Physical Science Grade 12 Experiments Memo 2022 Term 1 – Physical science grade 12 term 1 formal experiment part 1
Physical Science Grade 12 Experiments Memo 2022 Term 1 – Physical science grade 12 term 1 formal experiment part 1; What is physical science? Physical science is the study of the inorganic world. That is, it does not study living things. (Those are studied in biological, or life, science.) The four main branches of physical science are astronomy, physics, chemistry, and the Earth sciences, which include meteorology and geologyPractical Experiments and Activities or Physical science is a branch of natural science that studies non-living systems, in contrast to life science. It in turn has many branches, each referred to as a “physical science”, together called the “physical sciences
What are 5 examples of physical science?
What is the main focus of physical science?
- Chemistry Experiment: The preparation of esters and smell identification
- Marks: 15% of annual SBA
Esters have a very fruity smell. Naturally occurring esters are found in fruits. Esters can be synthesised by the reaction of a carboxylic acid and an alcohol. This reaction is known as esterification. This reaction can be catalysed by concentrated sulphuric acid.
AIM: Produce different esters by using a range of carboxylic acids and alcohols. Identify the esters formed by their smell.
Chemistry Experiment: How do you use the titration of oxalic acid against sodium hydroxide to determine the concentration of the sodium hydroxide?
Physics Experiment: The conservation of linear momentum
The momentum of an object is determined by two variables, namely mass and velocity. Linear momentum (momentum in a straight line) can be defined as the product of mass and velocity.
The verification of the conservation of momentum can be determined experimentally during an explosion and a collision.
To verify the conservation of linear momentum during a simulated explosion.
Marks: 15% of annual SBA
- Part 1: Determine the internal resistance of a battery.
- Part 2: Set up a series-parallel network with a known resistor. Determine the equivalent resistance using an ammeter and a voltmeter and compare it with the theoretical value.
The term ‘lost volts’ refers to the difference between the emf and the terminal voltage. The voltage is not ‘lost’. It is the voltage across the internal resistance of the battery, but ‘lost’ for use in the external circuit.
The internal resistance of the battery can be treated just like another resistor in series in the circuit. The sum of the voltages across the external circuit plus the voltage across the internal resistance is equal to the emf
Marks: 15% of annual SBA
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