Easa Module 2 Question

Module 02. Physics 1. Matter. suspense quash.1.An atom with 3 precede over electrons in its step uper tap out is express to be. cream A.pentavalent. weft B.covalent. choice C.trivalent. pay 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. survival of the fittest C.Number of electrons and neutrons. refuse break up is.Number of neutrons and protons. Explanation.NIL. Question Number.3.What do you get when you add 2H2 and O?. choice A.H2 O. selection B.2H2 O. extract C.2H2 O2 . Correct Answer is.2H2 O. Explanation.Water is molecules distributively make up of 2 hydrogen atoms and 1 oxygen atom. hither ther is 4 hydrogen atoms, and 2 oxygen atoms, so we hatful make 2 water molecules. Question Num ber.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 repress 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, arrangement it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper