The shortcut method for writing very small numbers or very large numbers.
Scientific Method
100
Difference between accuracy and precision
Accuracy - how close a measurement is to the actual answer
Precision - how close a measurement is to other measurements of the same thing
100
What is the rule when multiplying or dividing?
Answer must have the same amount of significant figures as the measurement with the fewest amount of significant figures.
100
Kilo- means...
1,000 times
200
Matter is anything that has....
mass and volume
200
Example of Scientific notation and Standard notation
229,000 (Standard)
4.73 x 10`3 (Scientific)
200
What number of this measurement is uncertain?
124.8
8
200
What is the rule when adding or subtracting?
The answer must have the same amount of significant figures to the right of decimal point as the measurement with the least amount of significant figures to the right of the decimal point.
200
500 mg = _____ g
0.5 grams
300
Difference between Qualitative and Quanitative answers
Qualitative - Describing something with out using numbers.
Quantitative - Describing something using numbers.
300
245,860,000,000
Place in Scientific Notation
2.4586 x 10`11
300
How many significant figures are in the measurement 30,780 grams?
4
300
8.35 meters x 3.996 meters
33.4 square meters
300
2.5 km = ______ cm
250,000 cm
400
The method of study used by scientists
Scientific Method
400
2.65 x 10`-12
Standard Notation
.00000000000265
400
How many significant figures are in the measurement 3050.1 grams?
5
400
98.0 pounds - 1.22 pounds
96.8 pounds
400
Calculate the density of an object with the mass of 24.3 grams and the volume of 32.9 mL.
.739 g/mL
500
Difference between independent and dependent variable
Dependent - responds to the independent variable
Independent - changed by the experimenter
500
What does a negative exponent tell you about a number?
The number is very small.
500
A three is 70 feet tall. It was measured twice using the same tool. The measurements recorded were: 59.3 feet and 58.9 feet.
Are these measurements accurate, precise, or both?
Precise
500
7 centimeters x 1.86 centimeters x 0.002 centimeters
0.03 cubic centimeters
500
What is the volume of an object with the density if 1.25 g/mL and the mass of 281 grams?