SCIE 0900 REVIEW FOR TEST 3
For the test be sure to know how to do everything listed below. Plan to able to show your work
for any problems
Metric Conversions with just moving the decimal To convert a larger metric unit to a smaller metric unit we move the decimal to the ________________.
To convert a smaller metric unit to a larger metric unit we move the decimal to the ________________.
Convert the following by moving decimal
3200 cm = ____________ km
2.55m = _________________mm
0.345 dam = __________ dm
5677hm = _________________ m
How many are there? Be able to calculate:
How many millimeters in a centimeter? _____________
How many milligrams are in a gram? _____________
How many milliliters in a liter? _______________
How many decameters in a kilometer? _____________________
How many centigrams in a hectogram? ____________________
Scientific Notation:
• Numbers are expressed as some quantity between 1 & 10 multiplied by 10 raised to some
exponent
m
N = A x 10
N = any number
A = coefficient between 1 & 10, can be positive or negative, must be greater than 1 or equal to 1 and less
than 10 Remember – only significant figures are expressed in Scientific Notation!
10 = called the base
m = integer, positive, negative or zero
Convert to Scientific Notation
18.1 =
0.0005=
1,445 =
0.33 =
Convert from Scientific Notation
3.80 x 10 -5 =
5.46 x 106 =
6 x 10 3 =
3.0034 x 10-2=
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Be very familiar with the following formulas and be prepared to do problems similar to these
below and those from the homework assignments. YOU DO NOT HAVE TO MEMORIZE THE
FORMULAS THEY WILL BE PROVIDED Be able to put answers in correct numbers of significant
digits.
How do you determine the mass?
Determining Volume of a block, Cylinder or sphere – by measurement or displacement – Which is more
accurate?
A piece of wood has the measurements of 3.3cm x 1.2cm x 1.0 cm. It has a mass of 4.60 gms.
What is its volume?
What is its density?
A ball has a diameter of 5.62cm. It has a mass of 9.33g.
What is its volume?
What is its density?
A cylinder has a diameter of 4.64 cm. I has a length of 12.25cm. It has a mass of 61.5g.
What is its volume?
What is its density?
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Displacement
1. Original reading of volume
2. Final volume of water
3. Final volume – original volume = volume of the object
Mass of object = 11.6 g
Calculate density of the object:
Periodic Table
What do groups and periods tell us?
What info is in each box for each element?
How are elements different?
How are the elements divided up?
Why do we use the periodic table?
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Microscope:
Know the correct way to use a microscope, the parts of the microscope and what they do/how they work.
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Definitions and topics - be familiar w/what they are or what they refer to:
Density
Neutron
Density gradient
Proton
Matter
Nucleus
States of matter – what are they and how are
they different?
Electron
Heterogeneous mixture
Electron shells
Homogeneous mixture
Ion
Element
Ionic bond & what happens
Compound
Electrolytic solution
Mixture
Covalent bond & what happens
Colloid
Chemical formula
Suspension
Heat conduction
Colloidal dispersion
Heat energy
Disassociation
Conduction of electricity
Pure substance
Free electrons
Atomic Number
Law of Conservation of Energy
Atomic Mass
Osmosis – what happens
Periodic Table – what do we find on it, what is
it? What is in each box?
Diffusion – what happens
Molecule
Scientific Notation
Periods, Groups
Magnification
Metals, Non-Metals, Metalloids,
Field of View
Atom
Scientific Notation
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