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English: ch- VALUE by kendel hippolyte

  B 1. Which two phrases in the poem tell us that the poet is recalling childhood memories? Answer: The 1st and the last phrases recall childhood memories. 2. How do we know that the customers at Ma Branch's shop were mostly poor? Answer: Most of the customers get their household chores and pay the money later to the shopkeepers. They are maintaining diaries. On that basis, we can say that most of the customers are poor. 3. Where did Ma Branch position herself? Answer: We consider that Ma Branch was a good shopkeeping store. The behavior of the seller was quite comfortable with the customer. Therefore during later years Ma Branch has improved and consequently shifted to Super Market. 4. Why do you think the poet said no one ever took her for granted? Answer: Both the lady sellers were genuine and workaholics. They used to sell their shops product with the accurate amount and weight without spending more time. They got this habit by day-to-day practicing. That's why customers li...
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Ch5: Language of chemistry

 Q4. Define the following terms. a)  Element  -   An element is a pure substance that cannot be broken down by any physical or chemical means into simpler substances. b) Compound -  A compound is a substance formed when two or more chemical elements are chemically bonded together. In   mixtures , the substances present are not chemically bonded together. c) Chemical symbols -  A chemical symbol is a notation of one or two letters representing a   chemical   element .   A  chemical symbol   is a shorthand method of representing an element. Instead of writing out the name of an element, we represent an element name with one or two letters. d) Chemical formula -  A   compound   is a substance made up of a definite proportion of two or more elements. A   chemical formula   tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in...
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CHEMISTRY - ATOMIC STRUCTURE

Q 7 d) What is Thomson's plum pudding model? Answer:  Thomson knew that atoms had an overall neutral charge. Therefore, he reasoned that there must be a source of positive charge within the atom to counterbalance the negative charge on the electrons. This led Thomson to propose that atoms could be described as negative particles floating within a soup of diffuse positive charge. This model is often called the plum pudding model of the atom, due to the fact that its description is very similar to plum pudding, a popular English dessert (see image below). Q- 8 a) Explain the discovery of electrons. Ans:  What are Electrons? Electrons are subatomic particles that hold an elementary charge of magnitude -1. The charge of an electron is equal in magnitude to the charge held by a proton (but has an opposite sign). Therefore, electrically neutral atoms/molecules must have an equal number of electrons and protons. Although the magnitude of the charges held by protons and electrons are ...
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