CHAPTER 1 OUTLINES

2-1

Elements, Atoms and Molecules

Living Organisms …

Matter-

Element-

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Life requires …

96% …

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4% …

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Trace elements-

2-2

Elements, Atoms and Molecules

Trace elements are..

Iron

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Iodine

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American Dental ..

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Chemicals added to food

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2-3

Elements, Atoms and Molecules

Elements can combine…

Compound-

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Compounds in living ..

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2-4

Elements, Atoms and Molecules

Atoms consist of …

Atom-

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Subatomic Particles

Proton-

Electron-

Neutron-

Nucleus-

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Differences in Elements

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Atomic number-

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Mass number-

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Atomic mass-

Isotopes

Isotopes-

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Radioactive isotope-

2-5

Elements, Atoms and Molecules

Radioactive isotopes…

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Basic Reasearch

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Medical Diagnosis

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Dangers

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2-6

Elements, Atoms and Molecules

Electron arrangement …

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Electron shells-

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Chemical bonds-

2-7

Elements, Atoms and Molecules

Ionic Bonds Are …

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Ion-

Ionic bond-

Salt-

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2-8

Elements, Atoms and Molecules

Covalent bonds join …

Covalent bond-

Molecule-

3 ways to represent

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Double bond-

Valence-

2-9

Elements, Atoms and Molecules

Unequal electron …

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Electronegativity-

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Nonpolar-

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Water

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Polar covalent bond-

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Polar molecule-

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2-10

Elements, Atoms and Molecules

Hydrogen bonds are…

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Hydrogen bond-

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2-11

Water’s Life Supporting …

Hydrogen bonds make…

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Cohesion-

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Surface tension-

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2-12

Water’s Life Supporting …

Water’s hydrogen bonds …

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Heat-

Temperature-

When water heats..

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When water cools…

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Large body of water

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2-13

Water’s Life Supporting …

Ice is less dense …

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Freezing water

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2-14

Water’s Life Supporting …

Water is the solvent …

Solution-

Solvent-

Solute-

Aqueous solution-

Water as a solvent

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2-15

Water’s Life Supporting …

The chemistry of life …

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Acid-

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Base-

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ph scale-

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Buffers-

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2-16

Water’s Life Supporting …

Acid precipitation …

Acid precipitation-

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Effect of acid in lakes…

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Effect of acid in forests

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Solutions?

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2-17

Chemical Reactions

Chemical reactions change …

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Chemical reaction-

Reactants-

Products-

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Beta-carotene into vitamin

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