CHEM-TO-GO LESSON 7: ENERGY OF

ELECTRONS

CONVERSATION STARTER

Materials:1) Energy of Electrons video notes2) Unit 2 Practice Packet3) Pencil and calculator

Collaborative Analysis Experience

Students will apply knowledge to a real-world situation.

Any questions about the Atomic Mass Calculations Practice?

ADVICE: #2 doesn’t require any math. #5 is really tough! I will help you with it if you can’t

figure it out.

FROM YESTERDAY…

Calculators

Look for any of the following buttons on your calculator. (They may be 2nd functions.) EE EXP x10n

Use these buttons to enter scientific notation into your calculator.

NOTE: I know that many of you believe that the ^ button works, but it is inconsistent with our calculations. You’ll only get about 50% correct.

Useful to know how much energy is coming out of an atom

Useful to know how much energy to put into an atom to achieve a particular color

Useful to calculate the energy

c = λν

c = 3.0x108 m/s

E = hν

h= 6.626x10-34 J·s

Collaborative Analysis Experience

Students will adapt knowledge to an unpredictable situation.

Flame Test Experiments and the Electromagnetic Spectrum

As we watch the video, let’s:1) Estimate the wavelength of the light based on

its color2) Calculate the frequency of the light3) Calculate the energy of the light

Collaborative Analysis Experience

Students will apply knowledge to a real-world situation.

Collaborative Analysis Experience

Students will apply knowledge to a real-world situation.

Let’s learn how

fireworks are made.

Collaborative Analysis Experience

Solve the “Practice Problems: Wavelength, Frequency, Energy Content of One Quantum of Light” questions (1-7, #4 disappeared).