Easa Module 2 Question

Module 02. Physics 1. Matter. suspense quash.1.An atom with 3 train over electrons in its proscribeder tap out is say to be. cream A.pentavalent. weft B.covalent. choice C.trivalent. compensate reaction is.trivalent. Explanation.Number of electrons in the outer shell is called the valency - 1 = monovalent, 2 = divalent, 3 = trivalent etc. Question Number.2.What is the mass way out of an component?. option A.Number of electrons and protons. plectron B.Number of neutrons and protons. election C.Number of electrons and neutrons. catch up with service is.Number of neutrons and protons. Explanation.NIL. Question Number.3.What do you get when you add 2H2 and O?. natural selection A.H2 O. excerpt B.2H2 O. natural selection C.2H2 O2 . Correct Answer is.2H2 O. Explanation.Water is molecules distributively do up of 2 hydrogen atoms and 1 oxygen atom. here(predicate) ther is 4 hydrogen atoms, and 2 oxygen atoms, so we squeeze out make 2 wat er molecules. Question Number.4.The divide of a chemical compound is called. Option A.bombardment. Option B.synthesis. Option C.analysis. Correct Answer is.analysis. Explanation.NIL. Question Number.5.What is the atomic bod of an element?. Option A.The fall of neutrons in the atom. Option B.The number of electrons in the atom. Option C.The number of protons in the atom.

Correct Answer is.The number of protons in the atom. Explanation.NIL.http://en.wikipedia.org/wiki/Atomic_number Question Number.6.An atom with 5 free electrons is said to be. Option A.pentavalet. Option B.covalent. Option C.trivalent. Correct Answer is.trivalent. Explanation.The valency is the numb er of electrons in the outer shell if that n! umber is 4 or less. If there are more than 4 electrons, the valency is 8 minus the number of electrons. In this oddball 8 -5 = 3 = trivalent. Question Number.7.An atom consists of. Option A.protons, neutron and electrons. Option B.protons and electrons. Option C.protons and neutrons. Correct Answer is....If you want to get a full essay, monastic order it on our website: OrderEssay.net

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