Talk:High School Chemistry/Electrons and Light

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1 In 1900s, scientists found out that different elements made different colored-flames. What can be observed from this?

It depends on the electron's atomic mass.
The arrangement of electrons determine the different colored-flames.
Protons and neutrons both cause these different colors.
This never happened.

2 Complete the measurements.

1. v:

2. λ:

3 What is the speed of light?

4 Fill out the information.

As wavelength increases, frequency

. As frequency increases, wavelength

.

5 Which description fits the description for harmful wavelengths/frequencies?

Long wavelength, high frequency
Short wavelength, short frequency
Short wavelength, high frequency
High frequency, short wavelength

6 Fill out the information.

The visible spectrum goes from

nanometers to

nanometers.

7 Complete the formulas.

1. The mathematical relationship between energy and frequency:

2. The mathematical relationship between wavelength and frequency:

3. What is Planck's constant?

.

8 Max Planck states that energy is quantized, and not continuous. Electromagnetic rays travel in waves and are made out of _____. Atoms can gain or lose energy in small amounts known as _____. Electrons have to ______ energy in order to move up through the orbits and ______ energy in order to move down through the orbits.

photons, quanta, absorb, lose
photons, quanta, release, absorb
photons, quanta, lose, absorb
quanta, photons, release, absorb

9 Complete the blanks with the correct information.

Electrons

to the nucleus are the lowest in energy

10 Who found out that light is made up of photons?

Albert Einstein
Mannhoauf Einzwegol
Carl Bosch
Adolf Friedrich Johann Butenandt

11 Who stated that merely the act of observing an electron changes its position and velocity?

J. J. Thomson
Carl Bosch
Werner Heisenberg
Albert Einstein

12 Which rule requires you to fill up your lowest energy level before moving up to the next energy level?

Hund's rule
Paul exclusion principle
Aufbau