Chemistry 11

Today we got back our quick question quiz on measurement and sig. figs.   We had some difficulty with this so got to write a re-quiz with a partner.

Unit 1 Review.  We had time to work on this.   This will be due on Thursday when we write the test on Measurement and Matter Intro.

Unit 1 Review full answers in the classroom.  Answer to some of the Unit 1 review:

3) All measured values have some estimate as part of the measurement.  The estimated number is uncertain.

4a) 7.37 m +/-0.05 m    4b) 7.12 L +/-0.025 L    4c) 4.160 g +/- 0.1 g

5a) 105 mm    5b) 9 km/hr     5c)53000 µm    5d) 9.25 x 10⁶   

5e) 0.012 kL     5f) 0.042 kb

6a) 4.95 x 10⁷     6b) 2.003 x 10^-4

  

7a) 5.11    7b) 23 x 10^-3   

7c) 1.68 x 10³   

7d) 2.6