WorksheetsChapter Test in Chemistry
Total questions: 25
Worksheet time: 25mins
What is the best use of a beaker?
Measuring accurate volumes
Transferring one drop of substance at a time
Mixing and pouring substances
Heating substances
Dissecting organisms
Flammable materials, like alcohol, should never be dispensed or used near
an open door
an open flame
another student
. a sink.
If a laboratory fire erupts, immediately
notify your instructor.
run for the fire extinguisher
throw water on the fire.
open the windows.
Approved eye protection devices (such as goggles) are worn in the laboratory.
to avoid eye strain
to improve your vision
only if you don’t have corrective glasses
any time chemicals, heat or glassware are used.
If you wear contact lenses in the school laboratory,
take them out before starting the lab.
you do not have to wear protective goggles.
advise your science instructor that you wear contact lenses.
keep the information to yourself.
A method of procedure consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
Scientific Method
Variables
Hypothesis
Conclusion
A logical interpretation of events based on prior knowledge or opinion
Inference
Hypothesis
Observation
Conclusion
Possible answer to a question that can be tested
•based on observations and knowledge
•“If” “Then” “Because” statement
Inference
conclusion
Observation
Hypothesis
Variable that kept constant
Independent
Constant
Dependent
data
The study of the composition, structure, and properties of matter and the changes it undergoes.
Chemistry
Biology
Physics
Social Science
The study of carbon containing compounds.
Organic Chemistry
Physical Chemistry
Inorganic Chemistry
Biochemistry
The study of compounds that do not contain carbon.
Organic Chemistry
Biochemistry
Inorganic Chemistry
Analytical Chemistry
The study of the properties and changes in matter and their relation to energy.
Physical Chemistry
Organic Chemistry
Biochemistry
Inorganic Chemistry
How would you write 564,000,000 in scientific notation?
5.64 x 10-7
5.64 x 108
5.64 x 106
56.4 x 107
Scientific Notation is made up of two number parts. The second part is a power of base 10.
True
False
When writing a number in scientific notation, the first number must be greater than 1, but less than 10.
False
True
The rule of scientific notation is to write all exponents with a base of ____.
50
100
5
10
How many significant figures: 216 m
1
3
2
0
How many significant figures: 2016 m
1
3
2
4
How many significant figures: 153.0 mL
1
3
2
4
How many significant figures: 1000 mL
1
3
2
4
How many significant figures: 0.012 km
1
3
2
4
How do you measure the volume using a graduated cylinder?
Measurements must be taken from the top of the meniscus and at eye level
Measurements must be taken by looking from below the cylinder
Measurements must be taken by looking from above the cylinder
Measurements must be taken from the bottom of the meniscus and at eye level
How do we measure B with 3 significant digits?
9.2
9.25
9.20
9.00
How many significant digits would you report in this measurement?
1
3
2
4
