3RD QUARTER SCIENCE 💅

• Biodiversity - variety of life found on Earth
• Biodiversity - plants, animals, bacteria, and humans
• Species Diversity - variety as well as the relative abundance of specie w/n a region
• Genetic Diversity - refers to the variation of genes w/n a species
• Ecosystem Diversity - variation among group of organisms in different settings
• Index of Diversity - mathematical measure of the community's diversity of species
• Early Ideas about atoms: 2500 years ago
• Democritus and Leucippus (5th and 4th Century B.C.E)
• Aristotle - Different things where made of diff amount of the elements: Earth, water, fire, air, and ether.
• All matter consists of tint, invisible particle called " atomos "
• Atomos - uncuttable or indivisible
• Chemical Bonding - atoms are held together to form molecules or compounds
• Duplet rule - 2 electrons in last shell
• Octet rule - 8 electrons in last shell
• Ionic Bonding - between metals and non-metals
• Covalent Bonding - between non-mentals
• Metallic Bonding - between metals
• Ionic Bonding - complete transfer of electron from one atom to another atom
• Lewis Structure - representation of a molecule that shows the arrangement of valence electrons among atoms
• Covalent Bonding - type chemical bond formed between atoms by the sharing of electros pair
• Covalent bonding - shares one or more pairs of electron to achieve a stable electron configuration
• Electron sea theory - Valence electron in a metak are free to move throughout the entire solid, rather than being confined to individuals atoms
• Hydrocarbons - simplest type of Carbon compound entirely of carbon and hydrogen
• Alkanes: Single Bond Only
• Alkenes: Double Bonds Only
• Alkynes: Truple Bond Only
• Butane- H³C-H²C-H²C-CH³

  
• Carbon Compound - any large class of Chemical compounds in which one or more atoms of carbon are covently linked to atoms of other elements
• Hydrocarbons - smallest type of Carbon compound
• Hydrocarbons - composed entirely of carbon and hydrogen
• Polymers - large molecules made up of repeating subunit
• Carbohydrates - C⁶H¹²0⁶
• Carbohydrates - Glycosidic Bond
• Proteins - Peptide Bond
• Lipids - Ester Bond
• Nucleic Acid - Phosphodiester bond
• Proteins - H²NCH(R)COOH
• Lipids - CH³CH²(17)COOH
• Dalton's Model of the atom - John Dalton (1808)
• John Dalton - matter consists of indivicible atoms.