Flashcards
Chemistry - Atomic Structure
Cards in this deck (18)
- 1What are the main components of an atom?Protons, Neutrons, Electrons
- 2Relative mass and charge of protons, neutrons and electronsProton = + 1
Neutron = neutral 1
Electron = - 1/1836 - 3Define mass numbertotal number of protons and neutrons in an atom
- 4Define atomic numberthe number of protons in an atom
- 5Describe the behaviour of protons, neutrons and electrons in electric fieldsProtons = positively charged so defelcted on a curving path towards negative plate
Neutrons = no charge so would continue in straight line
Electrons = negatively charged so would be deflected on a curving path towards a positive plate - 6Define isotopeatoms which have the same number of protons but different mass number
- 7Define shells(energy levels) there are 4
- 8Define subshellwhat each shell/energy level is split into
- 9Define orbitalA region of spaces around the nucleus that can hold up to 2 electrons
- 10Define elctron configuarationused to show homw many subshells are occupied
- 11what are the 4 types of orbitals?s,p,d,f
- 12what shape are: s orbitals p orbitalss orbitals = spherical shape
p orbitals = dumb bell shape - 13Define 1st ionisation energyenergy requires to remove one mole of loosely held electrons from one mole of gaseous atoms to produce one mole of gaseous ions with a charge of 1+
- 14equation for first ionisation energyX(g) -> X+(g) +e-
- 15How does the charge on the nucleus affect the size of ionisation energymore protons in nucleus = more porsitively charged nucleus = electrons more strongly attracted
- 16how does the distance of the electron from the nucleus affect the ionisation energymore shielding so weaker ionisation energy
- 17how does the number of electrons between outer electrons and the nucleus affect ionisation energy?the more electrons = the more shielding = less attraction
- 18what happens to ionisation energy as you go down a group?ionisation energy falls
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- A level Chemistry Flashcards on Chemistry - Atomic Structure, created by lucy latuske on 04/03/2018.
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- lucy latuske
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