Chapter 20 Eighth Grade Science Quiz review
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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| Symbols and subscripts indicating the number of atoms of an element in a compound | chemical formula
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| The force that holds atoms together in a compound | chemical bond
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| A charged particle that has more or fewer electrons than protons | ion
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| The force of attraction between oppositely charged ions | ionic bond
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| The force of attraction between atoms sharing electrons | covalent bond
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| Neutral particle formed as a result of sharing electrons | molecule
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| A molecule with one end slightly negative and one slightly positive, but an overall neutral charge | polar molecule
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| A molecule in which electrons are equally shared | nonpolar molecule
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| A bond in which all outer shell electrons are shared by all electrons in the compound | metallic bond
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| What type of bond is formed by shared electrons? | covalent (covalent compounds cooperate)
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| What type of bond is formed by the transfer of electrons? | ionic (Ions Transfer --> I.T.)
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| What type of bond makes individual molecules? | covalent
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| What type of bond makes crystals of repeating 3D patterns? | ionic
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| What type of bond forms between a metal and a nonmetal? | ionic
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| What type of bond forms between only nonmetals? | covalent
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| What type of bond can form double or triple bonds? | covalent
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| What type of bond hold table salt (NaCl) together? | ionic
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| How many atoms of each element? Hg(NO3)2 | Hg : 1 N: 2 O:6 (Remember to multiply the elements in the parentheses by the subscript 2)
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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.
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.
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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