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Topic/ Objective: Understand how chemistry affects living things. Name Date Essential Question: Summarize the affect chemistry has on living things. Period
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2. 2.1 The Nature of Matter
Atom proton (+), neutron (no charge), and electron (-)
Isotopes have different # of neutrons- changes mass #, has same chem properties still
2 or more combined elements; molecule is smallest unit of
Ionic bonds- 1+ (-) transfered
Covalent bonds- (-) shared
Subatomic Particles
Isotopes vs elements
What is a chem. compound?
Two types of chem bonds

3. 2.2 Properties of Water Why is water polar? Solutions vs suspensions
Acids and Bases
Uneven distribution
of (-)
-H end is slight +
-O end is slight -
Solution: solute “dissapears” but takes up space; Suspension: non-dissolved material
Acid: pH 0-6; high concentration H+
Base: pH 8-14; high concentration OH-
Neutral: pH 7; H+=OH-

4. 2.3 Carbon Compounds Monomer + polymer undergo polymerization
Carbohydrates: main E source; also structural
Lipids: “fats”; store E; also membranes/ waterproof covering
Nucleic Acids: store/ transmit DNA or RNA
Proteins: contain N, C, H, and O; control rate of rxn/ form bone or muscle/ transport in or out of cell/ fight disease
Macromolecules:
Organic compounds

5. 2.4 Chemical Reactions and Enzymes
Chem rxn affects chem bond
How E changes affect chem rxn
Importance of enzymes
Chem rxn changes the chem bond joining compounds
Release E- spontanous rxn
Absorb E- need E source to start rxn
Speed up chem rxn (catalyst); base inhibits enzyme = less effective/ acid deactivate enzyme = no rxn