Objective 1…TAKS
10th and 11th grades
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TAKS questions from released tests, study guides and information booklet:
Safety, measurement, correct choice of equipment
Interpreting graphs and illustrations
Analyzing promotional labels and ads
The Scientific Method
Links to non-TAKS tutorials and quizzes
Link to 10th grade study guide
Scroll to p.251 for objective 1
Link to 11th grade study guide
Scroll to p.297 for objective 1
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Non-TAKS tutorials & quizzes
Objective
Safety
How to read a MSDS sheet
1
Scientific Method
20 ques. Living Environment Introduction & Scientific Inquiry quiz
17 ques. Scientific Method quiz
9 ques. Scientific Method quiz
7 ques. Scientific Method quiz
‘Apparatus and Units quizzes’
A metric conversion calculator
Distance measuring. Choose level ‘A’ first, then proceed to level ‘B’
and ‘C’.
Length, weight, capacity measuring
Temperature measuring
Interactive thermometers
Measurement practice
The ruler game…interactive reading of ruler in inches.
Conversion tutorial and chemistry problem solving.
Matching the science units
Accuracy vs. precision tutorial
Measurement
Promotional analysis
A calcium test.
A nutrition game.
Recognizing health quackery.
Look up nutrient facts about anything.
Safety/Measurements/Equipment
choices
Back to safety, etc
• Understanding safety precautions
• Reading measurements
• Choosing equipment
Home
Home
A science class is conducting an experiment
that produces noxious fumes. Because of
inadequate ventilation, some students begin
to feel nauseated and dizzy. The first
response should be to —
A neutralize the acid that is reacting to
produce the noxious fumes
B carry the reactants outside, away from
other students
C leave the room and go to an area with
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fresh air
D spray the reaction with a fire extinguisher
Back to safety, etc
Home
The safest way to dilute
concentrated sulfuric acid is to add
A a series of small volumes of water
to the acid while stirring
B the acid to water slowly while
stirring constantly
C the acid to a small volume of
water and then add more water
D dilute sulfuric acid to a small
volume of the concentrated acid 1
Back to safety, etc
Acids must be handled
with extreme care.
You will be shown the
proper method for
diluting strong acids.
Home
Back to safety, etc
AW
Always add acid to
water, swirl or stir the
solution and be
careful of the heat
produced, particularly
with sulfuric acid.
WA
Laboratory equipment is cleaned andHome
properly stored after use primarily so
that —
A chemical products can be measured
and recorded as data
B time is saved in setting up the next
experiment
C toxic materials can be kept in the
laboratory
D the possibility of contamination in the
laboratory
isprevents
minimized
A clean lab
accidents, contamination and worry.
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Back to safety, etc
The reason for wafting or fanning a small Home
amount of chemical vapors toward the nose
as a means to detect odors in a test tube is
to —
A avoid experimental error from excessive
loss of mass of reactants or products
B avoid splashing chemicals into the face of
any person
C protect the respiratory tract against
potentially harmful vapors
D determine the relative strength of the odor
before smelling directly
Back to safety, etc
15
Reactions that produce toxic
gases should be performed in
a—
A laboratory fume hood
B beaker with a watch glass on
top
C well-ventilated area of the lab
D warm, airtight drying oven
Home
Back to safety, etc
15
Always wear goggles when using glassware,
heat/fire and chemicals. And always secure loose
clothing and hair.
All of these procedures must be
followed when using the setup
shown except —
A putting on safety goggles
B handling the beaker with tongs
C securing loose clothing
D wearing rubber gloves
Home
Back to safety, etc
Latex, rubber gloves would melt. Cotton gloves handle heated glassware.
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Home
Back to safety, etc
A safety checklist for this activity should include
the presence of a proper fire extinguisher and all
the following items except a —
A fire blanket
B receptacle for broken glass
Lab aprons are used
when there is fire and/or chemicals in use.
C laboratory
apron
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D squeeze bottle
Home
Back to safety, etc
The ingredients described above are used to make a
bonding agent. The most important safety precaution to
take when applying this bonding agent is to —
F dry it with a small flame
G work in a well-ventilated area
H cover the work area with newspaper
J wear a lab coat
2
Home
Classification symbols
for certain fire
extinguishers are
shown below.
Which class of fire
extinguisher should
be used when
a hot plate overheats
and catches on fire?
Back to safety, etc
24
Home
Back to safety, etc
Home
Back to safety, etc
Assume all unknown materials are toxic
until finding out differently.
Which safety precaution should be observed
while analyzing sediment from a marine
aquarium?
A Wear rubber gloves
B Use a fume hood
C Avoid using glassware
D Have a fire extinguisher nearby
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Home
Back to safety, etc
Which of the following shows the length of
a rubber strip measured precisely to
2.22 centimeters? –
7
Home
Back to safety, etc
Home
Back to safety, etc
47 – 38 = 9 mL
The illustration shows volume levels of a liquid in a
graduated cylinder before and after a sample was
removed. According to this information, what was the
volume of the sample to the nearest milliliter? Record
and bubble in your answer on the answer document. 20