Module 5The Chemistry of Life

Name the 5 kingdoms of the 5 Kingdom Classification SystemMonera

(Bacteria)ProtistaFungiPlantaeAnamalia

We are NOT starting a new kingdom, but discovering the Chemistry behind “Life”.

Module 5 Outline Terms

1. Atoms – The Basic Building Blocks of Life

2. Matter – Anything that has mass and takes up- space• Example• Matter ____________________• Not matter _________________

3. Mass – Have mass, then you have weight

Remember????

What characteristic is used first to start classifying life?

1. Size2. Type of energy consumed3. Reproduction style4. Cell type (prokaryotic or eukaryotic)

What Characteristic is used first to classify matter?

1. Size2. Color3. Electrical charge4. Atoms

Page 126

Figure 5.1 is ONLY a MODEL of a Helium Atom

Questions: Why is this only a model? Do we have any “real” pictures of atoms and their structures?

Outline Continued

4. Model – A explanation or representation of something that cannot be seen.

Proton Neutron Electron

Oxygen8 protons8 neutrons8 electrons

+ 0 –

Bohr Model

Niels Bohr designed a model similar

to planetary motion

Hydrogen1 proton1 electron

Everything is made of matter Matter is made of atoms

Outline Continued

CHARGE

LOCATION

Proton

Positive

Nucleus

Neutron

None

Nucleus

Electron

Negative

Circulates around Nucleus

Parts of Atom

C

Different kinds of atoms = elements

H

ON

P SNa

K

Mg

Ca

Outlined ContinuedWhy count…• # Protons = # Electrons• # Neutrons = affects mass, not

charge• # Electrons = # Protons

# of P, N, & E change the properties• Helium = 2 N, 2 P, 2 E = GAS• Carbon = 6 N, 6 P, 6 E = SOLID• Oxygen = 8 N, 8 P, 8 E = GAS

Electrons:• Outer layer• Reactive to

# of ELECTRONS

What element is this?

What is your reasoning?

On Your Own 5.1 Why called the “Planetary Model”? 5.2 What determines an atom’s properties? 5.3 An atom with 13 electrons has how many protons? * You will show your understanding when completed.

1. Draw a planetary model of a helium atom with 2 electrons, 2 protons and 2 neutrons. Label the parts of the atom in their correct location.

2. Why are electrons responsible for the majority the properties atoms demonstrate? HINT: How are neutrons different from electrons? How are protons different from electrons?

3. If an atom has 3 protons…

Are you able to determine the # of neutrons or electrons?

Protons

Study Guide

2. Where are the protons, neutron, and electrons located. 3. What (p,n or e) determine the vast majority of an atom’s

characteristics.

*Replace quiz score with this score.

Today we are going to learn…1. the differences between elements2. what the “2” in H20 mean3. the 6 important biological elements and their abbreviations. 4. to compare and contrast atoms called “helium-3” and “helium-4”

6. Element – Collection of atoms with same # of PROTONS.

Elements

Pg. 128

# of Protons = # of Electrons… Right?

Are protons and neutrons ALWAYS equal?

Don’t Write

Don’t Write

Oxyg

enCompoun

d

H2O(2) Hydrogen

atoms(1) Oxygen

atom

SO4 (1) Sulfur atom

(4) Oxygen atoms

Element

O-17Oxygen-

1717O

Element NamesIn your notes, write the Abbreviation and your guess at the elements name