WaVeS
Out of the following options, (a) which has the smallest frequency and (b) which has the smallest wavelength?
1. Visible light, 2. UV light, 3. radio/TV waves, 4. IR light, 5. x-rays, 6. microwaves
Draw spectrum on board.
(a) Radio and TV waves have the smallest frequency.
(b) X-rays have the smallest wavelength.
Give the difference between mass number and atomic number, demonstrating with an example.
Mass number is protons + neutrons, atomic number is just the number of protons.
DAILY DOUBLE!
If light wave A has a higher energy than light wave B, which will have a higher frequency and which will have a higher wavelength?
A will have a higher frequency, B will have a higher wavelength.
Convert 4005 mm to yards.
4.380 yards
What is the energy of a photon if the frequency is 2.50 * 1016 Hz (sec-1)? (h= 6.626 * 10-34 J* sec)
The energy is 1.66* 10-17 J.
How many protons, electrons, and neutrons are in 142Xe?
54 Protons, 54 Electrons, and 88 neutrons.
If the wavelength of a beam of light is 451 nm, what is the frequency? (c= 3.00* 108 m/sec)
6.65 *1014 Hz (sec-1)
(g) Na + Br = NaBr
initial 23.0 85.0 0
chg. -23.0 ?b? +102.9
final ?a? ?c? 102.9
a- 0, b- 79.9 g, c- 5.1 g
If a photon has an energy of 6.74 * 10-18 J, what will the frequency be? (h= 6.626 *10-34)
1.02* 1016 Hz (sec-1)
WITHOUT NOTES (as team)-
Give 1) full scientific method, 2) organization of matter, and 3) states of matter. Please illustrate at least one of these parts.
1) Observation, hypothesis, experimentation, theory, law, 2) Pure Substances- Elements and Compounds, Mixtures- Homogeneous and Heterogeneous, 3) liquid, solid, gaseous