1. Review for CHAPTER 1 Test Chemistry Mrs. Boules

2. You have 5 seconds from ringing the bell to answer the following questions:

3. How many significant figures does the following value contain? 130. 3

4. .000105000 How many significant figures does the following value contain? 6

5. 4.000 How many significant figures does the following value contain? 4

6. 8.2 X 10 -3 How many significant figures does the following value contain? 2

7. 1000 How many significant figures does the following value contain? 1

8. 50,000. How many significant figures does the following value contain? 5

9. Scientific Notation Which of the following is the correct scientific notation for 0.0005250? a.52.50 X 10 -4 b.5.25 X 10 -4 c.52.50 X 10 -3 d.5.250 X 10 -4 d

10. Which of the following is the correct value for the 8.8 X 10 -3 ? a. 8,800 b. 8,800. c..0088 d..000880 c

11. Please explain the rounding rule when adding and subtracting. The answer must contain as many decimal places as the value with the least number of decimal places.

12. Bring a calculator and a piece of paper for the next question..

13. Please Round Appropriately 418.55 312.12 +.0150 730.68

14. Round the following number to 3 significant figures: 412.5001 413

15. Round the following to 3 significant figures: 5.525 5.52

16. Bring a calculator and a piece of paper for the next question

17. Please Round Appropriately 18.5 X 2.675 49.5

18. What is the density equation? Moving on to ……Density D=Mass Volume

19. In the lab, you were handed a block of lead…..EXPLAIN how would you find the density of this lead block?? Be as thorough as possible

20. Bring a calculator and a piece of paperfor the next question

21. Calculations…. Don’t for get rounding rules!! Calculate the density if a block of copper has a mass of 15.5grams and a volume of 3.5cm 3

22. What is the density of water? 1.00g/ml

23. Name this Symbol: Fe Ca Hg Iron Calcium Mercury

24. Continuation…symbols Na W Sr Sodium Tungsten Strontium

25. What symbol is this element? Fluorine Xenon Francium F Xe Fr

26. Continuation Silver Helium Lithium Ag He Li

27. What are the 4 states of matter? Solid Liquid Gas Plasma

28. What is the equation for converting from Celsius to Kelvin? K= 0 C + 273

29. Bring a calculator and a piece of paper

30. Convert 30. o C to Kelvin. 303K

31. What is the difference between physical and chemical change?

32. Define Element? The smallest, indivisible part of a substance

33. Define Homogeneous Mixture A mixture in which all the parts look similar

34. From the lab…. Indicate if the following is a physical or chemical change: Melting Birthday Candle Wax Adding Hydrochloric Acid to Magnesium Grinding Copper Sulfate P C P

35. Is the following an example of homogeneous or heterogeneous Mixture? Air Italian Dressing Milk Homogeneous Heterogeneous Homogeneous

36. Please study tonight!! Test tomorrow!