1. Chemistry of Life

2. All matter is made up of atoms.
Matter is anything that has mass
and takes up space.
All matter is made up of atoms.

3. protons
electrons
neutrons

4. Matter can be composed of an element,
a compound, or a mixture.

5. Element – a pure substance made of one type of atom, and it
cannot be broken down.
Aluminum, Al

6. There are 109 elements.

7. 96% of the mass of a human is made of only 4 elements – carbon,
96% of the mass of a human is made of only 4 elements – carbon, hydrogen, oxygen, nitrogen.

8. Most elements do not exist alone. Elements combine to form compounds.
Compound - a pure substance that is composed of atoms of two or more different elements joined by chemical bonds. O H H

9. ELEMENT
COMPOUND

10. MIXTURE

11. O H H Water, H2O The elements that make up a compound
   
The elements that make up a compound
are held together by chemical bonds.
A chemical bond is a force of attraction
between two atoms.
Chemical bond
Chemical bond O
 Water, H2O H H

12. There are two types of chemical bonds:
Covalent bond
Ionic bond

13. O Covalent bond Covalent bond – chemical bond between atoms
   
Covalent bond – chemical bond between atoms
in which electrons are shared.
Covalent bond O H H

14. Cl- Ionic bond (2) Ionic bond – chemical bond between atoms
   
(2) Ionic bond – chemical bond between atoms
in which electrons are transferred
to other atom.
Ionic bond
Cl-
Na+

15. Acid
Base
Strongest
acid
Strongest
Base