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28 Cards in this Set
- Front
- Back
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Define chemistry?
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The study of matter and it's changes.
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Define matter?
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Anything that takes up space and has mass.
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What is matter made from?
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Elements.
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Define element?
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A pure substance that cannot be broken down into something else.
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What is the periodic table?
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the arrangement of elements. chemist's most important tool.
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Where are metals on the PT?
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to the left of the staircase
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Where are non-metals on the PT?
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To the right of the staircase
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Where are metalloids found on the PT?
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The green ones along the staircase.
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What is the exception to the nonmetal rule?
Where is it found? |
Hydrogen
Group 1 Metals |
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Why are metalloids called that?
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They have properties of both metals and nonmetals.
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What does it mean to say metals are malleable?
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Easily hammered, shaped, bent, formed.
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What is luster?
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The shininess of a metal.
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Nonmetals are brittle. What does that mean?
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Easily broken.
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What elements are good conducters of electricity?
Which of these are you most familiar with? |
Metals
Copper |
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What is a compound?
When are they formed? |
Two or more elements chemically combined in a specific ratio.
During a chemical reaction. |
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The formulas for the following compounds?:
water? carbon dioxide? glucose? salt? hydrogen peroxide? |
H 2 0
CO 2 C6 H12 06 NaCl H2 O2 |
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What makes compounds different even if they have the same elements?
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The ratios
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The resulting substance when elements combine to form compounds?
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new substance, with new different properties
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The Law of Conservation of Mass?
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Mass cannot be created or destroyed only change shape or form.
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How is matter identified?
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By it's properties
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How are physical properties determined?
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Properties that do not change substance
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What kinds of things are involved in chemical changes?
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New Substance
New properties chemical combo's |
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What happens to the original substance in a chemical change?
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Changes into something new.
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What is extensive property?
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Depends on how much matter is in it
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What is an intensive property?
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Depends soley on substance
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What is involved in every change in matter?
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Energy
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Define an endothermic reaction?
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Takes in heat
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Define an exothermic reaction?
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gives off heat
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