red and green are opposites
assume red and green cancel each other net color = neutral
take away one red
net color = 1 green
take away two red
net color = 2 green
net color = neutral
net color = 2 red
in this arrangement …
green is trapped inside. Only red balls can be added or taken away…
color = 2 green
color = 1 red
color = ?
3 red
color = ?
3 green
In order to understand what ions are, we need to know that…
the particles that make up atoms have either positive 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 in the center and electrons ( ) are on the outside +
+++++ only electrons ( ) can be added or taken away
+++++ this is an atom with 5 electrons and 5 protons
+++++ the atom is neutral net charge = zero
(-) and 5 (+) = zero charge (neutral)
+++++
+++++
+++++ charge = ?
+++++ charge = 1- (one minus)
+++++
+++++
++++ charge = ?
( two plus )
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 an drum 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 an Atom 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
ions make up acids and bases
ions keep your blood functioning
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