ECTN, c/o SEFI, 39 rue des Deux Eglises, 1000 Brussels, Belgium
General Chemistry 1
Group Leader : Prof. Kristiina Wähälä, University of Helsinki, FI ( firstname.lastname@example.org )
Public : This test has been designed to evaluate a level of competence in chemistry equivalent to that expected at the end of compulsory education.
Duration : You may answer the questions in any order during 60 minutes.
Structure : The test consists of 30 questions covering the 10 topics given below, with 10 questions at each 3 levels of difficulty (introductory, intermediate, advanced).
- Composition of matter: Classification of matter (pure substance, mixture) - Solutions (saturated solution) - Separation methods (filtration, extraction, evaporation, distillation)
- Atoms and elements: Structure of atom nucleus (number of protons, electrons and neutrons) - Structure of electron cloud - Periodic Table (principles of placing elements, period, group) - Properties of alkali metals, halogens and noble gases - Atomic weight, Molecular weight, Formula weight - Mole and Avogadro's number
- Types of Chemical reaction: Acids and bases (hydronium and hydroxide ions, pH scale, neutralization, indicators, buffer solutions) - Endothermic and exothermic reactions - Chemical equations - Factors which affect reaction rates (T, nature of reactants, surface area, concentration, catalyst)
- Chemical bonding: Energy and stability - Role of valence electrons - Ionic bond (structure and formulas of ionic compounds) - Covalent bond (molecules or giant structure) - Water as a solvent (polarity of water molecule) - Metallic bond - Intermolecular forces
- Solid, liquid and gas state: Simple models of solid and gas state
- Chemistry in our environment: Atmosphere (structure, importance of oxygen, ozone and carbon dioxide, greenhouse effect, pollution) - Water ( water cycle, specific properties, diffusion, osmosis) - Acids and bases (acidic and basic oxides, acid rain) - Basic industry (HCl, H2SO4, HNO3, NaOH, different methods to produce salts, water of hydration, Nitrogen cycle, fertilizers)
- Organic chemistry: Oil and oil industry - Carbon, hydrocarbons, multiple bonds, alcohols, carboxylic acids, esters, carbohydrates, proteins, fats) - Addition polymers - Photosynthesis
- Metals: Production from ore, properties (periodic table, metallic bonding, reactivity with oxygen and acids)
- Electrochemistry: Activity series, corrosion - Electrolysis
- Life span of different products (some examples): Waste, paper, plastics, paints, cosmetics, textiles, detergents, glas, construction materials and water