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[DOC File]Origin of the Earth: solids, liquids, and gases
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2. Explain how the ancient Greeks reasoned that wood was made up of different amounts of the four basic elements (as they saw them): earth, air, fire, and water. 3. Discuss what characteristics make an inorganic element valuable to human society. Is it the element's rarity, usefulness, monetary worth, or another measure of value?
order of the four elements

[DOC File]Group 2: The Alkaline Earth Metals Lab
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Contained the basic elements of life: carbon, oxygen, nitrogen, sulfur, and hydrogen. The Modern Atmosphere. 78% nitrogen. 21% oxygen. 1% argon. 0.03% carbon dioxide. What happened to all the CO2? Photosynthesis. The Modern Atmosphere. Created by biological processes. The only planet with free oxygen.
the elements of earth

[DOC File]Section 3
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The elements in Group 2 of the periodic table are called the alkaline earth elements. Like the elements in Group 1 (the alkali metals), the elements in Group 2 are chemically active and are never found in nature in the elemental state. Like all members of a group, or family, the elements in Group 2 share certain common characteristics.
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The Four Elements of Matter: Earth, Water, Air, Fire
Describe Earth processes (rusting, weathering, erosion) that have affected selected physical features in students’ neighborhoods. Identify various earth structures (e.g., mountains, faults, drainage basins) through the use of models. Identify the composition of soil as weathered rock and decomposed organic remains. C. Know basic weather elements.
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[DOC File]Describing Matter: part 2
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The alkaline part of the name comes from the fact that they formed basic pH or alkaline solutions in water. The group is composed of beryllium, magnesium, calcium, strontium, barium and radium. All alkaline earth metals have 2 valence electrons, …
the four basic elements

[DOC File]Unit Plan for The Periodic Table - University of Manitoba
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Elements cannot be broken down into simpler substances. Scientists have discovered about 114 different elements. Example: Aluminum (Al) is used for foil. The first 92 elements occur naturally on Earth. Elements after 92, are . synthetic – man made! Particle of Elements – Atoms: An . atom. is the basic particle from which all elements are made.
the four elements

Basic elements of earth