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?

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

Review Bingo!10/9

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

FREE

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

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

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.

Expectations:Be respectfulAll decisions are finalDo your best…and then you’ll

rock the test! (haha it rhymes)

Question 1

This word means how close a set of measurements are to each

other

Precision

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%

Question 3

The ozone layer is located in what layer of the atmosphere?

stratosphere

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

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

Question 6

If 5 batches of cookies feeds 24 people, how many batches of cookies are needed to feed 97

people?

20.2 batches

Question 7

Ozone is made from what?

Oxygen gas

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

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

Question 10

What term is defined as “the thing that changes as a result of what

the scientist changes”?

dependent variable

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%

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

Question 13

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

quantitative

Question 14

What term is defined as “the thing that the scientist changes in an

experiment”?

independent variable

Question 15

If there are 1000 mL in a liter, 45,923 mL is how many liters?

45.923 L

Question 16

Brenda noticed that Yosselin was wearing a brand new pair of white shoes. What type of

observation did Brenda make?

qualitative

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

Question 18

What is the standard unit used to measure length?

meter

Question 19

What term is defined to be “the standard for making

comparisons”?

control

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%

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

Question 22

If there are 5 teachers for every 155 students, how many teachers

are needed for 2480 students?

80 teachers

Question 23

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

15%

Question 24

If a car goes 65 miles per hour, how many miles can the car drive

in 21 hours?

1,365 miles

Question 25

This word means how close a measurement is to the actual

value

accuracy

Question 26

What is the standard tool used to measure volume?

Graduated Cylinder!

Question 27

What man-made chemicals increase the size of the hole in

the ozone layer?

CFCs

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

Question 29

What is the standard tool used to measure mass?

Scale

Question 30

This term means a ratio that relates two different units of

measurement

Conversion Factor

Question 31

What is the standard tool used to measure length?

Meter stick or ruler

Question 32

What is the standard unit used to measure volume?

liter