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Instructions for using this template. Remember this is Jeopardy, so where I have written “Answer” this is the prompt the students will see, and where.

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Presentation on theme: "Instructions for using this template. Remember this is Jeopardy, so where I have written “Answer” this is the prompt the students will see, and where."— Presentation transcript:

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2 Instructions for using this template. Remember this is Jeopardy, so where I have written “Answer” this is the prompt the students will see, and where I have “Question” should be the student’s response. To enter your questions and answers, click once on the text on the slide, then highlight and just type over what’s there to replace it. If you hit Delete or Backspace, it sometimes makes the text box disappear. When clicking on the slide to move to the next appropriate slide, be sure you see the hand, not the arrow. (If you put your cursor over a text box, it will be an arrow and WILL NOT take you to the right location.)

3 Choose a category. You will be given the answer. You must give the correct question. Click to begin.

4 Click here for Final Jeopardy

5 Vocabulary Molecular Mass Mole Map Empirical Formulas 10 Point 20 Points 30 Points 40 Points 50 Points 10 Point 20 Points 30 Points 40 Points 50 Points 30 Points 40 Points 50 Points Percent Composition

6 Avogadro’s Number

7 What is 6.02 x 10 23 ? Board

8 A sample that has water in it

9 What is a hydrate? Board

10 A salt without water

11 What is an anhydrous salt? Board

12 The sum of masses for each element in a compound in a mole

13 What is molar mass? Board

14 The smallest ratio of elements in a compound

15 What is empirical formula? Board

16 What are the 3 steps to find the molecular mass of a compound?

17 What is 1) count the number of each element 2) Multiply # of each element by its mass 3) Add them together? Board

18 The formula H 2 O 2 is an example of

19 What is a molecular formula? Board

20 What is the total number of atoms of oxygen in the formula Al(ClO 3 ) 3 ∙ 6 H 2 O?

21 What is 15 atoms of oxygen? Board

22 In the compound Cu 2 O 3, the ratio of copper to oxygen is…(need correct units)

23 What is 2 moles of copper to 3 moles of oxygen? Board

24 In a sample of oxygen gas at STP, which represents the greatest number of molcules: A)One mole B)One gram C)One molecule D)One liter

25 What is a) One mole? Board

26 The percent by mass of nitrogen in Mg(CN) 2 is equal to:

27 What is 36 %? Board

28 What is the approximate percent composition by mass of CaBr 2 ? Formula mass =200

29 What is the 20 % calcium and 80% bromine? Board

30 What are the steps to determine the percent by mass of a compound?

31 1)Determine the molar mass 2)(Mass of element/ FM of compound) x 100= Board

32 The ratio by mass of sulfur to oxygen in SO 2.

33 What is 1:1? Board

34 A student determining the percent by mass of water in a hydrated crystal obtained the following data: Mass of crystal before heating……5.0 g Mass of crystal after 1 st heating…..4.0 g Mass of crystal after 2 nd heating….4.0 g WHAT IS THE PERCENT BY MASS OF WATER IN HYDRATE?

35 What is 20%? Board

36 The mass of two moles of H 2 SO 4, expressed in grams, is equal to (1) 98/2 (2) (6.02x10 23 )/ 2 (3) 2 × 98 (4) 2 × (6.02 X 10 23 )?

37 What is (3) 2 × 98 ? Board

38 The mass in grams of 1.00 mole of CaSO 4 2H 2 O is?

39 What is 172 g? Board

40 Which quantity in moles is equivalent to 39 grams of LiF?

41 What is 1.5 moles ? Board

42 You have 3 grams of CO 2. How many particles do I have?

43 What is 3 x 6.02 x 10 23 ? Board

44 Which sample contains the same number of atoms as 12 grams of carbon? 12 g Mg 5 g Ne 40 g Ar 2.0 g He

45 What is 40 g Ar ? Board

46 An example of an empirical formula is ( A) C 2 H 2, (B) H 2 O 2, (C) C 2 Cl 2, (D) CaCl 2

47 What is (D) CaCl 2 ? Board

48 The empirical formula of a compound is CH 3 and its molecular mass is 90. What is the molecular formula of the compound?

49 What is C 6 H 18 ? Board

50 An example of a molecular formula but not an empirical ( A) C 2 H 4 O 6, (B) Mg(OH) 2, (C) CCl, (D) CaCl 2 ?

51 What is ( A) C 2 H 4 O 6 ? Board

52 The empirical formula of a compound is CH 2 and its molecular mass is 70. What is the molecular formula of the compound?

53 What is C 5 H 10 ? Board

54 Write the empirical formula for the compound, CoCl 2 ·6H 2 O?

55 What is CoCl 2 ·6H 2 O? Board

56 Make your wager

57 A student heats a 243 g sample of BaCl 2 ∙ 2H 2 O… A)What was the percentage by mass of water in hydrated crystal? B)If all the water is evaporated, what will the expected mass be?

58 What is a)15 % b)207 grams


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