Chemistry Wavelengths

Gamma Rays

deadly to humans

X-rays

Medicine (broken bones)

UV Light

too much exposure leads to skin cancer

Visible Light

the light we can see

Infared (IR)

TV Remotes

Microwaves

rotate water molecules to heat up food

Radio Waves

Sound, lowest energy and longest wavelength

Give an example of a type of light that could damage your DNA

gamma rays, x-rays, or UV

How do microwaves heat up food?

They rotate water molecules which create friction to generate heat.

Which visible colors contains the least energy?

Red

Which visible color contains the most energy?

Violet

Which visible color contains the longest wavelength?

Red

Which visible color contains the shortest wavelength?

Violet

Overall which light wave has the shortest frequency?

gamma rays

Which has a higher frequency: UV Light or IR Light?

UV Light

Which has a longer wavelength: AM waves or FM waves?

AM Waves

What has a longer wavelength: X-rays or Microwaves?

Microwaves

What has a higher frequency: Gamma rays or UV?

gamma rays

What is the origin?

the line running through the center of the wave

What is the crest?

The highest point of the wave

What is amplitude?

The distance between the crest and the origin

What is wavelength?

distance between crests

What is the trough?

Lowest point of the wave

What is the photoelectric effect?

The emission of electrons from a metal when a certain light shines on it

Who discovered the photoelectric effect?

Albert Einstein

What is the meaning of photoelectric?

light electron

What is a quantum of energy?

the amount of energy required to move an electron from one energy level to another (jumping)

When do electrons jump to their ground state?

When they move from a higher energy level to a lower energy level

When to electron jump to their excited state?

When they move from a lower energy level to a higher energy level

What do arrows coming out of the atom represent?

Light being released

When do the arrows coming into the atom represent?

Absorbing energy

What will high energy light do to a metal?

Electrons will bounce off faster

What will more light on a metal do?

It will eject more electrons

How can you see an elements atomic emission spectrum?

prism

What type of light does the Lyman Series use?

UV Light, electrons higher than the first energy level

What type of light does the Balmer Series use?

Visual light, electrons higher than the second energy level

What type of light does the Paschen Series use?

IR