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Chemistry and Measuring

Total questions: 35

Worksheet time: 43mins

Name
Class
Date
1.

This instrument is used for accurately dispensing known volume of liquids

a)

Erlenmeyer Flask

b)

graduated cylinder

c)

beaker

d)

test-tube

2.

Used to determine the weight

a)

electronic balance

b)

measuring cylinder

c)

magnetic stirrer

d)

beaker

3.

The squeezable plastic bottle used to do final rinses of equipment is filled with

a)

tap water.

b)

distilled water.

c)

pH 9 water.

d)

acid.

4.

It is worn to protect the eyes during the experiment and must be worn at all times

a)

goggles

b)

sun glasses

c)

lab coat

d)

gloves

5.

If an object's mass is 60 g, and its volume is 20 cm3, what is its density?

a)

3 g/cm3

b)

5 g/cm3

c)

60 g/cm3

d)

33 g/cm3

6.
_______________ is the amount of space an object takes up.
a)
mass
b)
volume
c)
weight
d)
density
7.
Mass is measured in
a)
grams
b)
liters
c)
meters
d)
g/cm3
8.
The SI base units for time and temperature are
a)
hour and degree Celsius.
b)
second and degree Celsius.
c)
hour and kelvin.
d)
second and kelvin.
9.

What does SI stand for in the scientific measurement system?

a)

System Influence

b)

System International

c)

Systemic International

d)

Silly Increments

10.
In the event of any lab emergency, who do you notify?
a)
nurse
b)
instructor
c)
friends
d)
principal
11.
Injuries and accidents should be reported:
a)
immediately
b)
only if serious
c)
in a few minutes
d)
at the end of the block
12.
When you conduct experiments in the lab, long hair should be:
a)
cut off
b)
held back with both hands
c)
combed nicely
d)
 confined
13.

While working in the science lab, all loose clothing and bulky jewelry must be

a)

removed.

b)

left on.

c)

made of non flammable materials.

d)

placed on the table.

14.

When you are in the lab, you should wear

a)

bulky sweatshirts.

b)

dangling jewelry.

c)

open toe shoes.

d)

closed toe shoes.

15.
In the event of broken equipment, what should you do?
a)
stop using the equipment and report it immediately
b)
continue using the equipment and report it immediately
c)
stop using the equipment and report it later
d)
continue using the equipment and report it later
16.

Name the Figure

a)

Pipette

b)

Beaker

c)

Funnel

d)

None of These

17.

A sample of bismuth has a mass of 375 g and a volume of 35.0 cm3.What is the density of bismuth?

a)

0.102 g/cm3

b)

10.70 g/cm3

c)

378 g/cm3

d)

1.20 104 g/cm3

18.

One example of a chemical change is

a)

filtering

b)

burning wood

c)

boiling water

d)

crushing a can

19.

Table sugar and table salt are examples of

a)

atoms

b)

elements

c)

mixtures

d)

pure substances

20.

Substances that CANNOT be broken down chemically into other substances are

a)

elements

b)

compounds

c)

mixtures

d)

solutions

21.

Anything that has mass and takes up space is called

a)

matter

b)

energy

c)

heterogeneous

d)

homogeneous

22.

How would you calculate the density of an object?

a)

divide its weight by its volume

b)

divide to mass by its volume

c)

multiply its volume times its mass

d)

multiply its weight times its mass

23.

Chemistry is a branch of science which deals with:

a)

study of plants

b)

production of better seeds

c)

mineral protecting

d)

study of composition of substances

24.

A measuring cylinder is used to measure the volume of a liquid. What is the volume of the liquid?

a)

43 cm3

b)

46 cm3

c)

48 cm3

d)

54 cm3

25.

How close a measurement is to the accepted value is called..

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

26.
When a measurement is repeatable and consistent it is said to have...
a)
High precision
b)
Low precision
c)
High accuracy
d)
Low accuracy
27.
The students measured length during a science experiement, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?
a)
15.79%
b)
18.75%
c)
2.25%
d)
18%
28.
Volume?
a)
63.5 mL
b)
63 mL
c)
63.55 mL
d)
6 mL
29.
An irregularly-shaped sample of aluminum (Al) is put on a balance and found to have a mass of 43.6 g.  The student decides to use the water-displacement method to find the volume.  The initial volume reading is  25.5 mL and, after the Al sample is added, the water level has risen to 41.7 mL.  Find the density of the Al sample in g/cm3.  (Remember:  1 mL = 1 cm3.)
a)
1.7 g/mL
b)
1.05 g/mL
c)
0.65 g/mL
d)
2.7 g/mL
30.
A set of data are all close to each other, and they are close to the actual value.  This set of data can be described as...
a)
accurate
b)
precise
c)
both precise and accurate
31.
a)

wire gauze

b)

Bunsen burner

c)

thermometer

d)

utility clamp

32.

Which of these pieces of equipment is beaker?

a)
b)
c)
d)
33.

Which piece of equipment should be used to hold a hot test tube?

a)
b)
c)
d)
34.

When scientists observed LARGE quantities of CFCs in Earth's atmosphere in the 1970s, what correlation emerged?

a)

The protective ozone layer is thinning due to large quantities of CFCs in the atmosphere.

b)

The protective ozone layer is thickening due to large quantities of CFCs in the atmosphere.

c)

The protective ozone layer was not affected by the large quantities of CFCs in the atmosphere.

35.
The ozone layer protects us from
a)
UV rays
b)
CFCs
c)
Increased atmospheric heat
d)
Decreased atmospheric heat

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