ions%20student
DESCRIPTION
http://notebox.ca/ggmss/uploads/Ions%20student.pptTRANSCRIPT
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red and green are opposites
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assume red and green cancel each other
net color = neutral
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take away one red
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take away one red net color = 1 green
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take away two red
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take away two red net color = 2 green
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net color = neutral
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net color = 2 red
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in this arrangement…
green is trapped inside.Only red ballscan be added ortaken away…
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color = 2 green
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color = 1 red
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color = ?
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3 red
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color = ?
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3 green
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Subatomic Particles (Table 2.1)
Particle Mass (g)
Relative Mass (amu) Charge
Electron (e-) 9.1 x 10-28 0 -1
Proton (p+) 1.67 x 10-24 1 +1
Neutron (n0) 1.67 x 10-24 1 0
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In order to understandwhat ions are,we need to know that…
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++
++
+
the particlesthat make up atomshave either___________________
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++
++
+
net charge = ______
positive and negative are opposites
they cancel each other out
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+
the positive (+) particle is called a
______
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the negative (-) particle is called an
_______
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in an atom,protons ( ) are inthe centerand electrons ( )are on the outside
+
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+
only electrons ( )can be addedor taken away
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this is an atom with5 electrons and
5 protons
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++
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+
the atom is neutral
net charge = ____
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++
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5 (-) and 5 (+) = zero charge (neutral)
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++
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+
charge = ?
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++
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charge = __________
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++
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+
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++
charge = ?
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++
++
+
__________
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WHEN REMOVING ELECTRONS
THE RESULTING CHARGE IS __________
neutral 1+
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THE RESULTING CHARGE IS _________
neutral 2
WHEN ADDING ELECTRONS
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An atom with positive or negative charge
is called andrum roll
____
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Atoms without charge are called ______
Atoms with positive or negative charge
are called _____
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Notice that ONLY the number of e- changes
The number of protons in anAtom NEVER changes
(Only electrons are added or subtracted)
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An ion is an atom, or group of atoms, that has a net positive or negative charge.
______ ion with a positive charge. If a neutral atom loses one or more electrons it becomes a cation.
anion ____________________________Na 11 protons
11 electrons Na+11 protons10 electrons
Cl 17 protons17 electrons Cl-
17 protons18 electrons
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How do we know what charge our ion will have????
We need to look at our Bohr-Rutherford Diagrams
-Most atoms on their own will form ions to complete their outer orbit (energy level)
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Fluorine
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Put simply - An atom wants to have a full outer orbit. To do this they can either:-Lose 1 or more electrons (cation + )
-____________
Or
-Gain 1 or more electrons (anion - )-____________
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How do you know which it will be?It will be whatever is easier-If it has 1 valence electron it will lose 1 and lose its outer orbit easier to lose 1 than gain 7
- If it has 7 valence electrons it will gain 1 to get 8 easier to gain 1 then lose 7!
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IonsWe will only be dealing with groups:
________________**Generally speaking, elements on the left (metals and metalloids) will lose e’ to form cations while elements on the right (non-metals) will gain e’ to form anions **
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10 n0
How to properly draw ions -
• Draw Bohr-Rutherford Diagram• Include protons and neutrons in nucleus• Put square brackets around diagram• Place charge top right
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Naming IonsPositive Ions – ____________________________________________________e.g. Na+ = Sodium Ion
Negative Ions – The name is determined by removing the end and adding idee.g. Oxygen Ion = Oxide ion, Phosphorus Ion = Phosphide ion
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Multivalent Ions
-__________________________(Copper, Iron) but also includes Tin (Sn)
-______________ are possible therefore you need more information
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Multivalent Ions – Write the name using Roman Numerals
-If you are given the Symbol with the charge you can write the name but you must include ____________________________- E.g. Cu4+ = Copper (IV) ion- Ni3+ = Nickel (III) ion-** I=1, II=2, III=3, IV=4, V=5, VI=6, VII=7
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Multivalent Ions – Write the Symbol given the name
-____________________________________________________
-E.g. Lead (IV) = Pb4+
-Cobalt (II) = Co2+
-**Multivalent Ions will always be _________________________
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ETCETERA
ions make up the salt you put on your eggs in
ions are required for your brain to function(ions allow you to see and understand this presentation)
ions affect pH
ions allow you to move
ions keep your blood functioning
the morning