Chemistry

1
Chemistry
2
Elements

• An element is a substance that .

3

• ..Cant be broken down into simpler chemical
  substances

4

• How many naturally occurring elements are
  essential to living organisms?
• Who are the BIG 4 that make up 96 of your body
  mass? Did you get that 96

5

• For the test know the top 11 elements

6

• Just because I am not making you learn the trace
  elements are they any less inportant?

7
ATOMS

• What is in the center of the atom?
• What is on the outside?
• What are energy levels?

8
Isotopes

• The definition of an isotope is..

9

• Same number of protons but. A different number
  of neutrons.
• Example
• Carbon11
• Carbon 12
• Carbon13

10
Compounds and Bonding

• A compound is a substance that is composed of
  atoms of two or more DIFFERENT elements
  chemically combined. Example is H20
• WHY would they do this?
• Just like you they want to be stable

11

• All elements want to have their outermost shell
  filled . They can do this by
• 1.sharing electrons
• 2. giving an electrons away or
• 3. receiving an electron

12
Ionic bond

• A ionic bond is when we give an electron away or
  we receive a electron.

13
Covalent bond

• A covalent bond is when we share an electron

14
Chemical Reaction

• Metabolism
• All the chemical reactions that occur within an
  organism

15
Chemical equations
16
Difference between mixtures and solutions

• A mixture is

17
solution
18
Acids and bases

• pH is

19
Polarity of water