DO NOW:

<<-- You have this much time to finish!

Are Cheetos bad for you?How do you know?

Scientific MethodStep 1: Purpose

What do you want to find out??

Are Cheetos bad for you?

Scientific MethodStep 2: Research

Find more information!!enriched corn meal

vegetable oil

salt

sugarMSG

yeast extract

lactic acid

citric acidartificial color

hydrolyzed soy protein

whey “cheddar cheese”onion powder

corn syrup

disodium guanylate: made from dried fish or dried seaweed.carrageenan: made from seaweed.

sodium diacetate

Scientific MethodStep 3: Hypothesis

What do you think will happen??

If... then...

Scientific MethodStep 4: Procedures

How will you test your hypothesis?

Test ONE variable at a time.

Scientific MethodStep 5: Results

What did you find out??

Scientific MethodStep 6: Conclusion

Was your hypothesis correct??

Burj Khalifa Challenge/Lab

Tallest building in the world!

830 meters or 2,723 feet

You are an architect hired to build to fix and improve

this building.

PART 1You have

minutes remaining

STOP!

Measure your tower and answer the post construction questions.

PART 2You have

minutes remaining

Group QuestionsBrainstorm answers to these questions with your group.

Write answers on one sheet of paper.

1. (easy) How tall was your second tower?

2. Was your second tower taller or shorter than the first?Taller? Why was your change successful?

Shorter? Explain why you think your hypothesis was wrong.

3. Some groups will have shorter second towers.Was their experiment worthless?

1. (easy) How tall was your second tower?

2. Was your second tower taller or shorter than the first?Taller? Why was your change successful?

Shorter? Explain why you think your hypothesis was wrong.

3. Some groups will have shorter second towers.Was their experiment worthless?

4. From your experience, does the scientific method make experimentation easier or harder than random guessing?

5. If you had to build a third tower, what would you change? Explain.

NICE!

Don’t forget!

Quickcheck on Thursday:LT1B-LT1D

Atomic mass and numberValence electrons (Bohr, Lewis Models)

Parts of the periodic table