elements pro/neu/elec, spectrum, valence electrons
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| how to find the atomic mass | Average of protons and neutrons
🗑
|
||||
| how to find the atomic mass number | add protons and neutrons together
🗑
|
||||
| why do electrons not count towards the atomic mass? | electron's are so small their weight is insignificant
🗑
|
||||
| how to find the number of neutrons | atomic mass (rounded) - the number of protons
🗑
|
||||
| define an ion | atom with a net electric charge due to the gain or loss of electrons
🗑
|
||||
| how to find the number of electrons | protons minus the charge (divided by -1)
🗑
|
||||
| define atomic mass | the weighted average of all isotopes
🗑
|
||||
| how much is the atomic mass unit in comparison to the carbon-12 atom? | atomic mass unit=1/12th the mass of a carbon 12 atom. (carbon has 6 protons and 6 neutrons)
🗑
|
||||
| how to determine the atomic mass | %=abundance * isotope
+
%=abundance * isotope
=atomic mass
(abundance= % in regular number form)
🗑
|
||||
| how to determine which isotope is the most common out of a distribution | go to the periodic table and look at the atomic mass, round it to the isotope that has the nearest number
🗑
|
||||
| what louis de broglie discover | the slower an electron moves and the faster an electron moves, the more it acts like a particle and the more it acts like a wave (respectively)
🗑
|
||||
| what did Erwin schrodinger discover | there are different sizes depending on their energy, and different types of orbitals depending on shape of wavelength
🗑
|
||||
| what are the different letters of the probability clouds | s-clouds=sphere path, p-clouds=double pea in a pod shape (infinity symbol)
🗑
|
||||
| how is the letter of the probability cloud formed | electron runs along the wavelength, then the nucleus in the middle of the wavelength pulls the electron back (- and + charge)
🗑
|
||||
| Heisenburg Uncertainty principle | there is no way to find out the position AND velocity of an electron at the same time.
🗑
|
||||
| what does "v" represent in terms of light waves? | frequency
🗑
|
||||
| define ㅅ | wavelength
🗑
|
||||
| define c | speed of light (3.0x10^8)
🗑
|
||||
| define e | energy
🗑
|
||||
| define h | planks constant (6.626x10^-34)
🗑
|
||||
| equation for frequency | V=c/ㅅ
🗑
|
||||
| equation for energy (2) | E=hv or E= hc/ㅅ
🗑
|
||||
| What causes the light's color to be seen? | phosphorus absorbing UV light and remitting it as visible light.
🗑
|
||||
| What was Bohr's explanation or the atomic spectrum | The energy of an electron depends on its distance from the nucleus.
🗑
|
||||
| ground state | electron is closer to the nucleus; has less energy
🗑
|
||||
| excited state | electron has absorbed energy and moved AWAY from nucleus.
🗑
|
||||
| Does the transition from ground to excited state cause any light to be emitted? | No, it's just like charging a battery
🗑
|
||||
| What is ionization energy | When there is too much energy in an electron , it will pop out of the atomic spectra (therefore meaning no color emitted)
🗑
|
||||
| how many energy rings does s, p, d, and f have? | 1, 3, 5, 7
🗑
|
||||
| Define electron configuration | The position of an atom's electrons around the nucleus
🗑
|
||||
| What is the Aufbau Principle | Electrons fill orbitals with the lowest energy requirements. each ring=quantum.
🗑
|
||||
| Pauli Exclusion Principle | An orbital will only hold 2 electrons
🗑
|
||||
| what causes the form of the orbitals? | an electron is traveling in a wavelength form and the nucleus that is in the middle of the wavelength pulls the electron back, creating a mirrored path of the electron's original path.
🗑
|
||||
| inside the orbital, what are the two electrons doing? | spinning in different directions, away from each other (opposite charges)
🗑
|
||||
| what causes the two electrons to be a little attracted? | Electrons have opposite poles facing each other, so the poles connect, but that doesn't connect the negative charges.
🗑
|
||||
| Hund's Rule | Each orbital in a sub-level is single occupied before any are doubly occupied.
🗑
|
||||
| millikan discovery | discovered weight of electron and exact charge
🗑
|
||||
| Democritus discovery | said that all thing are made up of their own atoms
🗑
|
||||
| define orbital | area of probability where the electrons are found
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
allyson.lee
Popular Chemistry sets