Chapter 1 form 1 science
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The document introduces science by defining it as the systematic study of nature and how it affects us and our environment. It discusses careers in science such as veterinarians, doctors, chemists and engineers. The document also covers various areas of scientific study including biology, chemistry, physics and geology.
Chapter 1 form 1 science
- 1. SEKOLAH SULTAN ALAM SHAH, PARCEL G, PERSINT 1, 62520 WILAYAH PERSEKUTUAN PUTRAJAYA Chapter 1 INTRODUCING TO SCIENCE START
- 2. Introducing Science What is Science? Science Laboratory Steps in Scientific Investigation Physical Quantities and Their Units The Use of Measuring Tools Weight and Mass
- 3. OUT What is Science? Science is the systematic study of nature and how it effects us and our environment. Important is science. • Understand ourselves. Knowing how our body work. • Understand our environment. This helps us to improve the quality of our environment and conserve it for our future generation. • Makes our life more comfortable. NEXT
- 4. OUT Careers in science. Vetenarinarian Computer programmer Doctor Careers in science Pharmacist Chemist Engineer Architect BACK NEXT
- 5. OUT Areas of study. Biology Biochemistry Physics Areas of study Meteorology Chemistry Geology BACK Astronomy
- 6. Science Laboratory 1. Laboratory is the place where a scientist works. 2. Carrying out experiments is interesting and exciting. However, some chemicals used may be dangerous and poisonous. 3. To prevent injury to oneself and others, one needs to know the general rules and safety precautions in a laboratory. Click here to see the rules and safety precautions in the laboratory. Click here to see the general laboratory apparatus and their uses. Click here to see the hazard warning symbol OUT
- 7. Rules and safety precautions in the laboratory. - Never enter the laboratory unless a teacher is present. - Do not eat, drink or taste any chemicals. - Always follow the teacher’s instruction. - Never touch chemicals with your bare hands. Use a spatula. - Read the label on a reagent bottle before using its content. - Turn of the bunsen Burner after use. - Do not pure back any unused chemical into its bottle. - Do not throw solid wastes into the sinks. - Wash and keep all apparatus after use. - Do not run or play in the laboratory. - Do not taste anything without the teacher’s permission. - Report any breakages to the teacher. - Keep the bench clean and tidy. BACK
- 8. General laboratory apparatus and their uses. BACK
- 9. BACK Hazard warning symbols SYMBOL Explosive EXAMPLES PROPER HANDLING METHOD Explodes easily when mixed with other substances Follow instructions given when handling the substance. Potassium, sodium, concentrated acids and alkalis, mixture of hydrogen and air. Flammable Catches fire and burns easily Petrol, ethanol, kerosene, methylated spirit, white phosphorus, yellow phosphorus. Toxic or poisonous Corrosive Irritant or harmful Radioactive Causes death or harm to the body Mercury, sodium cyanide, hydrogen sulphide, lead, benzene, chlorofrom, bromine Keep away from fire and heat sources Do not taste these substance Keep under lock and key Causes damage to the skin or eyes upon contract Concentrated acids and alkalis, bromine, hydrogen peroxide. Irritates (cause itchiness and rashes) eyes, skin and respiratory system. Ammonia, alcohol, bromine vapour, chlorine, chloroform Emits radiation that can destroy body cells/tissues Uranium, plutonium, radium, thorium Avoid direct contract with the skin or eyes Avoid inhalation Use in a fume chamber according to the instruction given. Keep in lead containers
- 10. OUT Steps in Science Investigation Identify the problem Forming the hypothesis Carrying out the experiment Planning an experiment Analysing and interpreting data Making a conclusion Writing a report on the experiment
- 11. Physical Quantities and Their Units Physical quantity SI unit Symbol Length metre m Mass kilogram kg Time second s Temperature kelvin K ampere A A physical quantity is a quantity that can be measured Numerical value giga G 1 000 000 000 mega M 1 000 000 kilo k 1 000 da 10 deci d 0.1 centi Prefixes are useful in expressing physical quantities that are either very big or very small. Symbol deca Electric current Prefix c 0.01 mili m 0.001 micro µ 0.000 001 nano n 0.000 000 001 pico p 0.000 000 000 001
- 12. Weight and Mass