BGCSE Science Single Award 0568 study guide
BGCSE Science Single Award 0568 · Work through your exam, one topic at a time.
The BGCSE Science Single Award (0568) is a secondary-school science qualification in The Bahamas, typically taken by students around the end of compulsory schooling. It suits candidates who need a broad, balanced grounding in biology, chemistry and physics rather than three separate science awards, and it also appeals to mature learners or school-leavers who need a recognised science credential for further study or employment. The BGCSE Science Single Award 0568 study guide has 9 sections and about 3,441 words.
01Scientific Investigation
Scientific investigation is about asking a question that can be answered by measurement, then designing a method that isolates one factor. The independent variable is the one you deliberately change; the dependent variable is the one you measure; control variables are everything else you keep the same so the comparison is fair.
318 words, about 2 min02Practical Skills and the Nature of Science
Practical work rewards familiarity with common equipment: measuring cylinders for liquid volume (read the bottom of the meniscus at eye level), thermometers for temperature, balances for mass, stopwatches for time, and rulers or vernier scales for length. Choose apparatus whose smallest scale division suits the precision needed; a 100 cm³ measuring cylinder is poor for 2 cm³.
301 words, about 2 min03Cells, Organisms and Life Processes
All living things share seven life processes: movement, respiration, sensitivity, growth, reproduction, excretion and nutrition. Plant and animal cells share a cell membrane, cytoplasm and nucleus; plant cells additionally have a cellulose cell wall, chloroplasts and a permanent vacuole.
275 words, about 1 min04Human Biology: Nutrition, Transport, Coordination and Health
A balanced diet supplies carbohydrates (energy), proteins (growth and repair), fats (energy and insulation), vitamins, minerals, fibre (prevents constipation) and water. Digestion breaks large insoluble molecules into small soluble ones: starch to glucose by amylase, protein to amino acids by protease, fat to fatty acids and glycerol by lipase.
288 words, about 1 min05Reproduction, Inheritance and Variation
Asexual reproduction produces genetically identical offspring from one parent (for example, runners in plants). Sexual reproduction involves gametes and produces variation.
285 words, about 1 min06Matter: Particles, Atomic Structure and the Periodic Table
Solids, liquids and gases differ in the arrangement and energy of particles. In solids particles vibrate about fixed positions; in liquids they are close but can slide; in gases they are far apart and move randomly.
284 words, about 1 min07Chemical Reactions
Chemical reactions form new substances. Signs include gas, colour change, temperature change and precipitate.
248 words, about 1 min08Acids, Bases and Rates
Acids produce hydrogen ions in solution; they turn litmus red and have pH below 7. Alkalis are soluble bases, turn litmus blue and have pH above 7.
308 words, about 2 min09Forces, Motion and Energy
A force is a push or pull measured in newtons. Balanced forces cause no change in motion; unbalanced forces cause acceleration.
1,134 words, about 6 min