FIREWORKS LABUnit: Electron Configuration

BELLWORK

Instructions:• Grab your lab notebook from the

demo table. • On a new page, title the lab

“Fireworks Lab”

Claim: • Write/Pair/Share:

What do you think makes fireworks have different colors? Explain your answer in detail.

AGENDA AND OBJECTIVE

Agenda• Write claim for lab• Create your own procedure to test

your claim• Get your procedure approved by

me• Execute lab• Answer discussion questions

Objective• SWBAT prove or disprove their own

claim about how fireworks get their different colors by answering discussion questions using their observations and data collected in lab.

MATERIALS FOR FIREWORKS LAB• Bunsen burner• Wooden splints (9 per group)• 1.0 mol/L solutions of the following metal salts

• Lithium chloride• Barium chloride• Strontium chloride• Calcium chloride• Copper (II) chloride• Sodium chloride• Potassium chloride• Sodium chloride/potassium chloride mixture• An unknown metal chloride solution

• Test tubes (9 per group)• 1 beaker (per group)• Test tube rack

Tape or staple the list of materials given in your lab notebooks.

• By given the list of materials, in your groups, create a procedure in which you can test your claim.

• When finished, show me your procedures, I must approve them before you can start the lab.

• Reminder: • Claim: What do you think makes

fireworks have different colors?

DATA AND OBSERVATIONS

• While doing an experiment, create a table in which you can collect your data.

• This table does not have to be the same as everyone else's, you can be original, whatever works for you.

• Remember to write your observations in complete sentences.

DISCUSSION QUESTIONS

1. Why do different metals have different characteristic flame test colors?2. Most salts contain a metal and a non-metal. Look at the compounds we

tested and determine whether it is the metal or the non-metal that is responsible for the color produced in the flame test for that salt. How can you be sure your answer is correct?

3. What color did the unknown produce in the flame? What was the unknown?

4. Why do the chemicals have to be heated in the flame before the colored light is emitted?

5. How do you think this process is helpful for the fireworks industry?

http://kaffee.50webs.com/Science/labs/Chem/Lab-Flame.Tests.html

!!HOMEWORK!!

• If you did not finish the discussion questions, make sure to finish them for homework. We will be discussing them tomorrow.