OCR A-Level Chemistry Bundled Exams with complete solution | everything you need

Aliphatic hydrocarbon - A hydrocarbon with carbon atoms joined together in straight or branched chains. Alicylic hydrocarbon - A hydrocarbon with carbon atoms joined together in a ring structure. Aromatic hydrocarbon - Contain at least one benzene ring or similar structural features. Aldehyde - ...

Test for carbonates - Add dilute Nitric Acid - see bubbling: May be a carbonate Bubbles - carbon dioxide To prove it is carbon dioxide, bubble through limewater - should turn from clear to cloudy Na₂CO₃(aq) + 2HNO₃(aq) → 2NaNO₃(aq) + CO₂(g) + H₂O(l) Testing for sulphates - Add Bari...

ISOTOPES - ATOMS OF THE SAME ELEMENT WITH DIFFERENT NUMBERS OF NEUTRONS ATOMIC (PROTON) NUMBER - NUMBER OF PROTONS IN THE NUCLEUS MASS (NUCLEON) NUMBER - NUMBER OF PARTICLES (PROTONS & NEUTRONS) IN THE NUCLEUS ION - A POSITIVELY OR NEGATIVELY CHARGED ATOM OR (COVALENTLY BONDED) GROUP OF ATOMS RE...

Alkene + hydrogen /nickel catalyst/423K= - alkane Alkene + bromine /room temperature= - dihaloalkane Alkene + HCl(g/aq) /room temperature= - haloalkane (mixed products) Alkene + H2O(g) /H3PO4= - alcohol (mixed products) Primary alcohol + 2[O] /excess K2Cr2O7/H2SO4/reflux= - carboxylic acid Prim...

Atomic Radius, Nuclear Charge, Electron Shielding - What are the 3 things that affect first ionisation energy? Increase. More protons- stronger attraction. Not much extra shielding. - What is the general trend in ionisation energy across periods? And why? Decrease due to increased attraction bet...

Conditions for oxidation of primary alcohols to aldehydes [O] - Acidified potassium dichromate (VII) Distillation Conditions for oxidation of primary alcohols to carboxylic acids 2[O] - Acidified potassium dichromate (VII) Reflux Conditions for oxidation of secondary alcohols to ketones [O] - A...

Alkane to Haloalkane - Halogen with UV (Radical Substitution) Alkene to Haloalkane - Hydrogen Halide (Electrophilic Addition) Alcohol to Haloalkane - Sodium Halide with H₂SO₄ Alkene to Alkane - Hydrogen with Nickle Catalyst at 150°C & 5atm Alkene to Alchohol - Steam with Conc H₃PO₄ Cata...

Test for carbonates - - add dilute HCL - it makes carbon dioxide test for carbon dioxide by bubbling it through lime water Test for ammonium ions - -add sodium hydroxide -warm the mixture -hover damp red litmus paper over it , if it turns blue the ions are present Test for sulphate ionz (SO4 2...

Relative isotopic mass - The mass of an isotope relative to 1/12 of the mass of a carbon-12 atom. Relative atomic mass Ar - The weighted mean mass of an atom of an element relative to 1/12 of the mass of a carbon-12 atom. Weighted: The percentage abundance of the isotopes of that element Mean: T...