Chapter 2
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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| ATP (adenosine triphosphate) | A chemical fuel that allows the body cells to do work and to function.
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| Element | A substance whose atoms all contain the same number or protons and the same number of electrons.
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| John Dalton | The individual who developed the atomic theory.
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| Atomic Number | The number of protons or the number of electrons within an atom.
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| Dimitri Mendeleev | The Russian chemist who developed the periodic table of the elements.
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| Periodic Table | The arrangement of the elements by increasing atomic number in such a way that similar properties repeat at periodic intervals.
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| Hydrogen | A weak bond that helps hold water molecules together.
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| Water | The Universal Solvent.
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| 21% | The approximate percent of the gas in the atmosphere.
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| Liver | The body organ which converts the toxic ammonia to a harmless substance called urea through the actions of it's enzymes.
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| Energy Storage | The more common of the two functions of carbohydrates.
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| Triglycerides | 95% of the fats in the human body.
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| Catalyst | An enzyme that increases the rate of a chemical reaction without being affected by the reaction.
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| Crenulate | To shrivel up.
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| Base | A substance that combines with H+ ions when dissolved in water.
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| Buffer | A substance that acts as a reservoir for hydrogen ions, donating them to a solution when their concentration falls and taking the hydrogen ions from a solution when their concentration rises.
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| Atoms are electrically _______. | Neutral.
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| Compound | The combination of the atoms of two or more elements.
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| Electron donors | Molecules that furnish electrons during a chemical reaction.
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| Ammonia | A by-product of the breakdown of amino acids.
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| Calcium | The mineral salt needed for muscle contraction and strong bones.
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| Saturated Fat | Fatty acids which contain single covalent bonds.
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| Unsaturated Fat | Fatty acids which contain one or more double covalent bonds.
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| Amino Acids | The building blocks of protein.
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| Brownian movement | The random collision of diffusing molecules.
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| Accelerate | Increased temperature causes the rate of diffusing molecules.
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| Hypotonic | A solution in which the salt concentration inside the cell is high than outside the cell.
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| Hypertonic | A solution in which the salt concentration is greater outside the cell than inside the cell.
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| Isotonic | A solution in which the salt concentration outside a cell is the same as that inside the cell.
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| Distilled pure water has a pH 7 and is classified as ________. | Neutral
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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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