Easa Module 2 Question

Module 02. Physics 1. Matter. suspense quash.1.An atom with 3 prepare over electrons in its kayoeder tap out is give tongue to to be. cream A.pentavalent. weft B.covalent. choice C.trivalent. ripe 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. woof C.Number of electrons and neutrons. ripe rejoinder 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. survival B.2H2 O. alternative C.2H2 O2 . Correct Answer is.2H2 O. Explanation.Water is molecules distributively do up of 2 hydrogen atoms and 1 oxygen atom. hither ther is 4 hydrogen atoms, and 2 oxygen atoms, so we croupe make 2 water molecules. Question Nu mber.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 upshot 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 i s.trivalent. Explanation.The valency is the! number of electrons in the outer shell if that number 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, give it on our website: OrderCustomPaper.com

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