Review of Basic Chemistry
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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| Polar Molecule | a molecule which has one end that is partially positive and the opposite end that is partially negative
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| Hydrogen Bonding | a chemical combination of elements obtained by weak magnetic charges. This bonding is based upon atoms that are already bonded to other atoms
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| Surface Tension | a result of hydrogen bonding causing water to clump together resulting in high tension on the water’s surface
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| Mixture | two or more substances combined that can be separated by physical changes
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| Pure Substance | matter that has a fixed composition, elements and compounds are examples. They can be separated by chemical changes
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| Heterogeneous Mixtures | mixtures that are not uniform. The parts making up this mixture are clearly different from the other parts of the mixture. A mixture of rice and beans is an example- the beans are clearly different from the rice
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| Homogeneous Mixtures | a mixture that is uniform throughout. They are so well mixed that the parts of this mixture are indistinguishable from each other
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| Solvent | a substance that a solute is placed in to form solutions. A powdered drink mix is the solute and the water is the _______
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| Solute | a substance that is dissolved in a mixture. An example would be lemonade powder into water
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| Acids | compounds that when placed in a solution give off hydrogen (H+) ions. A substance that exhibits these characteristics turns blue litmus paper red. These substances have a pH of less than 7. Vinegar is an example
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| Bases | compounds that release hydroxide ions (-OH). These compounds usually turn red litmus paper blue and have a pH over 7
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| pH Scale | a range from 0-14 showing how acidic or basic a substance is. Acidic substances have pH values that are lower than 7. The more acidic something is, the lower the pH value. Neutral substances have a pH around 7. Basic substances have a pH value that is
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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:
ecotteacher
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