Experimental Skills

Question 0

Metric Convertion

Answer 0

Kilo-
Hecta-
Deca-
Base
Deci-
Centi-
Mili-

Question 1

Adding, subtracting, multiplying, and dividing significant figures

Answer 1

Adding/subtracting:- the result is rounded off so it has the same number decimal digits as the number with the least number of decimal digits

Multiplying/dividing:- result should be rounded off to have the same number of significant figures as the number with the least significant figures

Question 2

Accuracy vs. Precision

Answer 2

Accuracy is how close a measurement is to the true value

Precision is how close a measurement is to other measured values or numbers

Question 3

Density

Answer 3

D=M/V

REMEMBER*:- Units g/mL or g/cm^3 because g=mL=cm^3

Question 4

Standard Deviation

Answer 4

|data - mean|

Question 5

Relative Uncertainty

Answer 5

(average deviation/sample mean) * 100

Shows how precise the data was

Question 6

Percent Error

Answer 6

|Experimental-True/ True| *100

Shows how accurate the data is compare to the tue value

Question 7

Systematic Errrors vs. Random Errors

Answer 7

Systematic:- one directional
Random:- cannot be corrected