<h2>Answer 4) Option B) entirely new properties than the elements that composes it
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Explanation :</h3>
A compound takes on entirely new properties from the elements that it is composed from. There are many chemical bonds broken and made for new chemical compound to be formed which changes the properties of the new compound than the elements.
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Answer 5) Option B)Chemical means
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Explanation :</h3>
A compound can be separated by chemical means only unlike mixtures which can be separated by physical means. Compound has to be chemically destroyed into elements.
<h2>Answer 6) Option C) protons.
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Explanation : </h3>
All atoms of the same element must have the same number of protons but can differ in number of neutrons. In the process of covalent compounds they share electron and in ionic form they lose electrons. So, electrons are not always same for the same element.
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Answer 7) Option B)Ionic compound
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Explanation :</h3>
When metal forms bond with a nonmetal it usually forms an ionic compound. Ionic bonds are formed when metal loses an electron and a non metal gains that electron.
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Answer 8) Option D) Ionic compound
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Explanation : </h3>
The compound FeS is an example of an ionic compound as Fe is the metal and S is a non metal.
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Answer 9) Option C) Weight
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Explanation : </h3>
Weight is influenced by the strength of gravity rest other factors remains unaffected by the gravity.
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Answer 10) Option A) 8 </h2><h3>Explanation : </h3>
Calcium atom has 20 electrons in its atom.
Which is further divided into 4 different energy levels 2,8,8,2.
Where 1st has 2 electrons, 2nd has 8 electrons and 3rd has 8 electrons and 4th also has 2 electrons.
