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Ahmed Fazary_Click Chemistry
Ahmed Fazary_Click Chemistry

... Click chemistry is a concept introduced by K. Barry Sharpless in 2001 and describes chemistry tailored to generate substances quickly and reliably by joining small units together as nature does. In biochemistry, proteins are made from repeating amino acid units and sugars are made from repeating mon ...
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... The three phases of matter (solids, liquids, and gases) have different properties. (3.1kk) A pure substance (element or compound) has a constant composition and constant properties throughout a given sample, and from sample to sample. (3.1r) Elements cannot be broken down by chemical change. (3.1u) ...
UNITS OF CONCENTRATION
UNITS OF CONCENTRATION

... e.g., mg/L of NO3- (mass of nitrate ions per liter) Or in terms of a particular element in a species that was measured. e.g., mg/L of NO3- - N (mass of nitrogen in the form of nitrate ions per liter) To convert from one to the other of these, use the molar mass ratio of the element to that of the ch ...
Chemistry 6–12
Chemistry 6–12

... Analyze the effects of concentration, temperature, pressure, surface area, and the presence or absence of catalysts on reaction rate. ...
Chpt1
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... under study. For example, temperature and pressure of a sample does not depend on the amount of sample. Such properties are not additive. ...
Cheat Sheet for Chemical Equilibrium
Cheat Sheet for Chemical Equilibrium

... values.

They
therefore
need
different
concentrations
of
one
anion
for
precipitation
to
occur.
 • ∆G
=
∆G°
+
RTlnQ
‐
formula
used
to
relate
Gibbs
Free
Energy
at
standard
and
non‐standard
 ...
Chapter 7: Solutions
Chapter 7: Solutions

... the difference between solute(s) and solvent. Predict the effect of temperature and pressure on the solubility of gases in water and the effect of temperature on the solubility of solids in water. Be able to use the Solubility Rules Table to determine if an ionic compound will significantly dissolve ...
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Year 10 (Form 4) (Option)

... Describe the basic characteristics of the core ( i.e. inner - solid, outer semi-molten, very high temperatures), mantle ( i.e. semi-molten, magma) and crust (outer shell, solid rocks). ...
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What are Physical Properties and Changes? - Mamanakis

... A physical change takes place without any changes in molecular composition. The same element or compound is present before and after the change. The same molecule is present through out the changes. Physical changes are related to physical properties since some measurements require that changes be m ...
1. You should review balancing equations and identifying types of
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handout 4
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REACTION PREDICTION

... Then you have chlorides, they’re soluble fun, All except Silver, Lead, Mercury I. Then you have sulfates, except for these three: Barium, Calcium and Lead, you see. Worry not only few left to go still. We will do fine on this test. Yes, we will! Then you have the--Insolubles Hydroxide, Sulfide and C ...
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SAFETY DATA SHEET BLACK WAX OIL

... Read and follow manufacturer's recommendations. Eliminate all sources of ignition. Keep away from heat, sparks and open flame. Risk of vapour concentration on the floor and in low-lying areas. Static electricity and formation of sparks must be prevented. Do not eat, drink or smoke when using the pro ...
CLASSROOM CONNECTORS
CLASSROOM CONNECTORS

... size and texture of an object. The characteristics, however, are not enough to identify a material. Additional ones such as density, and freezing point are needed. Any slight change in these physical properties brings about physical changes such as when ice melts. The substance changes size, shape o ...
Tall: 1) The decomposition of CaCO3 is an endothermic process:
Tall: 1) The decomposition of CaCO3 is an endothermic process:

... A 1.00 mol sample of CO2 is heated to 1000K with excess graphite in a container of volume 40.0 L. At this temperature, Kc is 2.11x10-2 for the reaction: C(graphite) + CO2(g)  2 CO(g) a) b) ...
The representative Elements: Groups 1A – 4A
The representative Elements: Groups 1A – 4A

... Biological Nitrogen Fixation • Fixation of atmospheric N2 by bacteria living in soils and water; some live in root nodules; • Plants such as legumes and alfafa have root nodules that contain nitrogen-fixing bacteria – they benefit directly from these bacteria; • Other plants benefit when the bacter ...
A Classification of AP Chemistry Reactions
A Classification of AP Chemistry Reactions

... There are four types of redox with oxygen compounds, classified by the oxidizing agent: oxidizing acids (HNO3 and H2SO4), manganese compounds (MnO4- and MnO2), chromium compounds (Cr2O72-), and hydrogen peroxide (H2O2). Oxidizing acids Oxidizing acids are strong acids with anions that can be reduced ...
Types of Chemical Reactions
Types of Chemical Reactions

... • Antoine Lavoisier (1743-1794)--Law of Conservation of Matter: Matter can neither be created nor destroyed  this means you having to “balance equations” is his entire fault!! Not all reactions will fall neatly into just one category, but we have to start somewhere! Let’s start with the “terminolog ...
2011 HSC Examination - Chemistry
2011 HSC Examination - Chemistry

... Which of the following statements about the colour of the solution is true? (A) Diluting the solution with water will make it turn blue. (B) If the reaction is exothermic, heating the solution will make it turn blue. (C) If the reaction is endothermic, cooling the solution will make it turn pink. ...
MATERIAL SAFETY DATA SHEET - Dynamic Aqua
MATERIAL SAFETY DATA SHEET - Dynamic Aqua

... Do not attempt to give anything by mouth to an unconscious person. If victim is alert and not convulsing, rinse mouth out and give 1/2 to 1 glass of water to dilute material. IMMEDIATELY contact local Poison Control Centre. Vomiting should only be induced under the direction of a physician or a pois ...
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... To 100 mL of DMAc/LiCl cellulose solution (2 g, 12.4 mmol), 1.12 g (55.8 mmol, 4.5 equiv) of ground sodium hydroxide was added. A first microwave activation was realised (2 x 1’, 300 W, 75 °C) before adding 6.68 mL (62.0 mmol, 5 equiv) of propargyl bromide. After a second microwave activation (10 x ...
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Unit 8- The Mole

... molecules that make up the compound. Such compounds are known as hydrates, meaning that they contain water. The solid that remains when the water is removed is referred to as the anhydrous salt, or anhydrate. Hydrate + heat  Anhydrate + water Usually, the amount of water present in a hydrate is in ...
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... 9. reacts with water 10. Hardness 11. boiling point 12. Luster 13. Odour 14. reacts with air ...
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Freshwater environmental quality parameters

Freshwater environmental quality parameters are the natural and man-made chemical, biological and microbiological characteristics of rivers, lakes and ground-waters, the ways they are measured and the ways that they change. The values or concentrations attributed to such parameters can be used to describe the pollution status of an environment, its biotic status or to predict the likelihood or otherwise of a particular organisms being present. Monitoring of environmental quality parameters is a key activity in managing the environment, restoring polluted environments and anticipating the effects of man-made changes on the environment.
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