Flashcards
Atomic Structure
Cards in this deck (17)
- 1ProtonsRelative mass: 1
Relative charge: +1
Location: nucleus - 2NeutronsRelative mass: 1
Relative charge: 0 (neutral)
Location: nucleus - 3ElectronsRelative mass: 1/2000
Relative mass: -1
Location: shells - 4What is the atomic number?The number of protons in and atoms nucleus
- 5What is the mass number?The mass of an atom, equal to the total number of protons and neutrons.
- 6Diagram of an atom
- 7§ *Element ±§ = relative atomic mass
± = atomic (proton) number - 8(±) atomic number gives...number of protons
- 9number of protons is equal toneutrons
- 10Calculate number of neutronsMass number - atomic number
- 11What is an isotope?Atoms of an element containing same number of protons, but different number of neutrons
- 12Mass number =number of protons + number of neutrons
- 13Neutron number =mass number - atomic number
- 14How many electrons can shells in an atom hold1st shell = 2 electrons
2nd shell = 8 electrons
3rd shell = 8 electrons
4th shell = 2 electrons - 15elements in the same group have...the same number of outer electrons
- 16RAM (relative atomic mass) =(mass number of atom 1 x % of atom 1) + (mass number of atom 2 x % of atom 2) + etc
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100 - 17Atoms must have...a neutral charge
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- Year 9 Chemistry Flashcards on Atomic Structure, created by Honor Neville on 10/11/2017.
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- Honor Neville
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