Chapter 2 Flashcards
What is the SI unit for mass?
Kilogram
What is the SI unit for time?
Second
What is the SI unit for temperature?
Kelvin
What is the SI unit for Amount of substance?
Mole
What is the SI unit for electric current?
Ampere
What is the SI unit for luminous intensity?
Candela
What is kilo (power, symbol, #)?
10^3
k
1000
What is hecto(power, symbol, #)?
10^2
h
100
What is deci(power, symbol, #)?
10^-1
d
1/10
What is centi (power, symbol, #)?
10^-2
c
1/100
What is milli (power, symbol, #)?
10^-3
m
1/1000
What is micro (power, symbol, #)?
10^-6
u
1/1 000 000
What is nano (power, symbol, #)?
10^-9
n
1/1 000 000 000
What does SI mean?
Le Système Internation Unit
What is the SI unit for length?
Meter
What is volume?
The amount of space occupied by an object
What is density?
The ratio of mass to volume or mass divided by volume
What is accuracy?
The closeness of measurements to the correct or accepted value of the quantity measured
What is precision?
Refers to the closeness of a set of measurements of the same quantity made in the same way
How do you get percent error
Percent error=
(|Value accepted-value experimental|
/value accepted)X100
What are significant figures?
A measurement consists of all the digits known with certainty plus one final digit, which is somewhat uncertain or is estimated
What is quantitative data?
Measurements that have numbers
What is qualitative data?
Observations that do not include numbers
What are direct proportions?
If you divide one quantum by another then a constant value will be the answer
What is an indirect proportion?
If each quantity is multiplied by the other the the products will be a constant value
What is the density triangle?
/DxV\
D=
m/V
m=
D*V
V=
m/D
