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Is Matter Around Us Pure
Give an illustration to show that force can change the speed of an object.
Examples for force can change the speed of an object:
1. Let us consider the case of a horse which exerts force on a cart, pulls it from rest. Subsequently, exerting larger force, the horse makes the cart move with larger speed.
2. A player can stop a moving ball by exerting force on the ball in the opposite direction of its motion.
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Which separation techniques will you apply for the separation of the following?
Sodium chloride from its solution in water.
Which separation techniques will you apply for the separation of the following?
Ammonium chloride from a mixture containing sodium chloride and ammonium chloride.
Which separation techniques will you apply for the separation of the following?
Small pieces of metal in the engine oil of a car.
Which separation techniques will you apply for the separation of the following?
Different pigments from an extract of flower petals.
Which separation techniques will you apply for the separation of the following?
Butter from curd.
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