Vocabulary
2 points:
This method is used to study the material world. It is a ______ process: the last step leads back into the first
Scientific Method
Cyclic
Express "1" in Scientific Notation
1EE0
Nonzero digits are ________ _________
Leading zeros are ________ __________
"Sandwiched" zeros are ___________ __________
Always Significant
Never Significant
Always Significant
Perform the following conversions:
A) 3cg ==> kg
B) 300K ==> Celsius
C) 58.7 kL ==> mL
A) 3EE-5 ; 0.00003 kg
B) 26.85 deg C ; 30 deg C
C) 58,700,000 mL ; 5.87EE7 mL
List 5 things that every graph must contain
Title, Axes (2x), Data, Legend, Caption, Axes Labels (2x)
With what units is Temperature measured? (3)
Celsius, Kelvin, Fahrenheit
Large numbers use a ________ exponent
Small numbers use a ________ exponent
Positive
Negative
How many sigs:
2.015 meters
3 students
307.50
0.0050870
4
NA
5
5
Convert 98 deg F to Celsius
Convert 212 deg F to Kelvin
37 deg C
373K
Solve for 'q'
5/(wq) = 10f
1/(2fw)
Describes a set of data that is closely grouped, but not near the accepted value. (2 terms)
Precise, not accurate
Write 5,230,000 in Scientific Notation
5.23EE6
Trailing Zeros are significant when the lie _______ the decimal place
behind
Convert
A) 5.0 inches ==> km
B) 7,320 mg ==> Pounds
A) 1.27EE-4 km
B) 1.61EE-2 pounds
There are 1,000 micrometers in a millimeter
75,000,000 micrometers is how many km?
.075 km
A multiplicative factor used in dimensional analysis problems
Conversion factor
Express the number 2717
A) in scientific notation with an exponent greater than 0
B) in scientific notation with an exponent less than 0
Ex) a) 2.717EE3
b)27170EE-1
Round the following to one fewer significant figure than they currently have:
A) 0.56EE3
B)7,058,200
C) 70.0350
A)600
B) 7.058EE6
C)70.035
A 2.35 kg gold sphere is dropped into a graduated cylinder. 123 mL of water are displaced.
D(gold)=19.3 g/mL V(sphere)=(4/3)*pi*r^3
A) What is the radius of the gold sphere?
B) What is the percent error of the density measurement?
A) 3.09 cm
B) 1.01% low
Simplify the following:
A) 5/x + 3/x
B) x/3 + x/5
A) 8/x
B) 8x/15
The quality of a measurement that distinguishes it from a scalar quantity.
Units
Consider a package of 6.022EE23 marbles. If each marble has a mass of 1.2mg, what is the total mass (in kg)?
7.2EE17kg
How many sigs result from the following operations:
A) 2.1 + 530
B) 3.5g + 0.21kg
C) 17 packs of 52 cards
A) [530] = 2 sigs
B) [210] = 2 sigs
C) [884] = NA
8672
Give the two definitions of density discussed in class
The amount of matter per unit volume
D=m/V