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The difference between hard and soft water
Collect some hard water from a stream(or make some as defined in the next experiment). Also secure some soft water like as rain water or distilled water. Make some soap solution by dissolving soap shavings or powdered soap in a little warm water. Place equivalent amounts of hard and soft water in every of two bottles. Add soap solution to the soft water with a dropper, some drops at a time. Shake the bottle well after every addition. Count the number of drops of soap solution required to produce suds about 1 cm thick on the top.
types, principle and working
.How did the geocentric theory change over time as increased scientific knowledge led to increased consensus within the scientific community?.
Adulteration of food: We live in a society where some times foods and even medicines are sold in an adulterated form by mixing it with other materials, which are neither food
Optics: The prevalence of eye diseases in the desert and tropical countries led to the study of the eye by Arab doctors. Surgical treatment of the eye led to renewed interest
purpose of different levels of description of an entry
Collaborative Learning Community: a) Literature Review Presentation i) In this assignment, the instructor will place the students into groups. You will be required to work to
Objectives After observing the demonstration experiments, you should be able to: 1. State the need for understanding the characteristics of a chemical waste before disposin
Define the post central area of the Cerebrum The post central area is behind the central sulcus. Here, the sensations of pain, temperature, pressure and touch, knowledge of mus
The ventricular system While the ventricular system is naturally not involved in cognitive processing since it consists of cavities filled with cerebrospinal fluid, it is good to
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