Unit 7 Review

You place electrodes in a solution and this happens! This solution must be:

• electrolyte & ionic bond
• electrolyte & covalent bond
• nonelectrolyte & ionic bond
• nonelectrolyte & ionic bond

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-5

At 40 ^oC and 50 g, the solution of KCl would be:

• saturated

• supersaturated

• unsaturated

At 40 ^oC and 20 g, the solution of KCl would be

• saturated

• supersaturated

• unsaturated

A way to increase the amount of sugar dissolved in tea is to

• crush and cool
• crush and leave alone
• crush and heat

Tags

NGSS.MS-PS3-4

For a gas, solubility will increase if _____ increases.

• Pressure
• Temperature
• Aggitation

If you add more sugar to tea eventually the sugar will fall out of the solution. To check if your solution is staturated you must

• stir the solution

• increase the temperature

• filter out the crystals

Calculate the molarity of 25.0 grams of KBr dissolved in 0.75 L (hint: find moles convert to grams)

• 0.280 M
• 0.210 M
• 33.3 M

How many moles of solution will result when 15.0 L of H₂SO₄ is used to make a 0.20 M solution?

• 75 moles

• 7 moles

• 3 moles

• 0.013 moles

Convert 3000 mL into L.

• 3000 L
• 300 L
• 30 L
• 3 L

What is the molarity of a solution containing 8.0 moles of solute in 500 mL of solution?

• 0.016 M
• 16 M
• 62.5 M
• 0.063 M