Junior Cert Science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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What do atoms form when they combine with atoms of another element | Compounds
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What holds atoms together in a compound | Chemical bond
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How many electrons do the noble gases (group VIII) have on their outer shell | 8, they have a full outer shell
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Are group VIII elements stable or unstable | Stable
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What does the Octet Rule state | Atoms bond together so that each atom ends up with an electron arrangement with 8 electrons in its outermost shell
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When is an ionic bond formed | When electrons are given of taken by atoms
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What is an ion | A positively or negatively charged atom or group of atoms
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If an atom loses electrons does it become positively or negatively charged | Positively
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If an atom gains electrons does it become positively or negatively charged | Negatively
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A sodium atom has an electronic configuration of 2, 8, 1, is it stable | No, it easily loses its outer electron
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A chlorine atom has an electronic configuration of 2, 8, 7, is it stable | No, it will easily gain an electron
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If sodium loses it electron what does it become | Sodium ion with a charge of +1
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If chlorine gains an electron what does it become | Chlorine ion with a charge of -1
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Is a chlorine ion and a sodium ion attracted to one another | Yes because they have opposite charges
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When a chlorine ion and a sodium ion, bond with one another, what is formed | Sodium chloride
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Does a chlorine ion have a full outer shell | Yes, it gains one
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Does a sodium ion have a full outer shell | Yes, it loses one
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A magnesium atom has an electronic configuration of 2, 8, 2, is it stable | No, it needs to lose 2 electrons
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If Mg loses 2 electrons, what does it become | Magnesium ion, with a full outer shell
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An oxygen atom has an electronic configuration of 2, 6, is it stable | No, it needs to gain 2 electrons
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If oxygen gains 2 electrons, what does it become | Oxygen ion with a full outer shell
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When a magnesium ion and an oxygen ion bond together what is formed | Magnesium oxide
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How is an ionic bond formed | Ir is formed by the force of attraction between a positive and a negative ion
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
gcu science
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