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

• stir the powder in the liquid
• freeze the mixture
• add more powder to the liquid
• store the mixture in a dark place

Tags

NGSS.HS-PS1-5

air is a 

• compound
• element
• heterogeneous mixture
• solution

Another name for a homogeneous mixture is 

• an element.
• a solution.
• a compound.

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

Which solute is the most soluble at 10 ⁰C?

• KI
• KClO₃
• NH₄Cl
• NH₃

Tags

NGSS.MS-PS1-2

Which solute is the least soluble at 90 ⁰C?

• SO₂
• KClO₃
• KI
• HCl

Tags

NGSS.MS-PS1-2