Term
| Which of the following represents the most stable arrangement of electrons? |
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Definition
-Atoms with completely filled valence shells
-elements that are positioned on the far right column of the of the periodic table of elements
-inert gasses such as helium, neon, and argon
-atoms with a total of 2, 10, 18, or 36 electrons
(all of the above) |
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Term
| Freezing and boiling are examples of ____________. |
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Definition
| processes that cause physical changes |
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Term
| Chemical bonds are ___________. |
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Definition
| the redistribution of electrons between atoms, leading to a more stable configuration |
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Term
| Which of the following common household products is an acid? |
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Definition
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Term
| Metallic bonds create materials with properties that make them __________. |
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Definition
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Term
| The electrons at the outer level of the atom are called ____________. |
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Definition
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Term
| Where would you NOT expect to find plasma? |
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Definition
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Term
| Which state of matter maintains a constant volume but not a fixed shape? |
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Definition
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Term
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Definition
-fur and cellulose
-spider webs and plastic
-nylon and cotton
-some paints, inks, and glues
(all of the above) |
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Term
| In which of the following places is more polymerization than depolymerization occurring? |
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Definition
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Term
| To save money, you bought a tougher cut of meat. Which of the following processes will you be using if you use a meat tenderizer |
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Definition
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Term
| Sodium chloride (NaCl) atoms form a crystal lattice that is held together by ______ _______. |
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Definition
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Term
| Which of the following chemical reactions shows combustion? |
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Definition
| CH4 + 2 O2 -> CO2 + 2 H2O |
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Term
| Polymers are characterized as ___________. |
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Definition
| a collection of small molecules combined into large chains. |
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Term
| A piece of gravel by the side of the road is most likely held together by ________. |
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Definition
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Term
| Which of the following is a characteristic of hydrogen bonds? |
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Definition
-separation of electrical charges
-links of hydrogen to oxygen, nitrogen, or fluorine
-biological polymers
-DNA double helix
(all of the above) |
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Term
| Which makes the best electrical conductor? |
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Definition
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Term
| An example of an ionic bond is _____. |
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Definition
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Term
| An example of a metallic bond is ________. |
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Definition
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Term
| An example of a covalent bond is |
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Definition
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Term
| If a chemical bond forms spontaneously, |
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Definition
| energy will be released in the reaction |
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Term
| To see an everyday example of oxidation, you might observe |
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Definition
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Term
| If you drop a material that is held together by ionic bonds, one likely outcome is that it will |
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Definition
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Term
| Which statement is true of liquid crystals? |
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Definition
| Outside an electric field, liquid crystals are a static state of matter with disordered atoms |
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Term
| Your friend cut her hand while replacing a windowpane. Which of the following can affect the way her blood clots? |
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Definition
The nature of the cut
The presence of foreign matter in the wound
Genetic diseases
Temperature
All these factors affect blood clotting
(All the above) |
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Term
| Exothermic and endothermic chemical reactions differ in that |
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Definition
| Energy is given off only in exothermic reactions |
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Term
| A material that shows polarization in its chemical attraction is |
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Definition
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Term
| A material that shows CONSISTENT van der Waals forces in its chemical attraction is |
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Definition
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Term
| A material that shows CONSISTENT hydrogen bonding in its chemical attraction is |
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Definition
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Term
| Which chemical bond would be analogous to a post-it-note type of glue? |
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Definition
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Term
| A high octane rating in gasoline causes less engine knock because |
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Definition
| high octane can withstand high compression in a cylinder without igniting |
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Term
| The chemical bonds that hold most of your body together involve |
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Definition
| sharing of electrons among neighboring atoms |
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