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Both Cl and I in Group 7. Both have 7 electrons in its outer shell and require 1 electron to obtain a full shell. Reactivity of these halogens correspond to its ability to gain an electron. Cl can gain an...
Many people worry about these type of exam questions however, if you follow a set way of approaching them, then they are much less daunting that you might think. Here are my top tips:1) Make you full...
An easy way to remember the stages of mitosis is- preparation may achieve the impossible Prophase-preparationMetaphase-mayAnaphase-achieveTelophase-theInterphase-impossible. Prophaseis the first phase, wh...
The role of the sperm cell is to fertilise the egg.- It has a streamlined shape with a tail which enables it to swim towards the egg.- It has a head with a nucleus, which contains the genetic ma...
The turning point can be found by using the concept of transformations. Firstly, it is important to form a relation between the values of a and b in an equation of the following form y = (x+a)^2 + b and t...
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