CHAPTER 7

What 3 statements describe photons

A photon can transfer momentum to another particle in a collision, Photons are particles of electromagnetic radiation and Each photon has a specific energy, frequency and wavelength

An example of diffraction is when light passes through

A pinhole

What is a Blackbody

An ideal object that absorbs all radiation

Which properties are related to the amplitude of an electromagnetic wave

Brightness and Intensity

What shape are P orbitals

Dumbbell (z axis, up and down)

What is the equation for the relationship between energy and frequency

E=hv

Visible light and radio waves are both examples of ______________ radiation, which has a dual nature, possessing the properties of both _________ and waves

Electromagnetic and particles

Why are electrons restricted to certain discrete energy levels within the atom

Electrons have wavelike motion and are restricted to certain energy states associated with specific wavelengths

Temperature is related to ______ while color is related to both _________ and __________

Energy, frequency and wavelength

The closer electrons are to the nucleus the ______ they go

Faster

The _________ of a wave is the number of wave cycles per second. This quantity is given the symbol v and has units of s-1 or __

Frequency and Hz

Which properties determines the color of visible light

Frequency and Wavelength

The speed of a wave is determined by multiplying the

Frequency x Wavelength

Amplitude

Height of the crest or depth of the trough (higher intensity = brighter)

Shorter wavelength =

Higher frequency

Wavelength and frequency are _________ proportional to each other. As wavelength increases, frequency will ________

Inversely and Decrease

What is the Uncertainty principle

It's impossible to simultaneously know the position and momentum (massxspeed) of a particle

What is wave-particle duality

Matter and energy are different forms of the same entity, all matter exhibits wavelike motion and Energy and mass can be interconverted

What are two facts about photons

Matter cannot absorb or emit a fraction of a photon and A photon is a particle of electromagnetic radiation

Light that consists of a single wavelength or frequency is called _____________ where light consisting of many wavelengths is _____________

Monochromatic and Polychromatic

Does the quantum number l have negative values

No

A region of 0 electron density in an orbital is called a

Node

What 2 statements describe d orbitals

Only possible for n>3 and d orbitals always occur in groups of 5

The phenomenon where an electric current is produced by shining a light on a metal plate is called the _____________ effect. The minimum frequency required to cause a current to flow is called the _________ frequency. The frequency depends on the identity of the metal used

Photoelectric and threshold

Which wavelengths have non-ionizing radiation (Causes heating and Temp goes up with intensity)

Radio, Microwave and Infrared

When a wave moves from one medium into another at an angle other than 90 degrees the wave will change direction and continue to follow a new straight line path. This is known as __________ and is responsible for the __________ of white light into its component colors when it passes through a prism

Refraction and Dispersion

What shape are S orbitals

Spherical

What is diffraction

The apparent bending of light around the edge of an object in its path

Wavelength

The distance between any point on a wave and the corresponding point on the next wave (m/s)

What is the photoelectric effect

The emission of electrons from a metal when light shines on the metal

How is energy absorbed by an atom

The energy of the absorbed radiation must match the difference between the 2 energy states of the atom

What is probability density

The function by which we determine the chances of finding that object in a certain time and space

What does Amplitude mean

The height of a wave

Frequency

The number of complete waves that pass a given point per second (Hz)

What is wave function

The quantum state of any object and how it behaves in a system

What statements correctly describe the deBroglie wavelength for a particle

The smaller the object, the closer the wavelength is to the size of the object, Wave behavior is most obvious for very small particles and The larger the mass of the particle the smaller its wavelength

What does it mean for energy to be quantized

There is a basic unit of energy that cannot be subdivided further

Which wavelengths have Ionizing radiation (Interacts with atoms, causes tissue and genetic damage)

Ultraviolet, X-Ray and Gamma rays

An example of refraction is when light passes through

Water

Shortest to longest wavelengths

X-Ray, UV Radiation, Visible light, IR Radiation and Radiowaves

What is a threshold frequency

the minimum frequency of light required to produce the photoelectric effect