# chem. chapter 2

The flashcards below were created by user mnmitch on FreezingBlue Flashcards.

1. length
• meter
• m
2. mass
• kilogram
• kg
3. time
• seconds
• s
4. thermodynamic temperature
• kelvin
• K
5. amount of substance
• mole
• mol
6. metric system
system instrumental
7. velocity (speed)
length/time
8. area
l x l
9. volume
area x length
10. density
mass per unit volume
11. density is measured in....
• g/vol.
• g/cm3
• g/mL
12. dm3=...
1L=1000dm3=1000mL
13. density of water at 25 degrees C=
1.00 g/cm3
14. 4 rules of significant digits
• digits other than 0 are always significant
• 1 or more final 0s used agter the dec are alwats significant
• 0s between 2 other significant digits are significant
• 0s used solely for spacing the sec are not significant
15. significant digits rule in chemistry
every math prob will have an answer in 3 significant digits
16. when a number has five or more places....
use scientific notation
17. accuracy
how close a measurement is to its actual exact value
18. precision
how close a set of measurements are to each other
19. % error
copoares your experimental value to a known value
20. % error equation
|your value-known value|/known value x 100
21. qualitive measures
when you describe an object without using meausrements
22. quantitive measures
when you sescribe an object using measurements
23. temperature
• the measurements of the average kinetic energy of particles in an object
• the higher the kinetic energy, the higher the temp.
24. heating
the process in which kinetic energy is in increased
 Author: mnmitch ID: 34887 Card Set: chem. chapter 2 Updated: 2010-09-15 12:39:19 Tags: chemistry Folders: Description: chapter 2 Show Answers: