What are the signs that a chemical reaction has taken place?
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Transcript of What are the signs that a chemical reaction has taken place?
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What are the signs that a chemical reaction has taken place?
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Atomic Structure
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U-236
• Number of protons• Number of electrons• Number of neutrons• Ion, element or isotope?
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Define the following and give an example
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Substance
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Heterogenous
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Compound
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Homogeneous
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Mixture
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Differentiate between independent and dependent variables
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Percent Composition
C6H12O6
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Empirical and molecular formulas
38.67% C 16.22% H 45.11% N
Molar mass = 124 g/mol
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Calculate the quantity of energy needed to heat 8.0 g of water
from 42.0 degrees Celsius to 45.0 degrees Celsius.
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Chemical formulas
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Calcium chloride
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Sodium acetate
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Copper (II) sulfate
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Magnesium phosphate
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Balance the following and tell me what type of reaction it is
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Copper + sulfur produces copper (I) sulfide
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Silver nitrate + aluminum chloride produces silver chloride
+ aluminum nitrate
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Chromium (III) carbonate breaks down into chromium (III) oxide +
carbon dioxide