Chem 3 exam

Question 1

Electromagnetic radiation

Answer 1

the energy that travels through alternating magnetic and electric waves

Question 2

frequency

Answer 2

the number of cycles a wave under goes per second.

Question 3

frequency units

Answer 3

Hertz (1/second) or S^-1

Question 4

Wavelength

Answer 4

the distance between one point on a wave to the next

Question 5

Wave unit

Answer 5

expressed as nanometer= 10^-9

Question 6

speed of wave(c)

Answer 6

= to frequency(v)*wavelength

Question 7

speed of light

Answer 7

c=2.99x10^8 m/s

Question 8

Rafraction

Answer 8

The redirection of a wave as it passes from one medium to another. Except at 90 degree angles

Question 9

Diffraction

Answer 9

the bending of waves around obstacles

Question 10

Photoelectric effect

Answer 10

The release of electrons from a material when light hits it, creating an electric current.

Question 11

Photon

Answer 11

energy packet of electromagnetic radiation

Question 12

Bohr model limitations

Answer 12

only works for one electron systems

Question 13

Principal quantum number(n)

Answer 13

Specifies the energy level

Question 14

Angular momentum quantum number(l)

Answer 14

specifies orbital shape and sub level

Question 15

Magnetic quantum number(m)

Answer 15

-l to +l describes the orientation of the atomic orbital

Question 15

Pali exclusion principle

Answer 15

No two electrons in the same atom can have the same number of electrons

Question 16

atomic size Atributes

Answer 16

atomic size decreases as you move left to right and down to up.

Question 17

Ionization energy atributes

Answer 17

increases as you move left to right and decreases moving down a group.

Question 18

paramagnetic

Answer 18

Species with unpaired electrons

Question 19

diamagnetic

Answer 19

Species having all paired electrons and are
unaffected by an external magnetic field.