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Unit 1 Test Review

Total questions: 125

Worksheet time: 1hrs 11mins

Name
Class
Date
1.

What is the dependent variable?

a)

the variable that you control or change in the experiment

b)

the variable that you measure

2.

What is the independent variable?

a)

the variable that you control or change in the experiment

b)

the variable that you measure

3.
You are doing an experiment recording the growth of plants under different amounts of sunlight. What is the dependent variable?
a)
The sunlight
b)
The growth
c)
The experiment
d)
The amounts of photons
4.
A variable that never changes is known as a 
a)
constant
b)
independent variable
c)
dependent variable
d)
control
5.
"Ice will melt faster in salt water.", would make a good
a)
Hypothesis
b)
Question
c)
Analysis
d)
Conclusion
6.
What is the independent variable for the hypothesis: If ice melts in salt & fresh water, then it will melt faster in salt water.
a)
The amount of water
b)
The melt time
c)
The size of the ice cube
d)
The amount of salt
7.
What is a constant variable for the hypothesis: If ice melts in salt & fresh water, then it will melt faster in salt water.
a)
The amount of salt
b)
The melt Time
c)
The fresh water.
d)
The temperature of the water
8.

How many independent variables should an experiment have?

a)

0

b)

1

c)

between 1 and 5

d)

as many as needed

9.
The educated guess you make at the beginning of the scientific method is called the....
a)
variable
b)
conclusion
c)
hypothesis
d)
procedure
10.
Which of the following describes a scientific theory?
a)
A scientific theory, once established, can never be changed
b)
A scientific theory is a good guess made by very smart people
c)
A scientific theory explains a broad range of observed facts
d)
A scientific theory is an explanation proven beyond reasonable doubt
11.
Which of the following is an observation about this picture?
a)
The player is wearing a red jersey
b)
the red team is going to score a touch down
c)
the quarterback is getting the ball
12.
Which of the following is an inference about this picture?
a)
The player is wearing a red jersey
b)
the red team is going to score a touch down
c)
the quarterback is getting the ball
13.
What statement is an inference?
a)
There are two fish in the bowl.
b)
They are eating their food.
c)
They like their food.
d)
Both fish are blue.
14.
Why do scientists conduct experiments?
a)
To make a lot of money.
b)
To ask a question. 
c)
To make a hypothesis.
d)
To prove a prediction is correct.
15.

 

What step does every scientific experiment begin with?

a)

hypothesis

b)

question/problem

c)

procedures

d)

conclusion

16.

The summary at the end of an experiment that explains the results. 

a)

conclusion

b)

procedures

c)

materials

d)

responding variable

17.

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)

High acidity is helpful to this type of plant.

c)

Low acidity is harmful to this type of plant.

d)

High acidity is harmful to this type of plant.

18.

a set of controlled observations that test the hypothesis

a)

hypothesis

b)

experiment

c)

conclusion

19.

The step-by-step procedure used to solve a problem is called the:

a)

English System

b)

Metric System

c)

Scientific Method

d)

Surgical Procedure

20.

What are diverse ways that scientists study the natural world and propose explanations based on evidence?

a)

Scientific Law

b)

Scientific Theory

c)

Scientific Inquiry

d)

Scientific Calculator

21.
A scientific ____________ is a statement that describes what always happens under certain conditions in nature.
a)
law
b)
theory
c)
method
d)
variable
22.
Laws are usually mathematically defined.
a)
True
b)
False
23.
A scientific ____________ is a broad explanation for events that is widely accepted as true.
a)
law
b)
theory
c)
observation
d)
method
24.
Laws tells us that it happens but doesn’t describe how or why.
a)
True
b)
False
25.

Humans will live on Mars after 50 years.

a)

Hypothesis

b)

Theory

c)

Law

26.
True or False.  Laws DO NOT change with new evidence.
a)
True
b)
False
27.

Matter is not created or destroyed during chemical reactions.

a)

hypothesis

b)

theory

c)

law

28.

Germs cause diseases in living organisms.

a)

Hypothesis

b)

Theory

c)

Law

29.

The study of carbon containing compounds.

a)

Organic Chemistry

b)

Inorganic Chemistry

c)

Physical Chemistry

d)

Biochemistry

30.

The study of the composition, structure, and properties of matter and the changes it undergoes.

a)

Chemistry

b)

Physics

c)

Biology

d)

Social Science

31.

The study of compounds that do not contain carbon.

a)

Organic Chemistry

b)

Inorganic Chemistry

c)

Biochemistry

d)

Analytical Chemistry

32.

The identification of the components and composition of materials refers to___________________________

a)

Biochemistry

b)

Physical Chemistry

c)

Organic Chemistry

d)

Analytical Chemistry

33.

The study of the properties and changes in matter and their relation to energy.

a)

Physical Chemistry

b)

Biochemistry

c)

Organic Chemistry

d)

Inorganic Chemistry

34.

The study of substances and processes occurring in living things.

a)

Biochemistry

b)

organic Chemistry

c)

inorganic Chemistry

d)

Applied Chemistry

35.
Something that takes up space and has mass.
a)
volume
b)
matter
c)
mass
d)
density
36.

Why study chemistry?

a)

Chemistry explains things in the natural world.

b)

Many careers use chemistry.

c)

Informed citizens need a knowledge of chemistry.

d)

All the options are correct.

37.

Rene grew bacteria from the mouth on special plates in the laboratory. She placed drops of different mouthwashes on bacteria on each plate.  What step of the scientific method does this statement describe?

a)

Observe a problem

b)

Form a hypothesis

c)

Test with an experiment

d)

Draw conclusions

38.

Justin wondered if dyes could be taken out of plant leaves, flowers, and stems.  What step of the scientific method does this statement describe?

a)

Observe a problem

b)

Form a hypothesis

c)

Test with an experiment

d)

Draw conclusions

39.

What do we call the group that remains unaltered (unchanged) in an experiment?

a)

Experimental Group

b)

Control Group

c)

Dependent Group

40.

Which is NOT part of the scientific method?

a)

Form a hypothesis

b)

Test an experiment

c)

Collect Money

d)

Research

41.
Science or Pseudoscience:  Personal bias and the opinion of the scientist.
a)
Science
b)
Pseudoscience
42.
On what axis should the independent variable always be?
a)
X
b)
Y
43.
In order for an explanation to be considered scientific, it must be based on ____________.
a)
an inference
b)
a conclusion
c)
past experience
d)
evidence
44.

If experimental findings are not reproducible,

a)

it is an indication of scientific fraud.

b)

the results are considered valid, but not usable.

c)

the results are not considered valid.

d)

It's an indication that scientific method was not followed.

45.
The word stem pseudo- means:
a)
false
b)
true
c)
understand
d)
science
46.
Which one the following is NOT a branch of science, but a pseudoscience because it not testable, repeatable and observable by scientific standards. 
a)
A. astronomy: study of physical objects (such as stars, galaxies, planets, moons, asteroids, comets and nebulae) and processes (such as supernovae explosions, gamma ray bursts, and cosmic microwave background radiation)
b)
B. physics: the study of properties of matter and energy (mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms)
c)
C. biology: the study of living organisms
d)
D. astrology: the study of how the positions of the stars and movements of the planets have a supposed influence on events and on the lives and behavior of people
47.
Scientific theories are based on
a)
general assumptions of how systems work.
b)
mathematical principles that can be proven true.
c)
large amounts of data collected over time.
d)
observations from within only one scientific discipline.
48.

(True or False) Horse playing is allowed in the laboratory

a)

true

b)

false

49.

(True or False) It is okay to pick up broken glass with your bare hands as long as the glass is placed in the trash can

a)

true

b)

false

50.
After completing an experiment, all chemical wastes should be
a)
dumped down sink
b)
taken home
c)
thrown in trash
d)
disposed of according to teacher's directions
51.
You are heating a substance in a test tube. Always point the open end of the tube
a)
towards your body
b)
toward your lab partner
c)
towards another classmate
d)
away from all people
52.
You have been injured in the laboratory (cut, burn, etc.). First you should
a)
visit school nurse
b)
text your parent
c)
see a doctor after school
d)
tell teacher immediatly
53.
The proper technique for smelling chemicals is ______________
a)
keeping your nose close to the glassware
b)
wafting
c)
to sniff only a small amount
d)
Trick question; you never are allowed to smell chemicals in class
54.

True or False: Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present.

a)

True

b)

False

55.

Approved eye protection devices (such as goggles) are worn in the laboratory

a)

to avoid eye strain

b)

to improve your vision

c)

so that you look super cool

d)

any time chemicals, heat or glassware are used

56.
Before leaving the lab you should always wash or sanitize your hands.
a)
True 
b)
False
57.

When is it OK to eat or drink at the lab tables?

a)

Always

b)

Only during group work, not during labs

c)

Never

d)

Whenever I'm hungry

58.

True or False?

It's fine to smell chemicals directly from the container.

a)

True

b)

False

59.

What piece of equipment can be used to put out a fire on a person?

a)

fume hood

b)

faucet

c)

eyewash fountain

d)

fire blanket

60.

If you are working with an open flame,

a)

Be aware of the flame

b)

Know how to turn it on and off

c)

Know how to properly heat

d)

Keep all flammable materials away from the flame

e)

All of the above

61.

What does MSDS stand for?

a)

Material Safety Data Sheet

b)

Modern Safety Day Special

c)

Medium Small Data Stuff

d)

Made Something Doing Something

62.

What information does the MSDS contain?

a)

Name & trade name for the substance

b)

Physical characteristics of the chemical

c)

How to deal with a spill or leak

d)

Precautions that need to be followed

e)

What to do if a person is exposed to the substance - skin, eyes, ingestion, etc.

63.
Which hazard does this pictogram represent?
a)
Flammable
b)
Oxidizing
c)
Health Hazard
d)
Danger to the Environment
64.
Which hazard does this pictogram represent?
a)
Danger to the Environment
b)
Health Hazard
c)
Corrosive
d)
Explosive
65.
Safety Data Sheets provide some basic health information in addition to information about chemicals.
a)
True
b)
False
66.
Which hazard does this pictogram represent?
a)
Harmful/Irritant
b)
Explosive
c)
Health Hazard
d)
Toxic
67.

True or false: Hot glass looks the same as cold glass

a)

true

b)

false

68.

How many people have four books in their desks?

a)

2

b)

3

c)

4

d)

5

69.

How many people have two or less books in their desk?

a)

4

b)

5

c)

6

d)

7

70.

How many people like either mushroom or pepperoni the best?

a)

1

b)

20

c)

50

d)

100

71.

How many people like cheese pizza the best?

a)

5

b)

10

c)

25

d)

50

72.

What is the independent variable on the graph (x-axis)?

a)

Metro Bicycle Shop Weekly Sales

b)

Bicycles Sold

c)

Types of Bicycles

73.

What is the dependent variable on the graph (y-axis)?

a)

Metro Bicycle Shop Weekly Sales

b)

Bicycles Sold

c)

Types of Bicycles

74.

How many total people took the survey?

a)

50

b)

150

c)

100

d)

200

75.

What label is along the y-axis in this graph?

a)

Copyright 2007

b)

Lines

c)

Age in Years

d)

Number of Teens

76.

What is the general trend of this line graph?

a)

The more you mow, the less money you make.

b)

You make the same amount of money regardless of how long you mow.

c)

The more you mow, the more money you make.

d)

Mowing is dangerous.

77.

How much does it cost to have your lawn mowed for 2 hours?

a)

$16

b)

$17

c)

$18

d)

$19

78.

Every graph must have a

a)

Pet

b)

Candy bar

c)

Title

d)

Chromebook

79.

Which statement below accurately represents the graph?

a)

$100 is earned for each hour worked

b)

$100 is earned for every 2 hours worked

c)

$500 is earned for every 8 hours worked

d)

$200 is earned for every 3 hours worked

80.

How many eggs were measured altogether in this experiment?

a)

25

b)

40

c)

90

d)

100

81.

According to this graph, for every 24 hours, about how many hours are spent watching TV?

a)

0 hours

b)

5 hours

c)

13 hours

d)

3 hours

82.
If you surveyed 550 students and this was your results, how many liked comedy?
a)
20
b)
55
c)
500
d)
110
83.
The graph shows the results of a survey to determine student's favorite pets. Why is this graph misleading?
a)
The slices are the wrong color
b)
The slices are not the correct size
c)
The percents do not add up to 100
d)
Not misleading
84.
Which graph is misleading?
a)
Neither graph is misleading.
b)
The graph on the left is misleading because the y-axis does not start at zero.
c)
The graph on the right is misleading because the difference should be more than what the graph shows.
85.
Which graph matches the data?
a)
Graph 1
b)
Graph 2
c)
Graph 3
d)
Graph 4
86.
What is the relationship between the independent variable and the dependent variable?
a)
As time increase, distance decreases
b)
As time increases, distance increases
c)
As time decreases, distance decreases
d)
As time decreases, distance increases
87.
What would be the best scale for this data?
Days       Cm
  1            1.0
  2            3.5
  3            5.0
  4            8.5
a)
count by fives to 10
b)
count by tens to 100
c)
count by ones to 5
d)
count by ones to 10
88.

Where is the dependent variable placed on a graph?

a)

x-axis

b)

y-axis

c)

either the x-axis or the y-axis

d)

neither the x-axis nor the y-axis

89.

Where is the independent variable placed on a graph?

a)

x-axis

b)

y-axis

c)

either the x-axis or the y-axis

d)

neither the x-axis nor the y-axis

90.

What type of graph should be used to show the color car that gets the highest percentage of speeding tickets?

a)

bar graph

b)

histogram

c)

line

d)

pie chart

e)

scatterplot

91.

What type of graph should be used to show the speed of a car while it slows down?

a)

bar graph

b)

histogram

c)

line

d)

pie chart

e)

scatterplot

92.

What type of graph should be used to show how many students got an A, B, C, D, or F on a unit exam?

a)

bar graph

b)

histogram

c)

line

d)

pie chart

e)

scatterplot

93.

For studying the effect of time spent on social media on GPA, which is the independent variable?

a)

GPA

b)

time on social media

c)

time spent studying

d)

type of social media

94.

For studying the effect of time spent on social media on GPA, which is the dependent variable?

a)

GPA

b)

time on social media

c)

time spent studying

d)

type of social media

95.

an instrument used to measure changes in atmospheric pressure

a)

Barometer

b)

chromotography

c)

buret

d)

fume hood

96.

a flat bottomed, cylindrical container made of glass or plastic that is used to hold, pour, or heat (glass)

a)

beaker

b)

crucible with lid

c)

erlenmeyer flask

d)

evaporating dish

97.

A way of separating and identifying mixtures of solutes in a solution; the method depends on the affinity of the different solutes in the mixture for the medium through which the solution moves

a)

chromatography

b)

graduated cylinder

c)

dependent variable

d)

buret

98.

an insulated wire formed into a triangle to support a crucible during heating substances to high temperatures

a)

clay triangle

b)

buret

c)

beaker

d)

crucible with lid

99.

a container made of metal or a refractory material used for heating substances to high temperatures

a)

crucible with lid

b)

evaporating dish

c)

beaker

d)

fume hood

100.

the factor in a controlled experiment that is not changed

a)

dependent variable

b)

independent variable

c)

hypothesis

d)

model

101.

a series of steps that guides engineering teams as they solve problems; it emphasizes open-ended problem solving and encourages one to learn from failure; steps include researching the problem , developing possible solutions, and constructing a prototype to be tested

a)

engineering design process

b)

dependent variable

c)

buret

d)

model

102.

glassware with a flat bottom, conical body, and a cylindrical neck typically used in titrations

a)

erlenmeyer flask

b)

buret

c)

beaker

d)

crucible with lid

103.

a small glass dish that is used to evaporate a substance; it is also used as a cover for a beaker

a)

evaporating dish

b)

crucible with lid

c)

Erlenmeyer Flask

d)

beaker

104.

a cleansing solution or a station connected to water line that is used to rinse your eyes after exposure to chemicals or other irritants

a)

eye wash/eye bath

b)

fume hood

c)

chromatography

d)

buret

105.

a local ventilation device used to limit or prevent exposure to hazardous or toxic fumes

a)

fume hood

b)

evaporating dish

c)

model

d)

hypothesis

106.

a narrow, cylindrical piece of volumetric glassware with graduated intervals used to measure the volume of a liquid

a)

graduated cylinder

b)

beaker

c)

evaporating dish

d)

buret

107.

a proposed explanation for an observation

a)

hypothesis

b)

model

c)

buret

d)

chromatography

108.

a representation of an object or event

a)

model

b)

hypothesis

c)

buret

d)

fume hood

109.

a piece of volumetric glassware, usually graduated in 0.1 mL intervals, used to deliver a solution that is used in titrations of a quantitative manner

a)

buret

b)

graduated cylinder

c)

beaker

d)

erlenmeyer flask

110.

scissor-like tools that allow for the safe handling of hot glassware; a rubber coating improves the tongs’ grip

a)

Metal tongs

b)

ring stand

c)

wire gauze

d)

test tube rack

111.

protects the wearer from exposure to hazardous and toxic substances when handling them; they include aprons/lab coats, goggles, gloves, and respirators

a)

PPE

b)

SDS

c)

simulation

d)

probeware

112.

digital sensors that allow real-time collection of data - temperature, pressure, pH, etc.; the data collected is transferred to an electronic device that analyzes and presents the data in different ways - graphs, charts, etc.

a)

probeware

b)

thermometer

c)

test tube

d)

watch glass

113.

a metal pole with a flat bottom and an adjustable ring protruding from its side; mostly used to hold glassware above an open flame

a)

ring stand

b)

test tube rack

c)

wire gauze

d)

thermometer

114.

a shower-like device that uses large amounts of water to rinse off contaminants, irritants, toxins, and other harmful chemicals that a body is exposed to

a)

safety shower

b)

eye wash

c)

simulation

d)

probeware

115.

document containing specific chemical safety information such as warnings, hazards, lethal doses, disposal, and chemical spill clean-up; it should be placed in an easily accessible location

a)

SDS

b)

PPE

c)

simulation

d)

theory

116.

a concise statement that summarizes the results of many observations and experimental investigations

a)

scientific law

b)

scientific method

c)

theory

d)

simulation

117.

a logical, systematic approach to the solution of a scientific problem; steps include making observations, testing hypotheses, and developing theories

a)

scientific method

b)

scientific law

c)

theory

d)

simulation

118.

imitation of a situation; the production of a computer model of an item, process, reaction, etc. for the purpose of study

a)

simulation

b)

scientific method

c)

theory

d)

scientific law

119.

a hollow cylinder of glass with one end closed; used in chemical and biological experimentation and analysis

a)

test tube

b)

test tube rack

c)

watch glass

d)

probeware

120.

a tong -like device used to firmly hold a test tube when performing analyses or heating over a flame

a)

test tube holder

b)

test tube rack

c)

metal tongs

d)

wire gauze

121.

a shelf made out of metal, plastic, or wood that is used to hold multiple test tubes

a)

test tube rack

b)

test tube holder

c)

wire gauze

d)

metal tongs

122.

a well tested explanation for a broad set of observations

a)

theory

b)

scientific law

c)

scientific method

d)

simulation

123.

a narrow, hermetically sealed glass tube marked with graduations and having at one end a bulb containing mercury or alcohol that expands and contracts in the tube with heating and cooling.

a)

thermometer

b)

probeware

c)

watch glass

d)

simulation

124.

a circular, concave piece of glass used as a surface to evaporate a liquid, to hold small amounts of solid while weighing or dissolving, or as a cover for a beaker

a)

watch glass

b)

test tube

c)

thermometer

d)

PPE

125.

a very fine, woven, heat resistant wire mesh used to support crucibles or small glass beakers on a ring stand and protect them from direct heat

a)

wire gauze

b)

watch glass

c)

PPE

d)

probeware

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