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Chemistry of Life I-II

Published on Dec 11, 2015

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1.

Chemistry

of Life
Photo by Leo Reynolds
2.

Matter

  • All living things
  • anything: space & mass
  • solid, liquid, gas
  • elements
Photo by Jim Nix / Nomadic Pursuits
3.

Elements

109 individual elements: 26 in the human body
Photo by Ben+Sam
4.

Atoms

  • atoms make up elements
  • smallest unit of matter
  • Nucleus: protons & neutrons
  • Electron Cloud: Electrons
  • atoms have no charge
Photo by kevin dooley
5.

Isotopes

Radium & Barium used in nuclear medicine
Photo by timtak
6.

Ions

  • atoms electrical charge
  • in solutions are called electrolytes
  • in the body: sodium, potassium, chloride, calcium
Photo by betsyweber
7.

96%

  • Carbon: 18%
  • Hydrogen: 10%
  • Oxygen: 65%
  • Nitrogen: 3%
Photo by lavishlylush
8.

Molecule

combination of two or more atoms held together by covalent bonds
Photo by Leo Reynolds
9.

Compound

 made of atoms of 2 or more different elements that are chemically combined
Photo by Luis Rasilvi
10.

Ionic, Covalent, and Hydrogen Bonds

  • When atoms combine with other atoms
  • share electrons with other atoms
  • they gain or loose electrons
  • for stability all atoms will look to bond any free electrons
Photo by vitroid
11.

pH

degree of acidity or alkalinity
Photo by chronographia
12.

pH Scale

  • 0.0: Acid
  • 7.0: Neutral
  • 14.0: Basic
Photo by Sergiu Bacioiu
13.

pH of blood

7.35 - 7.45
Photo by Luis Rasilvi
14.

Water

universal solvent
Photo by kevin dooley
15.

Untitled Slide

  • Solvent: liquid or gas
  • Solute: atom or molecules
  • Solution: combination 
Photo by Adam Franco
16.

Water!!!

What are some of its uses in the body?
Photo by PNASH
17.

Untitled Slide

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