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IB Biology Topic 10: Basics of evolution and natural selection
NoteStudied by 18 peopleChapter 12: The City and the Urban Form
NoteStudied by 27 peopleChapter 6 - Plant Nutrition
NoteStudied by 15 peopleAB Level 1.9: Taxi Drivers and Thai Locals
NoteStudied by 12 peopleThe Columbian Exchange
NoteStudied by 25 people🧬 AP Biology Unit 4
NoteStudied by 926 peopleUnit 1 Quiz 1
- Compounds/Molecules
- Combination of 2 or more atoms
- Formed by bonds
- H_2O
- 2 Elements Hydrogen and Oxygen
- 3 atoms 2 hydrogen and 1 oxygen
- 5NH_3
- 2 Elements nitrogen and Hydrogen
- 20 atoms 5 nitrogen and 15 hydrogens
- Bonds
- Ionic
- Transfer of electrons from one element to another
- Metal to Nonmetal
- Metals will give electrons away.
- Makes them positive charge = cation
- Non-Metals will receive the electrons
- Makes them negatively charged = anion
- Opposites attract
- Covalent
- Sharing of electrons in order to fill their valence orbital
- Nonmetals
- Water
- Structure
- H_2O means there are 2 Hydrogen and 1 Oxygen
- The molecule is bent
- Polarity: There is a slightly negative oxygen adn 2 slightly positive hydrogens.
- Hydrogen bonds: The negative oxygen is attracted to the positive hydrogen.
- Properties of water
- Cohesion: Ability of water molecules to stick together
- Adhesion: Ability of water to stick to toher surfaces.
- Hydrogen bonds are formed with other things
- Solvent: The ability of water to dissolve other polar/charged molecules
- Non-polar oils cannot dissolve in water.
- Density
- Less dense at freezing
- MOst dense at 4 Celsius
- Floats, and can act as a insulator.
- Specific Heat
- High specific heat does makes it difficult to warm and cool down water.
- pH
- Measurements of the amount of Hudrogen ions and Hydroxide ions
- Acid contain more Hidrogen ions
- pH range of 1-6.9
- Bases are alkaline and contain more Hydroxide ions
- pH range of 7.1-14
- Neutral equal number of ions and hydroxide ions
- pH of 7, water
- Organic
- Contains carbon and hydrogen
- Found in living things or in fossils of living things
- Examples: Biomolecules
- Carbohydrates
- Lipids
- Proteins
- Nucleic Acids
- Importance of Biomelecules
- Structure
- They are the building blocks of all cell components
- Energy
- We burn them to make ATP
- Chemical functional Groups
- Hydroxyl
- OH
- Carboxyl
- COOH
- Phosphate
- PO_4
- Amino
- NH_2
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Explore Top NotesNoteStudied by 18 peopleNoteStudied by 27 peopleNoteStudied by 15 peopleNoteStudied by 12 peopleNoteStudied by 25 peopleNoteStudied by 926 people
IB Biology Topic 10: Basics of evolution and natural selection
NoteStudied by 18 peopleChapter 12: The City and the Urban Form
NoteStudied by 27 peopleChapter 6 - Plant Nutrition
NoteStudied by 15 peopleAB Level 1.9: Taxi Drivers and Thai Locals
NoteStudied by 12 peopleThe Columbian Exchange
NoteStudied by 25 people🧬 AP Biology Unit 4
NoteStudied by 926 people