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UNIT 1&2 TEST

Total questions: 50

Worksheet time: 2hrs 30mins

Name
Class
Date
1.
40 cm = ______ mm
( 1 cm = 10 mm)
a)
4000
b)
40
c)
400
d)
None of the Above
2.
200 mm = ____ cm
(1 cm = 10 mm)
a)
20 mm
b)
20 km
c)
20 cm
d)
20 dm
3.
900 cm ____ 9000 mm
(1 cm is 10 mm)
a)
<
b)
=
c)
>
4.
18,000 g ____ 10 kg
(1 kg is 1000 g)
a)
<
b)
=
c)
>
5.
Convert 17 m to cm:
(1 m = 100 cm)
a)
0.17 cm
b)
0.017 cm
c)
1,700 cm
d)
170 cm
6.
1000 grams = _____ kilograms
a)
0.0001
b)
1,000,000
c)
10
d)
1
7.
Convert 300 cm to m:
(100 cm = 1 m)
a)
3 m
b)
30 m
c)
0.3 m
d)
0.03 m
8.
1 L = _______ mL
a)
1
b)
10
c)
100
d)
1000
9.
7,000 g = ____ kg
(1 kg = 1000 g
a)
70
b)
7000
c)
7
d)
0.07
10.
15,000 g = ____ kg
(1000 g = 1 kg)
a)
1.5
b)
150
c)
1,500
d)
15
11.
500 cm = ________ m
(1 m is 100 cm)
a)
5
b)
50
c)
500
d)
5000
12.
Convert 15 m to cm
(1 m = 100 cm)
a)
0.15 cm
b)
1.5 cm
c)
150 cm
d)
1,500 cm
13.
240 cm = ___________ m
a)
2400
b)
24
c)
2.4
d)
0.24
14.
 68 cm = ___________ mm
a)
0.68
b)
6.8
c)
68
d)
680
15.
Which unit is the smallest?  
a)
km
b)
mm
c)
m
d)
cm 
16.
Convert 17 m to cm:
a)
0.17 cm
b)
0.017 cm
c)
1,700 cm
d)
170 cm
17.
1000 m = ___________ km
a)
100
b)
10
c)
1
d)
0.1
18.
A possible explanation to a problem that has not yet been tested. 
a)
data
b)
theory
c)
hypothesis
d)
fact
19.
The summary at the end of an experiment that explains the results. 
a)
conclusion
b)
procedures
c)
materials
d)
responding variable
20.

What is an observation?

a)

A scientific statement based on ideas

b)

Using your senses to notice what is going on around you

c)

To be unaware of your surroundings

d)

The question that you want an answer to.

21.
A testable answer to a scientific question
a)
Question
b)
Observation
c)
Hypothesis
d)
Experiment
22.
This is the last step in the scientific method
a)
Draw a conclusion
b)
Record your data as results
c)
Share what you have learned with others
d)
Collaborate with others
23.
A series of steps used by scientists to solve a problem or answer a question. 
a)
scientific method
b)
recipe
c)
data collection
d)
metric system
24.
Which is NOT a step in the scientific method?
a)
Make observation
b)
Form a theory
c)
Collect data
d)
Form a hypothesis
25.
A hypothesis is simply a prediction that has not yet been _.
a)
proven or disproven
b)
made into a theory
c)
results calculated
d)
written about
26.
Should experiments be repeated over and over to see if the results are the same each time?
a)
yes
b)
no
27.
Testing a hypothesis often involves a(n):
a)
answer
b)
experiment
c)
problem
d)
safety check
28.

The information you collect while doing your experiment is called

a)

conclusions

b)

data

c)

hypotheses

d)

procedures

29.

Something that you keep the same in an experiment is called a(n) _________________________.

a)

variable

b)

control

c)

procedure

d)

conclusion

30.

Something that you keep the same in an experiment is called a(n) _________________________.

a)

variable

b)

control

c)

procedure

d)

conclusion

31.

I want to know if low strength bleach, medium strength bleach, or maximum strength bleach will get Heinz ketchup stains out of white T-shirts the best. What is the variable in this experiment?

a)

the type of stain

b)

the strength of the bleach

c)

the color of shirt

d)

the brand of ketchup

32.

The plastic bottle holds two liters of soda. Is this a Qualitative Observation, Quantitative Observation, or an Inference

a)

Qualitative Observation

b)

Quantitative Observation

c)

Inference

33.

Which are part of the scientific method?

a)

Identify the Problem

b)

Perform an Experiment

c)

Form a Hypothesis

d)

Collect lots of money

e)

Communicate the Results

34.

A student mixes yellow powder with water. Which observation would prove a CHEMICAL change occurred?

a)

The powder DISSOLVED in the water

b)

The water turned the COLOR yellow

c)

The bag's TEMPERATURE changed

d)

The STATE OF MATTER changed

35.

Which of the following options provides evidence of a CHEMICAL change?

a)

Wood is burned releasing ash and smoke

b)

Rocks separate when soil is sifted

c)

Water turns to ice when you put it in the freezer

d)

Salt dissolves in water

36.

Which of the following examples provides evidence of a PHYSICAL change?

a)

Wood is burned and releases ash and smoke

b)

Iron rusts over time

c)

When mixed, baking soda and vinegar form gas bubbles

d)

A piece of paper changes shape when you rip it up

37.

A white tablet is dropped into water. The water becomes cloudy and bubbles are produced. What type of change has occurred?

a)

Physical change

b)

Chemical change

c)

No change

38.

Which observations prove a chemical change has occurred?

a)

Dissolving and expected color change

b)

Mixing and dissolving

c)

State of matter change and boiling water bubbles

d)

Unexpected color change and temperature change

39.

When iron is exposed to air over a long period of time, it forms rust. This is an example of what?

a)

A new substance forming

b)

Color change: no new substance

c)

Shape change: no new substance

d)

Burning: a new substance

40.

A physical change...

a)

Changes the physical properties of an object, but does not create a new substance.

b)

Creates a new substance and cannot be undone.

41.

A chemical change...

a)

Changes the physical properties of an object, but does not create a new substance.

b)

Creates a new substance and cannot be undone.

42.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

43.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

44.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

45.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

46.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

47.

Is this an example of a physical or chemical change?

a)

Physical

b)

Chemical

48.

Which of the following is NOT an example of a physical change?

a)

Crumpling paper

b)

Sharpening a pencil

c)

Clothes shrinking in the dryer

d)

Milk turning sour

49.

A change in which NEW substances are formed.

a)

Chemical change

b)

Physical change

50.

Which of the following is NOT an example of chemical change?

a)

Milk turning sour

b)

Burning wood

c)

Breaking a pencil

d)

Metal turning rusty

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