wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Bonds and Scientific Method

Total questions: 37

Worksheet time: 21mins

Name
Class
Date
1.
Ionic or covalent?
C  O
a)
Ionic
b)
Covalent
2.
Ionic or covalent?
Na  Br
a)
Ionic
b)
Covalent
3.
Ionic or covalent?
K  Br
a)
Ionic
b)
Covalent
4.
Ionic or covalent?
H  O
a)
Ionic
b)
Covalent
5.
Ionic or covalent?
C  H
a)
Ionic
b)
Covalent
6.
Ionic or covalent?
Na  Cl
a)
Ionic
b)
Covalent
7.
Ionic or covalent?
Na  F
a)
Ionic
b)
Covalent
8.
Ionic or covalent?
N  H
a)
Ionic
b)
Covalent
9.
Ionic or covalent?
Ca  Cl
a)
Ionic
b)
Covalent
10.
Ionic or covalent?
H  H
a)
Ionic
b)
Covalent
11.
a)
the independent variable is distance
b)
the independent variable is d=25 t
c)
the dependent variable is time
d)
the dependent variable is distance
12.
a)
The dependent variable is total cost
b)
The dependent variable is weight
c)
The independent variable is total cost
d)
The independent variable is cost of a package
13.

You decide to clean your bedroom. You notice that your floor is covered with clothes. You decide to try to get rid of the clothes by throwing the clothes into the air. You throw clothes from a 1/3 of the room into the closet and a second 1/3 of the room straight up in the air. The last 1/3 of the room you leave the clothes on the floor. After 30 minutes of "cleaning", the floor of the room is now visible. WHAT IS THE INDEPENDENT VARIABLE?

a)

The bedroom

b)

How clean the bedroom is

c)

The amount of clothes

d)

Throwing the clothes

14.

You decide to clean your bedroom. You notice that your floor is covered with clothes. You decide to try to get rid of the clothes by throwing the clothes into the air. You throw clothes from a 1/3 of the room into the closet and a second 1/3 of the room straight up in the air. The last 1/3 of the room you leave the clothes on the floor. After 30 minutes of "cleaning", the floor of the room is now visible. WHAT ARE TWO CONTROLLED VARIABLES?

a)

The amount of clothes

b)

The direction you are throwing the clothes

c)

The bedroom

d)

How clean the bedroom is

15.
A possible explanation to a problem that has not yet been tested. 
a)
data
b)
theory
c)
hypothesis
d)
fact
16.

At what temperature did bread mold the slowest?

a)

20

b)

40

c)

60

d)

80

17.

At what temperature did bread mold the fastest?

a)

100

b)

40

c)

60

d)

20

18.

Jaden, Sincere, and Ashante were testing to see which ball, a basketball or volleyball, would bounce higher. Before they did the experiment, each of them guessed what they thought would happen before the experiment.

What part of the scientific method is this called?

a)

a) purpose

b)

b) materials

c)

c) hypothesis

d)

d) data

19.

Jackhyla and Shantell wanted to do an experiment with magnets. They listed the things they needed to do the experiment: magnets, toy cars, and rubber bands. What part of the scientific method is this called?

a)

a) hypothesis

b)

b) materials

c)

c) procedure

d)

d) data

20.

Degas, Nyasia, and Abriana decided to test which objects in their classroom were attracted to magnets. When their teacher asked why they were doing their experiment, they told their teacher the reason.

What part of the scientific method is this called?

a)

a) purpose (problem statement)

b)

b) materials

c)

c) data

d)

d) hypothesis

21.

Makayla and Trayshawn wanted to test if sugar or salt dissolved faster in hot water. In order to do this, they followed certain steps to complete the experiment.

What part of the scientific method is this called?

a)

What part of the scientific method is this called?

a) data

b)

b) procedure

c)

c) purpose

d)

d) results

22.

Kamiyah and Treyvaughn were testing which balloon rocket would go the fastest. After they did each test, they recorded their findings on a chart.

a)

These findings are what part of the scientific method?

a) hypothesis

b)

b) materials

c)

c) procedure

d)

d) data

23.

Tayshawn and Jacoby were looking at the results of their experiment with glue. They noticed that wood holds tighter together with wood glue than with school glue. They learned that wood glue is best when working with wood.

What part of the scientific method is this called?

a)

a) hypothesis

b)

b) materials

c)

c) procedure

d)

d) conclusion

24.

Abigail and Laddaris were testing which color candle would burn the fastest with their teacher. They thought the red one would burn the fastest and made their prediction before doing the experiment.

What part of the scientific method is this called?

a)

a) hypothesis

b)

b) materials

c)

c) procedure

d)

d) data

25.

Tyyhon and Sharnyce looked at the results of their experiment and made a bar graph to show what happened after their experiment.

What are the results of the scientific method called?

a)

a) data

b)

b) purpose

c)

c) procedure

d)

d) hypothesis

26.

Demontae and Ariana measured how high they could jump by wearing different types of shoes. From their results, they learned that shoes with rubber soles are more suitable for jumping rather than shoes with plastic soles.

What part of the scientific method is this called?

a)

a) conclusion

b)

b) materials

c)

c) procedure

d)

d) data

27.

Astronomers send probes to other

planets to take pictures of their surfaces. An astronomer thinks that briny

water flows on Mars because he noticed certain features in one picture of Mars.

Which method did the astronomer use to form this hypothesis?

a)

Reading scientific literature

b)

Making careful observations

c)

Analyzing a natural experiment

d)

Conducting a controlled experiment

28.

A group of scientists has been asked to conduct a study on how an oil spill will affect the surrounding sea life. The scientists decide that the best way to complete the study is to create a model. Which of the following is the most

likely reason that the scientists will use a model instead of creating an actual oil spill study?

a)

They think using a model will provide them with more accurate results.

b)

They can use different species that the plants and animals found in the real ecosystem.

c)

They expect the oil spill in their model to have a much greater effect than an oil spill in the natural environment

d)

They can study the effects of an oil spill without harming surrounding sea life.

29.

In order to help visualize an atom, a scientist may do which of the following?

a)

Perform a controlled experiment

b)

make a model

c)

create a law

d)

develop a theory

30.

A biologist hypothesizes that a squirrel's body size is affected by the inclusion of a particular type of food in its diet. Which is the best method the scientist could use to prove this hypothesis?

a)

Collect data by observing the squirrels eating food in the wild.

b)

Design a controlled experiment to test different types of food.

c)

Analyze data from existing scientific studies on the different types of food.

d)

Develop a theoretical model to predict how the food type will affect body size

31.

On his voyage on the HMS Beagle, Darwin saw fossils of giant sloths whose bones

resembled bones of living sloths, but were much larger in size. Darwin hypothesized that the fossil sloths were related to sloths alive today. This hypothesis was based on

a)

investigations using observation and inference.

b)

experimentations using controlled variables

c)

creating models to create a theory

d)

making predictions

32.
A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is the best conclusion for this experiment?
a)
Acid has no effect on the health of this type of plant.
b)
B. High acidity is helpful to this type of plant.
c)
C. Low acidity is harmful to this type of plant.
d)
High acidity is harmful to this type of plant.
33.
An osmosis investigation was conducted using chicken eggs to represent cells with semipermeable membranes. The mass of each egg was measured to determine how much water diffused into or out of the eggs. The eggs were first soaked in vinegar to dissolve the shell. Each egg was then placed in one of three different solutions for 24 hours. The table below shows the results of the investigation. Based on this experiment, which of the following should be inferred about cells with semipermeable membranes?
a)
Substances other than water may also cross the cell membrane.
b)
Substances other than water may block pores in the cell membrane.
c)
 Water enters the cell when placed in environments of high water concentration.
d)
Water leaves the cell when placed in environments with a low concentration of solutes
34.
In order to be accepted, a scientific theory must be
a)
 widely tested and supported by extensive data
b)
 based on the results of a single experiment
c)
 controversial and cause debate
d)
 in line with all previous historical ideas
35.
In an appropriately designed experiment, a scientist is able to test the effect of
a)
 a single variable
b)
 multiple variables
c)
 the hypothesis
d)
 scientific observations
36.
Which statement best expresses a basic scientific assumption?
a)
Interpretation of experimental results has provided explanations for all natural phenomena.
b)
If a conclusion is valid, similar investigations by other scientists should result in the same conclusion.
c)
For any conclusion to be valid, the design of the experiment requires that only two groups be compared.
d)
After a scientist formulates a conclusion based on an experiment, no further investigation is necessary.
37.
Conclusions based on an experiment are most likely to be accepted when
a)
they are consistent with experimental data and observations
b)
 they are derived from investigations having many experimental variables
c)
 scientists agree that only one hypothesis has been tested
d)
 hypotheses are based on one experimental design