NSSCO Chemistry (6117) study guide
NSSCO Chemistry (6117) · Work through your exam, one topic at a time.
NSSCO Chemistry (subject code 6117) is the ordinary-level chemistry qualification taken in Namibia's senior secondary school system. It is aimed at learners in Grades 11 and 12 who need a formal science credit before moving on to AS-level study, vocational training or tertiary courses such as nursing, agriculture, pharmacy support, mining and metallurgy, environmental health and teaching. The NSSCO Chemistry (6117) study guide has 12 sections and about 4,167 words.
01Matter
Matter in NSSCO Chemistry tests the kinetic particle model, states and changes of state, purity and diffusion. Solids have particles closely packed in a regular arrangement, vibrating about fixed positions; liquids have particles close but irregular and able to slide; gases have widely spaced particles moving randomly at high speed.
349 words, about 2 min02Separation techniques and practical chemistry
Separation techniques and practical chemistry tests how physical differences are used to separate mixtures and how pure substances are identified. Separation depends on a physical difference: particle size, solubility, boiling point, density, magnetism or adsorption.
363 words, about 2 min03Atomic structure
Atomic structure tests subatomic particles, atomic and mass numbers, isotopes, relative atomic mass and electron arrangement. Atoms contain protons, neutrons and electrons.
356 words, about 2 min04Chemical bonding and structure
Chemical bonding and structure tests ionic, covalent and metallic bonding and how structure explains physical properties. Ionic bonding occurs between metals and non-metals.
328 words, about 2 min05Stoichiometry and the mole concept
Stoichiometry and the mole concept tests mole calculations, equations, limiting reagents, yields and solution and gas volumes. One mole contains 6.02 × 10^23 particles (Avogadro constant).
345 words, about 2 min06Acids, bases and salts
Acids, bases and salts tests pH, neutralisation, salt preparation and qualitative tests for ions and gases. An acid is a proton (H+) donor; a base is a proton acceptor.
367 words, about 2 min07The Periodic Table
The Periodic Table tests the arrangement of elements, group trends and the properties of Groups 1, 2, 7 and 0 and transition metals. The Periodic Table arranges elements by increasing atomic number.
347 words, about 2 min08Metals and extraction
Metals and extraction tests the reactivity series, industrial extraction, alloys and corrosion. The reactivity series places metals in order: potassium, sodium, calcium, magnesium, aluminium, carbon, zinc, iron, hydrogen, copper, silver and gold.
330 words, about 2 min09Non-metals, environmental and industrial chemistry
Non-metals, environmental and industrial chemistry tests key non-metals, the Haber and Contact processes and pollution. Oxygen supports combustion and is tested by relighting a glowing splint.
380 words, about 2 min10Chemical reactions: rates, energetics and equilibrium
Chemical reactions: rates, energetics and equilibrium tests collision theory, enthalpy changes and reversible reactions. Reaction rate increases with higher concentration, higher temperature, greater surface area and a catalyst.
330 words, about 2 min11Organic chemistry
Organic chemistry tests hydrocarbons, functional groups, reactions and polymers. Alkanes have the general formula CnH2n+2 and contain only single bonds; they are saturated.
296 words, about 1 min12Experimental and investigative skills
Experimental and investigative skills tests planning, variables, measurement, data processing and evaluation. The independent variable is the one changed; the dependent variable is measured; control variables are kept constant to make the test fair.
376 words, about 2 min