Lesson 20 Covalent Bonds
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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How many electrons are shared in a covalent bond? Is it 1---2---3----4----5000 | 2
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In (ionic)/or(covalent bonds) a pair of (electrons)/or (protons) is shared by two atoms. | covalent and electrons
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The outer energy levels of the tiny atoms hydrogen and helium (atomic number 2) are filled by how many electrons? 2----8-----16----32 | 2
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No ions are present in which? molecules or crystals | molecules
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True or False ? In a polar covalent bond the electron pair is shared UNEQUALLY between the two atoms | TRUE
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What structures of an atom take part in a covalent bond? Photons---Electrons----Neutrons--------Protons | Electrons
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How is a covalent bond formed?---When two atoms share a pair of protons-or-when two atoms sshare a pair of electrons | two atoms share a pair of electrons
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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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.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
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:
Mr. L
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