Chemistry 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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| show | * Ionic compounds have high melting and boiling points
*Covalent compounds have low melting and boiling points.
*Ionic compounds conduct electricity when melted
*Covalent compounds are poor electrical conductors.
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| show | * Example of an ionic compound: RbF
* Example of a covalent compound: CO2
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| Are ionic compounds usually solids, liquids or gases? | show 🗑
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| What state(s) are most common for covalent compounds? | show 🗑
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| show | High melting/boiling points because many have more atoms in each molecule and most have a stronger force between molecules.
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| show | Low melting/boiling points because they have only a few atoms and the forces between molecules is weak.
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| Classify each of the following as a chemical or physical change: a. Rust forming on a coin? b. Metal reacting with an acid to produce hydrogen gas: c. Making popsicles in the freezer: d. Baking bread e. Chopping wood f. Adding sugar to coffee | show 🗑
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| Name these simple ionic compounds: a. CaCl2 b. K2O c. Sc2S3 d. Li3P | show 🗑
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| Write formulas for these simple ionic compounds: a. Beryllium oxide b. Sodium sulphide c. Magnesium nitride d. Zinc chloride | show 🗑
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| show | a. Iron (II) oxide
b. Nickel (III) sulphide
c. Chromium (II) chloride)
d.Titanium (IV) selenide
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| Write formulas for these ionic compounds (containing multivalent ions): a. Cobalt (III) bromide b. Chromium (II) oxide c. Niobium (V) fluoride d. Molybdenum (II) nitride | show 🗑
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| Name these ionic compounds (containing polyatomic ions): a. NH3Cl b. Ca(OH)2 c. K2CO3 d. Mg3(PO4)2 | show 🗑
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| What is a compound? | show 🗑
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| show | A pure substance that cannot be broken down into simpler substances (because it is composed of only one kind of atom).
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| What is a covalent compound? | show 🗑
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| show | A compound in which oppositely charged ions combine due to mutual attraction. Table salt (NaCl) is an example.
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| show | A repeating pattern of positive and negative ions within an ionic compound.
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| show | An ion composed of more than one type of atom combined by covalent bonds.
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| show | A reaction that produces energy usually in the form of light or heat.
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| show | A reaction that absorbs energy.
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| What is a chemical bond? | show 🗑
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| show | A solid substance that forms in a solution.
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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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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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