1. Unit 1 Review

2. Complete the following metric facts
1 m = ______ cm
1 m = 100 cm
_______ g = 1 kg
1000 g = 1 kg
1 hL = _____ L
1 hL = 100 L
_________ µm = 1 m
1,000,000 µm = 1 m

3. How many sig figs are in the following measurements?
672 mL 3
10 g 1
130.0 km 4
0.004 m 1
42.8 L 3
3030 g hL 5

4. Uncertainty
Explain how you determine the uncertainty of a measuring instrument.
+/- half the distance between the smallest markings

5. Uncertainty What is the uncertainty of this instrument?
+/- 0.5 mL (the smallest mark is every mL)

6. What is the mass (with uncertainty)?
Read the mass from the triple beam balance. Include uncertainty.
g +/ g
Which is the
uncertain digit?
The 0

7. Accuracy & Precision
Draw a picture for representing each

8. Accuracy & Precision
Describe each scenario in terms of accuracy and precision (high or low for each).

9. How many centimeters are there in 1.23 x 10-6 kilometers?

10. How many inches are there in 355 millimeters? (Fact: 1 inch= 2.54 cm)

11. How many miles are there in 3. 44 x 108 inches. There are 0
How many miles are there in 3.44 x 108 inches? There are 0.61 miles in 1 km). (Fact: 1 inch= 2.54 cm) (Fact: 1 mile= 0.61 km)

12. When there are 0.0314 moles of candy canes how many candy canes are there?

13. If there are 9.6x1015 particles of sugar in a solution then how many moles of sugar are there?

14. Perform each calculation and round to correct number of significant figures

15. Match the following Sand and water Carbon dioxide Salt water solution
Copper wire
Element
Compound
Homogeneous mixture
Heterogeneous mixture

16. Mixture Separation
Explain the difference between evaporation and distillation
Evaporation lets you keep the solute (solid at room temperature), Distillation lets you keep a liquid

17. Mixture Separation
What is one mixture (other than sand and salt water) that you could separate using Filtration?

18. Define
Insoluble
Can’t dissolve in water (will stay a solid, can be separated by filtration)
Soluble
Can dissolve in water (can be separated by evaporation)
Solution
Something that is dissolved in water (the mixture)
Precipitate
Newly formed solid (because of a chemical reaction, can be separated by filtration)

19. Moles! List the three conversion factors you know about moles: 1 mol =
6.02 x 1023 particles (atoms, molecules, oranges)
22.4 L of gas (at Standard Temperature and Pressure)
Mass in grams from the periodic table

20. Graphing
Something about a graph…my brain’s done for the night…