Chemistry Chap 3 review

Chemistry Cap 3 review Concepts

1.     Express a very small number or large number in correct scientific notation with correct sig figs  Know all the sig fig rules especially the zero rules

2.  Know how to multiply two sci notation numbers and round to correct sig figs.

3.      Know how to add or subtract and round using the rule  (not the same as multiplication

4.     know the difference between accuracy and precision and be able to provide examples

5.     be able to state the number of sig  figs in a number

6.     know how calibration affects accuracy, precision and reliability

7.     Interpret numbers to say if they are accurate or precise.

8.     Know the term estimated digit and be able to identify it .  Example which is the estimated digit in 0.809

9.     Know boiling and freezing of water in C and K  and know how absolute zero

10. Know how to convert c to k and K to C

11. Use Dim analysis to calculate a unit in a one step process.  Ex Ex find density in a metal has mass = 2.0 g   and takes up 1.5 ml of volume

12. Use dim analysis to calculate a unit in up to a three step process.  Ex find speed in meter/ sec if given miles per hour .  There are 1600 m/ mi

13. rank prefixes smallest to largest