Free Printable Electrons and Light

Worksheets

Electrons and Light

Total questions: 14

Worksheet time: 12mins

Name

Class

Date

Consider the light illustrated in model 1. Which color represents the longest wavelength? (#6a)

The reds

The violets

The oranges

The blues

Consider the light illustrated in model 1. Which color represents the shortest wavelength? (#6b)

The reds

The violets

The oranges

The blues

Which of the following sentences describes the relationship between wavelength and energy of light? (#6c)

As wavelength gets shorter the energy of light increases

As wavelength gets shorter the energy of light decreases

Electrons and protons ______ each other (#14)

attract

repel

As an electron gets closer to the nucleus the _______ to the nucleus gets _____. (#15)

attraction; weaker

attraction; stronger

repulsion; weaker

repulsion; stronger

For an electron to move from an energy level close to the nucleus to an energy level far from the nucleus it would need to ____ energy. (#16)

gain

lose

For an electron to move from an energy level far from the nucleus to an energy level close to the nucleus it would need to ____ energy. (#17)

gain

lose

Consider the transition of n=5 to n=2 on the Bohr model of the hydrogen atom. This electron transition ____ energy. (#19a)

releases

absorbs

Consider the transition of n=5 to n=2 on the Bohr model of the hydrogen atom. This electron moves from a ____ energy state to a ____ energy state. (#19b)

lower; lower

higher; higher

higher; lower

lower; higher

10.

Consider the transition of n=5 to n=2 on the Bohr model of the hydrogen atom. This transition gives of what color light?

violet

blue-violet

blue-green

red

11.

Propose a hydrogen electron transition that involves light with a wavelength in the ultraviolet(UV) range (10-400nm).

the transition from energy level 6 to level 1

the transition from energy level 6 to level 2

the transition from energy level 2 to level 6

the transition from energy level 1 to level 6

12.

Propose a hydrogen electron transition that involves light with a wavelength inn the infrared(IR) range (1000-106nm)

the transition from energy level 3 to level 2

the transition from energy level 5 to level 4

the transition from energy level 2 to level 3

the transition from energy level 4 to level 5

13.

Which elements are present in unknown "w"?

lithium, sodium

sodium, helium

lithium and sodium

cadmium and sodium

14.

The arrows of which letters illustrate emission of energy by an electron?

A, B, and D

A, B, and C

A, C, and E

B, D, and F

100 %

Electrons and Light

Total questions: 14

Worksheet time: 12mins

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