Free Printable Unit 3A

Worksheets

Unit 3A

Total questions: 40

Worksheet time: 1hrs 22mins

Name

Class

Date

Substance that dissolves the solute. (a)

Choose from the below words

solution

solvent

saturation

If a spoonful of sugar is mixed in a glass of water, what is the water called? (a)

Choose from the below words

solute

solution

solvent

element

Sugar water is a (a)

Choose from the below words

solution

suspension

colloid

Milk is a (a)

Choose from the below words

solution

suspension

colloid

A mixture made of parts that separate upon standing is what type of mixture? (a)

Choose from the below words

suspension

solution

alloy

colloid

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

In this mixture, which of the following will be the solute?

The water in the glass

The glass that holds the final mixture

The solution containing both powder and water

The powder on the spoon

How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide?

6 L

0.223 L

0.166 L

2.4 L

How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL? (a)

Choose from the below words

1074 mol

0.069 mol

1.07 mol

62.7 mol

10.

Which sweet tea would you expect to taste the sweetest? (a)

Choose from the below words

3.1M

2.5M

11.

What volume of 1.50 M KBr can be made from 15.6 mL of concentrated KBr with a molarity of 9.65 M? (a)

Choose from the below words

150. mL

151 mL

1.00 L

100. mL

12.

Calculate the molarity of the following solution: 1.0 mole of KCl in 750.0 mL of solution. (a)

Choose from the below words

0.750 M

99 M

1.3 M

2.0 M

13.

Which of the following is a base? (a)

Choose from the below words

orange juice

water

vinegar

dishwashing detergent

14.

Which of the following is an acid? (a)

Choose from the below words

shampoo

baking soda

orange juice

water

15.

The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?

16.

Pure water has a pH of 7. Pure water (a) .

Choose from the below words

is a base

is a neutral substance

could be either an acid or a base

is an acid

17.

If an electrical current can run through a solution, it is said to contain (a)

Choose from the below words

magic

nonelectrolytes

electricity

electrolytes

18.

The "like dissolves like" rule is the reason why water cannot dissolve (a)

Choose from the below words

salt

sugar

vinegar

oil

19.

The pH scale is a range from: (a)

Choose from the below words

1-7

0-14

1-14

1-20

20.

A(n) (a) is a substance with a pH greater than 7.

Choose from the below words

Base

Acid

Buffer

Water

21.

A solution with a pH of 3.6 would be (a)

Choose from the below words

Acid

Base

Neutral

Acid and Base

22.

What is true when acids and bases neutralize each other. Choose all that apply

The concentration of H+ and OH- is the same

Salt Water is produced

[H⁺] = [OH^-]

[H⁺] > [OH^-]

23.

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

Both of the solution are Bases

Both of the solution are Acids

The Baking soda is an acid and the Bleach is a base

The baking soda is a base and the Bleach is an Acid.

24.

Sugar water is a (a)

Choose from the below words

solution

suspension

colloid

25.

Milk is a (a)

Choose from the below words

solution

suspension

colloid

26.

Italian dressing is a (a)

Choose from the below words

solution

suspension

colloid

27.

What type of mixture separates upon standing? (a)

Choose from the below words

Solution

Alloy

Colloid

Suspension

28.

What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution? (a)

Choose from the below words

0.018 M

0.0011 M

1.052 M

0.062 M

29.

How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)? (a)

Choose from the below words

0.625 g NaCl

625 g NaCl

36.5 g NaCl

0.04 mol NaCl

30.

Find the molarity of 186.55 g of sucrose, C12H22O11 (MM = 342) in 250 mL of water. (a)

Choose from the below words

2.18 M

0.746 M

1.18 M

0.545 M

31.

If the [H+] of a solution is 1 x 10^-2 mol/L the pH is

32.

If the pH of a solution is 5 the [H+] is (a)

Choose from the below words

1.0 x 105 M

1.0 x 109 M

5.0 x 101 M

1.0 x 10-5 M

33.

If the pH of a solution is 5.6 the pOH is

8.4

19.6

0.0056

34.

A pH and a pOH will add up to:

1.0 x 10¹⁴

35.

If the [OH-] of a solution is 2.7 x 10^-4 mol/L the pOH of the solution is

3.56

3.44

4.56

6.65

36.

Limes have a [H₃O⁺] of 1.3 x 10^-2 mol/L. Their pOH is

1.99

13.22

12.11

2.99

37.

Which pair has the same empirical formula?

NaCrO₄ and Na₂Cr₂O₇

C₂H₄O₂ and C₆H₁₂O₆

C₃H₆O₃and C₂H₆O₂

CH₄ and C₂H₆

38.

A formula with the lowest whole # ratio of elements in a compound is called

Molecular Formula

Chemical Formula

Empirical Formula

Distance Formula

39.

Which one is the empirical formula?

C₄H₆

CH₃

C₂H₃

C₄H₆

40.

A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?

Mg₄N₃

MgN₂

Mg₃N₂

MgN

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Unit 3A

Total questions: 40

Worksheet time: 1hrs 22mins

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