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Chemistry

protein digestion and absorption

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Biology
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Metabolism
Biology
Nutrition
Chemistry
Digestive system
Posttranslational modification
Protease
Enzyme
Digestion
Protein
Carbohydrate digestion
Human Interest
Protein Digestion As I have suggested before, life is a system of cooperating enzyme reactions, and once again, enzymes are the prime movers in protein digestion just as they were in carbohydrate digestion. The enzymes for protein digestion are collectively called proteinases (protein-ACES) or proteases (pro-tea-ACES). Proteins are broken apart by the protein-digesting enzymes in a process called hydrolysis.

Catalase Lab Report (How temperature affects enzymatic activity)

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Catalysis
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Catalase
Enzymes
Hemoproteins
World Wide Web
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catalase lab report


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The atmosphere

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Chemistry
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Noble gases
Chemical elements
Matter
Chemistry
Optical materials
Argon
Xenon
Trace gas
Atmosphere
Neon
Gas
Environment
Technology

The atmosphere Made up of a mixture of gases (mainly N2 and O2) Mole fractions of major gases (nitrogen, oxygen, carbon dioxide, argon) are pretty constant with altitude ?interesting stuff? involves tiny amounts of trace gases ? ozone, oxides of nitrogen and sulfur and some others ~ 100% Breathing!!! Argon, Neon, Xenon ? rare gases often used in ?neon? lights Atmospheric gases can be separated by distillation, since they have different boiling points N2 77 K O2 90 K Ar 87 K Ne 24 K CH4 111 K Pressure profile of atmosphere Pressure drops almost exponentially with increasing altitude ... why?? Trop. Strat. Temperature profile in the atmosphere stratosphere pV = nRT ideal gas law is ?pretty good? (why??)

General Knowledge of the Elements

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Chemistry
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Chemistry
Periodic table
Matter
Atomic physics
Alkali metal
Block
Chemical element
Halogen
Valence electron
Nonmetal
Metalloid
Properties of metals, metalloids and nonmetals
Ten Most Abundant Elements in the Earth’s Crust 1. Oxygen 2. Silicon 3. Aluminum 4. Iron 5. Calcium 6. Sodium 7. Potassium 8. Magnesium 9. Titanium 10. Hydrogen General Element Knowledge 1. Good Conductor of Electricty — Copper 2. Diatomic elements — Halogens 3. Reactions based on ns2 valence shell — Alkaline earth metals 4. Most important commercial metal (after iron) — Aluminum 5. Used in wires — Copper 6. Soft, silvery metals — Alkali metals 7. Found as corundum (rubies, sapphires) — Aluminum 8. Allotrope — Aluminum 9. Cathode in Batteries — Lead 10. ? + Copper = Bronze — Tin 11. Fertilizer — Potassium 12. Ceramic found on spark plugs — Aluminum 13. Water treatment/antacids — Calcium 14. Detergents and bleach — Sodium 15. Carrying oxygen in blood — Iron

AP Biology Campbell/Reece 8e Chapter 3 Notes

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Biology
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Chemistry
Nature
Inorganic solvents
Oxides
Equilibrium chemistry
Chemical elements
Supramolecular chemistry
Properties of water
Solution
Hydrogen bond
Hydronium
Hydrogen
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AP Biology
Chapter 3 – Water and the Fitness of the Environment 3.1 – The polarity of water molecules results in hydrogen bonding • Polar molecule – two ends of the molecule have opposite charges • Oxygen: δ- • Hydrogen: δ+ • Positive hydrogen of one molecule is attracted to negative oxygen of another in a hydrogen bond 3.2 – Four emergent properties of water contribute to Earth’s fitness for life • Four properties: cohesive behavior, ability to moderate temperature, expansion upon freezing, versatility as a solvent • Cohesion – the bonding of similar molecules through hydrogen bonds • Adhesion – the clinging of one substance to another • Surface tension – a measure of how difficult it is to stretch or break the surface of a liquid • Kinetic energy – energy of motion

Chemistry review sheet

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Chemistry
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Chemistry
Equilibrium chemistry
Inorganic solvents
Acids
Chemical elements
Solutions
Acid–base reaction
Electrolyte
Chemical reaction
Aqueous solution
Hydrogen
Solubility

Final Review Sheet Radio Active Decays Alpha decay occurs when the nucleus emits an alpha particle. Alpha particles have a positive charge and are equivalent in size to a helium nucleus, and so they are symbolized as . Alpha particles are the largest radioactive particle emitted. This type of radioactivity results in a decrease in the atomic number by 2 and a decrease in the atomic mass by 4. The equation below shows uranium-234 undergoing alpha decay:

chemistry lab

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Chemistry
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Density
Aluminum building wiring
Graduated cylinder
Volume
Gauge
Physics
Chemistry
Matter

Using Density to Verify the Thickness of a Wire Purpose- To determine the density of aluminum and then determine the density of an aluminum wire Materials- Aluminum wire, Aluminum Shots, Water, Graduated Cylinder, Ruler, & Scale Procedures- Fill the graduated beaker with water. Measure the amount of mL and grams of water. Grab a handful of aluminum shots add it to the water. Measure the amount of mL and grams of water with the shots. Do steps 3 & 4 two more times. Then measure the aluminum wire?s weight and length using centimeters and grams. Find the calculated diameter of the wire. Data- Trial Mass of Aluminum Shot added (g) Initial volume of water (mL) Final volume of water + aluminum shot (mL) Volume of Aluminum Shot (mL) 1 10.5 50 54 4 2

AP Chemistry

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Chemistry
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Chemistry
Nature
Mass
Chemical properties
Stoichiometry
Nuclear chemistry
Chemical reactions
Atomic mass
Mole
Limiting reagent
Oxygen
Chemical formula
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chapter 1-3
Chapter1 • Precision vs accuracy • Sig figs • Metrics • Classification of matter o Pure substances o Compounds, elements, mixtures o Examples o Homogeneous vs heterogeneous mixtures o Separation of mixtures • Dimensional analysis (show correct set-up, units, cancellations) • History of atomic theory o Dalton model o JJ Thomson o Plum pudding model o Rutherford’s experiment and model o Millikan’s experiment • Atomic structure o Atomic number o Mass number o Isotope designations o Ions • NOMENCLATURE • Atomic mass o Define  Calculate atomic mass, given isotope abundances  Disc why samples of elements with same mass rations as atomic mass mean equal number of atoms (Avogadro’s Hypothesis) • Mole o Define

Chemistry Review

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Chemistry
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Chemistry
Nature
Chemical bonding
Physical chemistry
Quantum chemistry
Ions
Chemical properties
Molecule
Chemical bond
Covalent bond
Properties of water
Chemical reaction
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Everything covered in high school chemistry

Produced: Mastah E Chemistry Review Sheet 1 ? Chemistry is the study of matter and the changes it undergoes. ? A chemical is any substance that has a definite composition. This means it is always made of the same stuff no matter where the chemical comes form. Chemicals can exist naturally or be made. ? A chemical reaction is the process of which one or more substances are changed to produce one or more different substances. ? The recant is a substance or molecule that participates in a chemical reaction. When written in an equation, the reactants are on the left hand side ? Products are the substances produced from chemical reactions and are on the right hand side of the arrow in equations.

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