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17 Cards in this Set
- Front
- Back
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The particles that move around the nucleus of an atom are called |
electrons |
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The nucleus of an atom is made up of |
protons and neutrons |
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carbon has an atomic number of 6 and a mass number of 12. Draw a atomic(Bohr) model for carbon, showing the correct numbers of protons, neutrons, and electrons. |
a nucleus in the center labeled "6 protons + 6 neutrons"
2 electron rings, first one with two electrons and the outer one with four electrons entire thing labeled carbon atom |
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What type of electron is available to form bonds? |
valence
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Which of the following statements about the three isotypes of carbon is true?
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They have the same chemical properties but differ in atomic mass. |
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A chemical compound consists of |
two or more elements combined in a definite proportion
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The transfer of electrons resulting in ions is called a |
ionic bond
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Van der Waals forces are the result of |
unequal sharing of electrons |
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a molecule in which the charges are unevenly distributed is called a |
polar molecule |
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Draw a water molecule, showing the partial charges and the shared electrons |
draw an oxygen atom and the two hydrogen atoms show the electrons bonding label everything as well as the positive and negative results |
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The attraction of water molecules to other water molecules is called |
cohesion |
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An insect has the ability to walk on water due to the following properties of water: |
surface tension cohesion hydrogen bonding |
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Describe the properties of water that helps water move from the roots to the leaves of a tree.
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water uptake from soil
cohesion and adhesion in the xylem transpiration |
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What does pH measure? |
the concentration of H+ ions in solution |
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A compound that produces hydroxide ions (OH-) in solution is called a |
base |
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Which of the following DOES NOT describe an acidic solution?
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pH values above 7 |
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On a pH scale, a value of 7 means that the solution has |
equal concentration of H+ and OH- ions |
