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Intro to Math

Total questions: 44

Worksheet time: 30mins

Name
Class
Date
1.
How many significant figures does the following number have: 0.00204
a)
6
b)
4
c)
3
d)
2
2.

How many significant figures does the following number have?1.2500 x 10310^3  

a)
5
b)
3
c)

Ambiguous: 3 or 5

d)

7

3.
How many significant figures does the following number have: 100.00210
a)
7
b)
8
c)
10
d)
Ambiguous: 7 or 8
4.
Round 1289 to three significant figures
a)
1290
b)
130
c)
1300
d)
1.29x103
5.

What is 986.907 rounded to 2 significant figures?

a)
98.9
b)

990.

c)

1000

d)

9.9x102

6.

Which conversion factor would you use to convert from cm to inches?

a)

1 in2.54 cm\frac{1\ in}{2.54\ cm}

b)

2.54 cm1 in\frac{2.54\ cm}{1\ in}

c)

2.54 in1 cm\frac{2.54\ in}{1\ cm}

7.

Which conversion fraction would be needed?

a)
b)
8.

Which conversion factor would be needed?

a)
b)
c)
d)
9.

How many minutes are in four hours?

a)

175min

b)

280min

c)

240min

d)

325min

10.
Change from standard form to scientific notation: 12,000,000
a)
12.0  x  107
b)
0.12  x  107
c)
1.2  x  106
d)
1.2  x  107
11.
How many significant figures: 153.0 mL
a)
1
b)
2
c)
3
d)
4
12.
How many significant figures: 1000 mL
a)
1
b)
2
c)
3
d)
4
13.
You know that 12 inches = 1 foot.  Convert 60 inches to feet.
a)
720 feet
b)
5 feet
c)
5 inches
d)
72 feet
14.

What do we call the substance that is being dissolved?

a)

Solute

b)

Solvent

c)

Concentration

d)

Electrolyte

15.

What do we call the substance that is doing the dissolving?

a)

Solute

b)

Solvent

c)

Concentration

d)

Electrolyte

16.

Kool aid is the perfect refreshment on a hot summer day. What is the solvent in this delicious mixture?

a)

Kool aid

b)

Water

17.

Hot chocolate is a great treat on a cold and dreary day. What is the solvent in this delicious mixture?

a)

Hot Cocoa Mix

b)

Milk

18.

What is the universal solvent?

a)

Water

b)

Milk

c)

Salt

d)

Sugar

19.

What can be found on the y-axis of this solubility graph?

a)

grams of solute

b)

Temperature

c)

moles of solute

d)

mL of solute

20.

What can be found on the x-axis of this solubility graph?

a)

grams of solute

b)

Temperature

c)

moles of solute

d)

mL of solute

21.

Which of the following can increase the solubility of a solution?

a)

Stirring

b)

Decreasing temperature

c)

Adding more solute

d)

Evaporation

22.

The amount of solute added is below what the substance can dissolve.

a)

Saturated

b)

Supersaturated

c)

Unsaturated

d)

Nonsaturated

23.

A solution that contains more of the dissolved material than could be dissolved under normal circumstances.

a)

Saturated

b)

Supersaturated

c)

Unsaturated

d)

Nonsaturated

24.

Hot chocolate is a great treat on a cold and dreary day. What is the solute in this delicious mixture?

a)

Hot Cocoa Mix

b)

Milk

25.

Ethyl alcohol-water are examples of solvent-solute relationship.

a)

liquid-solid

b)

liquid-liquid

c)

liquid-gas

d)

None of the above

26.

Which of the following would NOT increase the rate at which a sugar cube dissolves?

a)

Reducing the amount of solvent

b)

Crushing the sugar cube

c)

Stirring the solution

d)

Heating the solvent

27.

You can make a solute dissolve more quickly in a solvent by

a)

adding more solute.

b)

adding ice.

c)

heating the solvent.

d)

removing some solvent.

28.
Which of the following would dissolve the slowest?
a)
a sugar cube in hot water
b)
a sugar cube in cool water
c)
powdered sugar in cool water
d)
powdered sugar in hot water
29.

Stirring the solution...

a)

decrease the rate of solubility

b)

Doesn't change the rate of solubility

c)

increase the rate of solubility

d)

None of the above

30.

Kool aid is the perfect refreshment on a hot summer day. What is the solute in this delicious mixture?

a)

Kool aid

b)

Water

31.

The smaller the particle size results in a....

a)

increase in solubility

b)

decrease in solubility

c)

decrease in surface area

d)

increase in bond strength

32.
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?

a)
stir the powder in the liquid
b)
freeze the mixture
c)
add more powder to the liquid
d)
store the mixture in a dark place
33.

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

a)

300 grams

b)

250 grams

c)

100 grams

d)

50 grams

34.
You can make a solution more concentrated by adding __________.
a)
solute
b)
solvent
c)
water
35.

Which of the following is an example of a solvent?

a)

sugar

b)

salt

c)

copper sulphate

d)

water

36.

A measurement is something that has both a number and a ______

a)

Unit

b)

Symbol

c)

Number

37.

The unit for mass is...

a)

Newton

b)

grams

c)

mililiters

d)

centimeters

38.

What is this tool called....

a)

Ruler

b)

Thermometer

c)

Beaker

d)

Graduated Cylinder

39.

A graduated cylinder is used to measure...

a)

Volume

b)

mass

c)

weight

d)

density

40.

The unit for volume is. (there is more than one right answer)

a)

grams

b)

milliliters (mL)

c)

Newton

d)

Centimeters Cubed

41.

 

What two types of measurements make up DENSITY? 

a)

Volume and Weight

b)

Temperature and Mass

c)

Mass and Volume

42.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup 
d)
plastic bottle
43.

What is the density of water?

a)

34 g/mL

b)

1 g/mL

c)

29 g/mL

d)

6 g/mL

44.

What is the unit for density ?

a)

g/ mL

b)

g

c)

gcm3\frac{g}{cm^3}  

d)

cm4cm^4  

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