Karteikarten
elements and atmoic structure
Karten in diesem Stapel (28)
- 1what is an element?a substance that contains only 1 type of atom
- 2what does the atomic mass tell us about an element?it's number of protons and neutrons
- 3what does the atomic number tell us about an element?the number of protons in an atom
- 4describe the composition of an atoma nucleus of protons and electrons surrounded by electrons
- 5what is the relative charge and mass of a proton?charge- +1
mass- 1 - 6what is the relative charge/mass of a neutron?charge- 0
mass- 1 - 7what is the relative charge/mass of an electron?charge- -1
mass- 1/2000 - 8why does a neutral atom have the same number of protons and electrons?because protons and electrons are the only charged particles in the atom so their numbers must be equal to balance the charge
- 9why are electrons important in an atom?they take part in bonding
- 10how many electrons do each shell hold?shell 1- 2 electrons max
shell 2- 8 electrons max
shell 3- 8 electrons max - 11a chlorine atom has 17 electrons. how would we right this in short hand?2,8,7
- 12what does the number of electrons in the outer most shell tell us?the elements group number in the periodic table (e.g all atoms in group 7 have 7 atoms in their outer most shell)
- 13what does the number of shells filled tell us about an element?It's row in the periodic table
- 14why are noble gasses highly unreactive?because they have a full outer most shell and are therefore very stable
- 15what must an atom be in order to have a full outer most shell? give examples of these types of atomthey must be diatomic
02, H2, Cl2, Br2 - 16why do ions form?atoms are stable when they ahve a full outer most shell. Atoms will bond in order to lose/gain the electrons they need to become stable. Charged atoms (ions) form as a result
- 17if a metal bonds with a non metal, what happens (in terms of electrons moving)the electrons are passed from the metal to the non metal
- 18what is the charge of a metal ion?positive
- 19what is the charge of a non metal ion?negative
- 20what is the structure of an ion the same as?the nearest noble gas
- 21sodium's atomic number is 11. now many protons does it have? why?11 because atom's have no overall charge, therefore the electrons and protons must be equal
- 22sulfur's atomic number is 16. a)what is it's electronic structure? b)what is the structure of the nearest noble gas? c)what is the electronic structure of the ion? d)what is the overall charge?a) 2,8,6
b)2,8,8
c)2,8,8
d)S2- because it's gaining 2 electrons to become stable (2 negatively charged particles) - 23how would you find the charge of a metal ion? a non metal ion?the group number= the charge of the ion
the charge= the group number- 8 - 24name 5 ions with the charge '+'lithium
hydrogen
sodium
potassium
Ammonnium (NH4+) - 25name 5 ions with the charge '2+'calcium
magnesium
copper
zinc
Iron (II) - 26name 2 ions with the charge '3+'Iron (III)
Aluminium - 27name 5 ions with the charge '-'fluoride
chloride
bromide
hydroxide
nitrate - 28name 4 ions with the charge '2-'oxide
sulphide
sulfate
carbonate
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- Beschreibung
- Karteikarten am elements and atmoic structure, erstellt von ashley.amber am 30/05/2013.
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- ashley.amber
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