red and green are opposites assume red and green cancel each other net color = neutral
TRANSCRIPT
red and green are opposites
assume red and green cancel each other
net color = neutral
take away one red
take away one red net color = 1 green
take away two red
take away two red net color = 2 green
net color = neutral
net color = 2 red
in this arrangement…
green is trapped inside.Only red ballscan be added ortaken away…
color = 2 green
color = 1 red
color = ?
3 red
color = ?
3 green
In order to understandwhat ions are,we need to know that…
++
++
+
the particlesthat make up atomshave eitherpositive or negative charge
++
++
+
positive and negative are opposites
they cancel each other out
++
++
+
net charge = zero
+
the positive (+) particle is called a
proton
the negative (-) particle is called an
electron
++
++
+
in an atom,protons ( ) are inthe centerand electrons ( )are on the outside
+
++
++
+
only electrons ( )can be addedor taken away
++
++
+
this is an atom with5 electrons and
5 protons
++
++
+
the atom is neutral
net charge = zero
++
++
+
5 (-) and 5 (+) = zero charge (neutral)
++
++
+
++
++
+
++
++
+
charge = ?
++
++
+
charge = 1- (one minus)
++
++
+
++
++
+
++
++
charge = ?
++
++
+
2+ (two plus)
WHEN REMOVING ELECTRONS
WHEN REMOVING ELECTRONS
THE RESULTING CHARGE IS POSITIVE
WHEN REMOVING ELECTRONS
THE RESULTING CHARGE IS POSITIVE
neutral 1+
WHEN ADDING ELECTRONS
THE RESULTING CHARGE IS NEGATIVE
WHEN ADDING ELECTRONS
THE RESULTING CHARGE IS NEGATIVE
neutral 2
WHEN ADDING ELECTRONS
An atom with positive or negative charge
is called andrum roll
ION
Atoms without charge are called ATOMS
Atoms with positive or negative charge
are called IONS
Notice that ONLY the number of e- changes
The number of protons in anAtom NEVER changes
(Only electrons are added or subtracted)
(why?)
ions make up the salt you put on your eggs in the morning
ions are required for your brain to function(ions allow you to see and understand this presentation)
ions are an essential ingredient in soap
ions are required for cellular respiration C 6H 12O 6 + O 2 CO 2 + H 2O
ions make up acids and bases
ions keep your blood functioning
ETCETERA
C 6H 12O 6 + O 2 CO 2 + H 2O
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 are an essential ingredient in soap
ions are required for cellular respiration
ions make up acids and bases
ions keep your blood functioning
the morning