NURSING TASTE BANKS AND ALL REVISION MATERIALS IN ONE!!!!!!!!!

Name the mechansm when KCN reacts with bromomethane to form ethanenitrile Nucleophilic Substitution Name the mechanism when aqueous :OH- reacts with bromomethane to form methanol Nucleophilic substitution 00:05 01:36 Name the mechanism when :NH3 reacts with bromomethane to form methanamine Nucleophilic substitution What is a nucleophile ? An electron lone pair donor What are the conditions for the nucleophilic substitution by a :OH- ? Reflux Ethanolic ...

What is empirical formula? Simplest whole number ratio of atoms of each element in a compound What is molecular formula? Actual number of atoms of each element in a compound. What is general formula? Algebraic formula for a homologous series What is structural formula? Shows the unique arrangement of atoms in a molecule in a simplified form, without showing all the bonds. Each carbon is written separately, with the atoms or groups that are attached to it. Branches in the...

As you go down the group, atomic radius increases As you go down the group, ionisation energy decreases As you go down the group, melting point (WHY) generally decreases as the metallic bonding gets weaker due to the atomic radius increasing 3 factors affecting metallic bonding 1. Charge on ion 2. Atomic radius 3. No. of delocalized electrons in the cloud Be with water No reaction Mg with steam Mg + H2O(g) > MgO + H2 Mg with water Mg + 2H2O &gt...

Give 4 roles of proteins Hormones Enzymes Structural components (e.g muscles) Antibodies What is the primary structure of a protein? The sequence of amino acids in the molecule 00:04 01:36 What is a protein? A sequence of amino acids joined by peptide links (bonds) What is the name of the bond between amino acids? Peptide bond How many naturally occurring amino acids are there? 20 What is the general structure of an amino acid? Central carbon...

-log[H+] Calculating pH from H+ ion concentration [H+][OH-] The ionic product of water Kw 00:05 01:36 [H+][A-]/[HA] Ka for weak acids Maintain Temperature How to improve the accuracy of an experiment when constructing a pH curve Equivalence Point The mid point of a titration curve Colourless to Pink Colour change with Phenolphthalein from acid to alkali Pink to Colourless Colour change with Phenolphthalein from alkali to acid Stro...

What is the relative mass and charge on a proton? Mass 1 charge +1 What is the relative mass and charge on a neutron? Mass 1 Charge 0 What is the relative mass and charge on an electron? Mass 1/2000 Charge -1 What is the mass number? The total number of protons and neutrons in the nucleus of an atom What is the Atomic (proton) number? This is the number of protons in the nucleus of an atom and is used to identify an element What are Ions? Ion have diff...

What are the four conditions that apply to all equilibria? 1. Equilibrium can only be reached in a closed system 2. Equilibrium can be approached from either direction and the final position will be the same 3. Equilibrium is a dynamic process. It is reached when the rates of the two opposing processes are the same. 4. We know equilibrium is reached when the macroscopic properties of the system do not change with time (density, concentration, colour and pressure) What is Le Chatelier...

Isotopes atoms of the same element with the same number of protons but a different number of neutrons Atomic number the number of protons in the nucleus of an atom 00:04 01:36 Mass number the sum of the protons and neutrons in the nucleus of an atom Relative isotopic mass mass of one atom of an isotope relative to 1/12 the mass of carbon-12 Relative atomic mass (Ar) the weighted mean mass of an atom of an element relative to 1/12 the mass of carbon-12 ...

1° Alcohol to alkene Al2O3, 300°C 1° alcohol to aldehyde K2Cr2O7/H+, reflux 00:15 01:36 aldehyde to 1° alcohol NaBH4 aldehyde to carboxylic acid K2Cr2O7, H+, reflux carboxylic acid to ester R'OH/ conc. H2SO4 ester to carboxylic acid H+ (aq)/H2O, hydrolysis alkene to halogenoalkane Hbr, room temp alkene to alkane H2/Ni, 150°C alkane to halogenoalkane Br2, UV light 1° alcohol to halogenoalkane NaBr/ conc. H2S...

Bromine Water The test for an alkene. A positive test turns colourless from orange Silver Nitrate The test for a halogenoalkane. A positive test forms a precipitate AgX 00:04 01:36 AgCl White precipitate formed when reacted with silver nitrate AgBr Creamy precipitate formed when reacted with silver nitrate AgI Yellow precipitate formed when reacted with silver nitrate Acidified Potassium Dichromate The test for an alcohol. A positive test turns ...