The Chemistry of Life (Chapter 2: Background for Biochemistry)
A. Key Forces Acting on Matter
+ and - attract + and + repel
itself. Nuclear Force is greater as evidenced by the force that holds the nucleus which keeps it together. |
C. The AtomThe Quantum Mechanical Model of the atom is the theory that states that the nucleus is composed of protons and neutrons, which also have electrons moving around the nucleus.
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B. MatterDefine in your own words, give examples, include images and source to reference for basic chemistry terms needed to understand biochemistry:
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D. Sub-Atomic ParticlesBe sure to include why each particle is important and what happens when you change each particle. If you need help, use my sentence starters below...
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E. Chemical BondsDefine in your own words, give examples, include images and source to reference for the following bond types (in order of increasing strength):
Examples of Covalently Bonded Molecules:
Ionic Bonds are formed when valence electrons in atomic orbitals are treated. Examples of Ionically Bonded Molecules:
Metallic Bonds are formed between metal atoms when valence electrons form a "metallic electron sea". Examples:
Hydrogen Bonds are when polar molecules such as water can attract each other. Van der Walls Forces are a slight attraction that develops between the oppositely charged regions of nearby molecules. |
F. Water and It's Importance to Life1. Water's Molecular Structure
Water's polarity gives it the ability to dissolve both ionic compounds and other polar molecules. such as sugar.
A Base is a compound that produces hydroxide ions in a solution. An Acid is any compound that forms H+ ions in a solution. pH Scale - Measurement system used to indicate the concentration of hydrogen ions (H+) in a solution. (Ranges, 0 to 14) What causes something to be acidic, basic, what is the pH scale and how is water involved in acidity. |