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Chemistry of Life
Chemical Make-Up Review
| Question | Answer |
|---|---|
| The atomic number of carbon is 6. How many unpaired electrons are in its outer shell? | 4 |
| As the concentration of hydrogen ions (H+) increases, the: | solution becomes more acidic. |
| The type of reaction in which substances are combined to form more complex substances is called a(n) _____ reaction. | synthesis |
| The hydrogen isotope tritium consists of: | one proton and two neutrons. |
| Approximately what percentage of the body weight of an adult female is water? | 50% |
| A solution that contains a greater concentration of hydroxide ions (OH–) than hydrogen ions (H+) is a(n) _____ solution. | alkaline (basic) |
| The formation of sucrose involves the removal of a molecule of water. This is called: | dehydration synthesis. |
| An isotope of an element contains different numbers of ____ from other atoms of the same element. | neutrons |
| The approximate pH of gastric fluid is: | 2 |
| The octet rule refers to the: | stability of the atom when there are eight electrons in the outermost energy level. |
| A magnesium atom has an atomic number of 12, an atomic mass of 25, and a +2 charge. This atom would contain _____ protons, _____ neutrons, and _____ electrons. | 12; 13; 10 |
Created by:
Temon
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