SCIE 0900 Review Worksheet
Name _________________
Extra Homework #3
Use your book, labs and appendix sections to complete this!
1. Put a number next to each step in the scientific method in the order in which you
should complete it:
______
______
______
______
Formulate your conclusion
Create your hypothesis
Make observations
Design and conduct experiments
Select the right answer below for each fill-in-the blank below: Some answers can be
used more than once.
materials
data
graphs
conclusion
statement
procedures
tables
test
control
hypothesis
observations
variable
results
2. Your hypothesis must be a testable _____________ based on _______________ .
3. The experiment is a systematic __________ of the variables involved in solving a
problem.
4. The experiment must list your ____________ needed and ____________to follow.
5. You use _______ and/or __________ to analyze the ______________ of your
experiment to see if your ____________ is correct.
6. You should have a _______________, or factor in your experiment, that doesn’t
change. There should be one _________________, or factor of your experiment that
will change.
7. Your ___________ can be shown in the form of tables or graphs.
8. Your _________________ must state whether your ___________________ was
correct or not.
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Dimensional Analysis Review:
1. Dimensional Analysis uses ______________ factors or unit factors to convert from
one metric unit to another.
2. What are the steps for metric conversions using dimensional analysis?
1. Given _____________ with it’s unit
2. Set up the ___________________ factor
a. Place the ___________ unit as the denominator of the _________________ factor
b. Place the desired unit as the _______________ numerator
c. Place a _______ in front of the ____________ unit
d. Place a _______ in front of the smaller unit.
e. Repeat b-d until reaching the final answer
3. ___________ units - only the desired unit should be left
4. Solve the _______________
3. Complete the following problems:
a.
0.52 cg
1 dg
1 ______
1 dag
1 _____
______ kg
1
______ cg
10 dg
10 ____
_____ dg
10 hg
________ kg
b.
456 L
1
10 _____
1 L
_____ cL
10 mL
_____ dL
1 cL
c.
6750 mm = ____________ hm
d.
0.789 kg = _____________ cg
10
10
1 mL
1
_________ µL
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Energy, Chemistry and Solutions Review
1. The ________________ states that the total amount of energy is a system remains
constant. The energy can be ______________ from one form to another, but know new
_________ can be created not any existing energy can be _____________.
2. ___________ is the study of matter.
3. Matter is anything that occupies _____________ and has ______________.
4. Matter is made up of _______________.
5. Elements are made up of ____________ which are the smallest particle of an
element.
6. Protons and ___________ are in the nucleus of the _________ and the
_____________ are in the area around the nucleus.
7. To know which element an __________ belongs to is determined by the number of
__________ in the nucleus.
8. An ____________ is a substance that cannot be broke down or transformed into a
different substance by chemical processes.
9. A _________________ is a pure substance, made up of 2 or more elements, that
can be broke down into 2 or more simpler substances by a chemical reaction.
10. A ________________ is formed when 2 or more _____________ join together
chemically.
11. A chemical ___________ is used to represent and element and a chemical
______________ is an abbreviation for a chemical compound.
12. A solution is a _______________ mixture . The parts of a solution are the
__________ and the ________________. ______________ is called the universal
solvent.
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13. The rate of dissolving a given solvent can is depended upon 3 factors which are:
a.
b.
c.
14. Using the formula determine the concentrations for the following problems.
%
solute
X 100%
solution
a. What is the % m/m if 15.0 g of sugar are added to 225 g of water?
b. What is the % m/v if 45.2 g of salt are dissolved in enough water for a final volume
of 325 mL?
c. What is the % v/v if 263.5 mL of alcohol are added to enough water for a total
solution of 5000 mL?
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