Introduction We define the notation 22 as “two squared” or the square of two” or “two raised to the power of 2” and it means 2 x 2. i.e. 22 = 2 x 2 (i.e. 2 multiplied by itself in 2 places ) also 23 = 2 x 2 x 2 ( i.e. 2 multiplied
Classwork Series and Exercises {Mathematics- SS1}: Indices Read More »
Introduction Electrons Electrons were discovered by Sir John Joseph Thomson in 1897 in his cathode ray experiment. He subjected residual gas to a high potential difference at a very low pressure. He observed rays travelling in straight lines from the cathode. He called the rays cathode rays. After many experiments of cathode-rays, J.J. Thomson demonstrated
Introduction Equal volumes of different substances have different masses or weights. For example 1 m3 of lead weighs differently from 1 m3 of wood. Also 1 m3 of water has a weight different from that of sulphuric acid or palm oil of the same volume. This is due to differences of in the quality of
Classwork Series and Exercises {Physics- SS1}: Density and Relative Density Read More »
Standard Form Here we will learn a form of writing numbers. We use the standard form to express very large and very small numbers e.g. 327,800, 000, or 0.000096. The standard form is written as a x 10n where a is a number between 1 and 10 and n is a +ve or –ve integer.
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Introduction A radical is a group of atoms which behave as one unit. They do not exist separately outside a compound. Radicals are divided into two parts namely cations and anions. The cations are the positive radicals and they are known as the metallic radicals. The anions are the negative radicals and they are non-metallic
Classwork Series and Exercises {Chemistry- SS1}: Radicals Read More »