Chapter 1 B Flashcards
What are the units for mass
Kilogram(kg)=1000g
Gram(g)
What are the units for Length
Meter(m)
Cubic meter(m^3)= 1000L
Liter (L)
What are the units for temperature?
Kelvin (k) Celcius degree (c)
Milli
Centi
Kilo
Pico
1/1000- divide by 1000
x100
x1000
pico means trillionith
mega Kilo hecto deka deci centi milli micro nano pico fempto
x1000,000 x1000 x100 x10 x.1 x.01 x.001 x.000 001 x.000 000 001 x.000 000 000 001 x.000 000 000 000 001
How many significant figures? 203 2.20 35,000 0.0000250
3
3
2
3
- If there is not a decimal when do you start counting?
- When there is a decimal when do you start counting?
start from the right side with the first nonzero # and count the rest
start on the right side with the first non zero number
When multiplying or dividing measurements:
When multiplying or dividing measurements: round off your final answer based upon your measurement that contains the least # of sig. figs.
When adding or subtraction measurements:
When adding or subtraction measurements: round off based upon your measurement with the least # of decimal places.
***When rounding off numbers that do not contain a decimal, be sure to insert zeros as place holders.
Ex. Round off 143,589 to 4 sig. figs.
143,600
Ex. Convert 3.00 meters into cm
100 cm = 1 m (exactly)
- cm = ___ m
355 mL = ___ L
0.035 km = ___ cm
Answer on paper**
Define Temperature
a measure of the average kinetic energy (movement) of a body.
How do we measure temperature what units?
Celsius (oC)
Fahrenheit (oF)
Kelvin (K)
Kelvin=
=degree C + 273
