1. Do Now: Sit in your lab groups from yesterday 1. What are the four signs/indicators that a chemical change has occurred 2. Which sign(s) did you see in the exploding stomach lab yesterday?

2. Options for Review 1. Bingo Review Game with teams 2. Work on review worksheet independently or with a partner quietly on the other side of the room

3. Review Bingo! 10/9

4. Step 1: Draw a 5x5 table that takes up the entire half sheet of paper FREE

5. Step 2: Select 24 of the following answers to fill in the remaining blanks of your table (in any order that you wish) – USE A PEN! Accuracy Precision Oxygen gas CFCs Stratosphere Qualitative Quantitative Control Independent variable Dependent variable Graduated cylinder Meter stick Scale Meter Liter Gram 2.74% 20.5% 14% 15% 5.45 19.3 8.96 7.88 42.3 17.2 2.4 4.9 20.2 45.923 1365 80

6. How it works 1. I will ask a question, you will work with your group to answer the question on the whiteboard. 2. Every group needs to have attempted to answer the question before the answer is revealed 3. If it is a calculation, you must show your work on the board. Groups may be asked to work the problem out for the class

7. How it works: 4. In order to cross off a box on your bingo card: Your group must have the correct answer on the whiteboard The answer must be on your card 5. If someone has a bingo, their team wins an extra credit point on the exam and, time permitting, we’ll continue playing.

8. Expectations: Be respectful All decisions are final Do your best…and then you’ll rock the test! (haha it rhymes)

9. Question 1 This word means how close a set of measurements are to each other Precision

10. Question 2 If Joseph measured a room to be 32.0 feet in length, but it was actually 32.9 feet in length, what is the percent error? 2.74%

11. Question 3 The ozone layer is located in what layer of the atmosphere? stratosphere

12. Question 4 If an object has a mass of 43.6 g and a volume of 8.00 mL, what is the density of the object? 5.45 g/mL

13. Question 5 If the initial volume in a graduated cylinder is 10.8 mL and the volume increases to 53.1 mL after we add an object, what is the volume of the object? 42.3 mL

14. Question 6 If 5 batches of cookies feeds 24 people, how many batches of cookies are needed to feed 97 people? 20.2 batches

15. Question 7 Ozone is made from what? Oxygen gas

16. Question 8 A piece of gold has a volume of 67.0 mL and a mass of 1293.1 g. What is the density of gold? 19.3 g/mL

17. Question 9 If the initial volume in a graduated cylinder is 24.5 mL, and the volume increases to 41.7 mL after we add a rock to the cylinder, what is the volume of the rock? 17.2 mL

18. Question 10 What term is defined as “the thing that changes as a result of what the scientist changes”? dependent variable

19. Question 11 If Matthew estimated that a piece of deep dish pizza weighed 237g, but it really weighed 298g, what is the percent error? 20.5%

20. Question 12 A sample of pennies has a mass of 39.0 g and a volume of 4.35 mL. What is the density of the pennies? 8.96 g/mL

21. Question 13 Samuel noticed that there are 36 desks in the classroom. What kind of observation is this? quantitative

22. Question 14 What term is defined as “the thing that the scientist changes in an experiment”? independent variable

23. Question 15 If there are 1000 mL in a liter, 45,923 mL is how many liters? 45.923 L

24. Question 16 Brenda noticed that Yosselin was wearing a brand new pair of white shoes. What type of observation did Brenda make? qualitative

25. Question 17 10 nails have a total volume of 5.65 mL and a mass of 44.5 g. What is the density of the nails? 7.88 g/mL

26. Question 18 What is the standard unit used to measure length? meter

27. Question 19 What term is defined to be “the standard for making comparisons”? control

28. Question 20 Lauren estimated that she could drink 40 ounces of juice in a minutes, but she could only drink 35 ounces. What is the percent error? 14%

29. Question 21 If we start off with 9.0 mL of water in a graduated cylinder and we add an object so that the volume increases to 11.4 mL, what is the volume of the object? 2.4 mL

30. Question 22 If there are 5 teachers for every 155 students, how many teachers are needed for 2480 students? 80 teachers

31. Question 23 Eric thought the bus would arrive in 20 minutes, but it really took 17. What is the percent error? 15%

32. Question 24 If a car goes 65 miles per hour, how many miles can the car drive in 21 hours? 1,365 miles

33. Question 25 This word means how close a measurement is to the actual value accuracy

34. Question 26 What is the standard tool used to measure volume? Graduated Cylinder!

35. Question 27 What man-made chemicals increase the size of the hole in the ozone layer? CFCs

36. Question 28 If there is 39.5 mL of water in a graduated cylinder and the volume increases to 44.4 mL after we add an object to the cylinder, what is the volume of the object? 4.9 mL

37. Question 29 What is the standard tool used to measure mass? Scale

38. Question 30 This term means a ratio that relates two different units of measurement Conversion Factor

39. Question 31 What is the standard tool used to measure length? Meter stick or ruler

40. Question 32 What is the standard unit used to measure volume? liter