Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

Chem 1 - Atomic Stru

Chem 1 - Atomic Structure

Proton A nucleon of an Atom. Relative Mass of 1, Relative Charge of +1. Defines the ATOMIC NUMBER of an Element.
Neutron A nucleon of an Atom. Relative mass of 1, relative charge of 0. Together with Protons defines MASS NUMBER.
Electron An atomic Particle that surrounds the Nucleus of an atom. Relative mass of 1/2000, Relative charge of -1. The major component of bonding.
Atomic Number The number of Protons in an Atom of an Element.
Mass Number The number of Protons and Neutrons in an atom of an element.
Nucleons Protons and Neutrons of an Atom.
Formulae for MAX number of electrons in a shell: 2n(squared), where n is the shell number.
energy level 1 sub shells: 1s /
energy level 2 sub shells: 1s / 2s, 2p /
energy level 3 sub shells: 1s / 2s, 2p / 3s, 3p, 3d /
Energy Level 4 Sub Shells: 1s / 2s, 2p / 3s, 3p, 3d / 4s, 4p, 4d, 4f /
Write out, in order, the subshells that are filled first up to 4f. 1s - 2s - 2p - 3s - 3p - 4s - 3d - 4p - 4d - 4f. (remember the special diagonal diagram!)
Isotopes Isotopes are atoms of an element that have the same number of protons but different number of Neutrons.
Ions Ions are atoms that have a different amount of electrons to the amount of protons.
Mass Spectrometry Is an analytical technique used to determine the mass of particles.
Name the four stages in Mass spectrometry: Ionisation, Acceleration, Deflection, Detection.
Mass Spec: Ionisation:
Mass Spec: Acceleration:
Mass Spec: Deflection:
Mass Spec: Detection:
First Ionisation Energy The amount of energy required to remove one mole of electrons from one mole of atoms in a gaseous state to give a charge of +1. Measured in kJ mol-1.
Why is the second Ionisation Energy always higher than the first? Because removing an electron from an ion that is already positively charged requires a much greater amount of energy.
What is the trend in first Ionisation Energies going along a period? They generally increase because of increasing nuclear attraction, until you change sub-shell or the spin of electrons changes direction.
What is the trend in Ionisation Energies going down a Group? They decrease because of a large increase of Nuclear Radius and increasing electron shielding.
Atomic Radius The distance from the Nucleus to the outer electron shell.
Electron Shielding.
Created by: mjwilson1988



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards