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Exploring Organic Compounds: Elements, Molecules, and Their Roles in Life

This review delves into organic compounds, focusing on the elements, molecules, and compounds found in the human body and Earth's crust. It compares the common elements in living organisms, such as SPONCH, with those predominant in the Earth's crust. The text outlines the rules for writing chemical symbols and defines key concepts such as elements, compounds, and their significance in biological processes like photosynthesis and cellular respiration. Understanding these foundations is crucial for appreciating life's molecular complexity.

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Exploring Organic Compounds: Elements, Molecules, and Their Roles in Life

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  1. Organic Compounds A review of elements, molecules, and compounds

  2. Human Body Earth’s Crust

  3. Why do you think the elements most common in the human body are not the same as the elements most common in the Earth’s crust? Living and non-living things have different make-ups and need.

  4. What are the rules for writing chemical symbols? • The first letter in a symbol always begins with a capital letter. • If the symbol is composed of two or three letters, the second and third letters are written in lower case. • Letters are always printed, not written in cursive.

  5. Be sure you know the 6 elements that are found in all living things. SPONCH S Sulfur P Phosphorus O Oxygen N Nitrogen C Carbon H Hydrogen

  6. What is an element? • An element is a pure substance • that cannot be broken down • into simpler substances. It • contains only one type of atom. • The use of symbols on the • periodic table is to represent • the elements that make up all matter.

  7. Copper = Cu Iron = Fe

  8. NaCl Salt = Sodium Chloride Why isn’t NaCl on the periodic table? Compound – Any substance made by chemically combining 2 or more elements.

  9. Photosynthesis Which of the substances involved in photosynthesis are elements? Which of the substances are compounds? Which of the substances are molecules?

  10. Cellular Respiration Which of the substances involved in Cellular respiration are elements? Which of the substances are compounds? Which of the substances are molecules?

  11. How are the processes similar?

  12. What are Organic Compounds? An organic compound is made up of carbon atoms bonded to atoms of other elements. Examples are carbohydrates, proteins, lipids, and nucleic acids.

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