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Safety and Measurements - Honors Chemistry

Total questions: 45

Worksheet time: 27mins

Name
Class
Date
1.
What should you do if you break glass in the lab?
a)
Tell the teacher, sweep up the glass, and put it in the broken glass container
b)
Tell the teacher, sweep up the glass, and dump it into the garbage
c)
Pick up the glass with your hands
d)
Ignore it; the teacher will clean it up
2.
You notice a beaker half full of a leftover powdered chemical and you are pretty sure you know which chemical it is.  You should
a)
Ask the teacher what to do with the chemical
b)
Pour the chemical back into the container you think it came from
c)
Pour the chemical into the garbage can
d)
Pour the chemical down the drain with the water running
3.

When should goggles be worn in the lab?

a)

At all times during a lab

b)

Only when you are close to fire

c)

When you forget your glasses

d)

Only when it matches your outfit

4.

Which items of clothing are not safe in a science lab?

a)

Open toe shoes

b)

Closed toe shoes

c)

Long hair not tied up

d)

Goggles

e)

Lab apron

5.
The triple beam balance tool measures what 
a)
Mass
b)
Temperature
c)
Volume
d)
Capacity
6.
What is measured with a graduated cylinder?
a)
Passage of time
b)
Distance from one thing to another
c)
Weight of an object
d)
Volume of liquid
7.

The density of an object can be determined by....

a)

dividing the mass by it's volume (D=m/v)

b)

dividing the volume by it's mass (D=v/m)

c)

multiplying the volume by it's mass (D=V x m)

d)

multiplying the mass by it's volume (D=m x V)

8.

Grams is the base unit for....

a)

Mass

b)

Length

c)

Temperature

d)

Time

e)

Volume

9.

What is the mass of the object?

a)

175.7 grams

b)

77 grams

c)

77.5 grams

d)

7.5 grams

10.

What is the reading on the graduated cylinder?

a)

30.5 ml

b)

3.5 ml

c)

3.05 ml

d)

35 ml

11.

A scientist was asked to present his research at a national conference. What step of the scientific method is the scientist performing at the conference?

a)

He is drawing conclusions.

b)

He is communicating his results.

c)

He is making an observation.

d)

He is completing an experiment.

12.

Which of the following does NOT help to build our scientific knowledge and improve?

a)

Asking new questions and re-checking old information

b)

Discovering new information

c)

Cashiers collecting money at a register

d)

The invention of new technology

13.

What is the independent variable in the following hypothesis?

HYPOTHESIS: "If I spend less time studying, then my grades in science will go down."

a)

Improvement in grades

b)

Playing music while studying

c)

Studying in different locations

d)

Time spent studying

14.

What is the mass of the rock shown on the triple beam balance?

a)

354.6g

b)

355g

c)

350g

d)

355.5

15.

How many meters are in 32 cm?

a)

320 m

b)

3.2 m

c)

0.32 m

16.

How many milligrams are in 0.022 grams?

a)

0.22 mg

b)

2.2 mg

c)

22 mg

d)

220 mg

17.

What is the correct product of 250/ 12.50 =

a)

20

b)

20.

c)

20.0

18.

How many significant figures is the following number: 0.00290

a)

2

b)

3

c)

5

d)

6

19.

What is the correct product of 190 - 35.88=

a)

154.12

b)

154.1

c)

154

d)

150

20.

Kelvin is a measure of ________ in chemistry

a)

distance

b)

volume

c)

mass

d)

temperature

e)

amount of a substance

21.

Which of the following is 29,000 expressed correctly in scientific notation?

a)

2.9 x 104

b)

2.9 x 10-4

c)

2.9000 x 104

d)

2.9000 x 10-4

22.

Leslie tested if plants grew towards red light better than white light.


What is the dependent variable in the experiment described above?

a)

The location of the plants

b)

The red light

c)

The white light

d)

The direction of plant growth

23.

The scientist measured the height of the plant daily and graphed the results. This could be called

a)

a hypothesis

b)

data

c)

a control

d)

a constant

24.
How should we read the graduated cylinder? Check all that apply
a)
from the top of the meniscus
b)
from the bottom of the meniscus
c)
Figure out the scale of the G.C.
d)
Read it at eye level.
e)
with the G.C. on a level surface
25.

What should be your first step before you mass an object?

a)

Move the 100 g slider first

b)

Move the 10 gram slider first

c)

Zero the Triple Beam Balance

d)

Move the smallest slider first

26.

How much mass is this?

a)

536.8 g

b)

356.8 g

c)

536.3 g

d)

538.6 g

e)

358.6 g

27.

Which zero's always count for significant figures?

a)

Leading Zero's

b)

Trailing Zero's

c)

Captive Zero's

d)

All the Zero's

28.

Which zero's never count for significant figures?

a)

Leading Zero's

b)

Trailing Zero's

c)

Captive Zero's

d)

All the Zero's

29.

Which zero's sometimes count for significant figures?

a)

Leading Zero's

b)

Trailing Zero's

c)

Captive Zero's

d)

All the Zero's

30.

How many significant figures in 20.3400

a)

4

b)

6

c)

5

d)

2

31.

Record the following in cm

a)

1.0

b)

1.2

c)

1.25

d)

1.250

e)

1.30

32.

25,000,000 + 26,000.02

a)

25,026,000.02

b)

25,026,000

c)

26,000,000

d)

25,000,000

33.

Given: 65.2g and 1.56g/mL calculate volume.

a)

41.78mL

b)

42mL

c)

41mL

d)

41.8mL

34.

Given 25.2g and 10.34mL calculate density.

a)

2.4g/mL

b)

2.43g/mL

c)

2.44g/mL

d)

2.437g/mL

35.

Record the following in mL

a)

24

b)

24.0

c)

24.00

d)

25.00

36.

Given 25.2g and 10.34mL calculate density.

a)

2.4g/mL

b)

2.43g/mL

c)

2.44g/mL

d)

2.437g/mL

37.

What volume would a 5.65 gram piece of aluminum take up. Aluminum's density is 2.7 g/mL.

a)

2.09 mL

b)

2.1 mL

c)

15 mL

d)

15.3 mL

38.

What density would an unknown element have if it has a volume of 23.5 mL and a mass of 49 grams.

a)

2.09

b)

0.48

c)

0.479

d)

2.1

39.
How would you write 4.3756 x 104 in standard form?
a)
437,560,000
b)
0.00043756
c)
43,756
d)
4,3756
40.
How would you write 0.0005 in scientific notation?
a)
50 x 105
b)
5 x 104
c)
5 x 103
d)
.5 x 103
41.
How would you write -5.6 x 10-3 in standard form?
a)
0.0056
b)
-5,600
c)
0.00056
d)
-0.0056
42.
Scientific Notation is made up of two number parts. The first part should be a number between 1 and 100.
a)
True
b)
False
43.
How do you write
8.317 x 106
in standard form?
a)
8, 371, 000
b)
83, 170, 000
c)
837, 100
d)
8, 317, 000
44.
Which of the following is correct scientific notation?
a)
20.35 x 104
b)
.2035 x 104
c)
2035 4
d)
2.035 x104
45.
Express the following in scientific notation:
.000457
a)
457 x 106
b)
457 x 10-6
c)
4.57 x104
d)
4.57 x 10-4

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