Reaction Time

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Reaction Time

• Nick White

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What are Chemical Reactions ?

• Chemical reactions are classified into different
  types.
• They are also classified by the type of reactant
  or the number of reactants and products.

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Why do reactions take place?

• In order to create an electrically neutral
  chemical

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Whats a chemical equation?

• A chemical equation is a useful description of a
  chemical reaction that tells you the substances
  present before and after the reaction
• Example(s)
• - ABAB
• - CarbonOxygenCarbon Dioxide
• - Peanut butte jellypeanut butter jelly

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Why Do We use them?

• We use chemical equations to
• balance the chemical reactants or products

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Should they be balanced?

• Yes, in order to show that mass is conserved
  during a reaction.
• A chemical equation is always balanced.

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Reactants to Products

• During a chemical reaction reactants change into
  products.
• Most chemical equations are summarized in a word
  equation.
• - Example
• Carbon Oxygen? Carbon dioxide
• Chemical reactants or products can be written as
  chemical formulas
• - Example
• C O2? CO2

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Synthesis Reactions

• Is a reaction which takes place when two or more
  substances react to form a single substance.
• The results may be classified as elements or
  compounds.
• The product is always classified as a compound.
  
• This synthesis equation is displayed as
• A BAB

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Decomposition Reactions

• Is the opposite of synthesis reactions.
• Is a reaction when a compound breaks down into
  two or more simpler substances.
• During this reaction the reactant in a
  decomposition reaction must remain a compound.
• -Formula AB A B
• Example 2H2O 2H2 O2

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Single Displacement

• Is a reaction where one element takes place of
  another element compound
• Single Replacements reactions Formula
• - A BC B AC
• Example
• -Cu 2AgNO3 2Ag Cu(NO3)2

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Double Displacement

• Is a reaction when two different compounds
  exchange positive ions to make two new compounds.
• This Formula is as follows
• - AB CD AD CB
• Example
• - Pb(NO3)2 2KI PbI2 2KNO3

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Images

• Chemical Reactions
• Chemical Equations
• Synthesis Reactions
• Decomposition Reactions
• Single Displacement
• Double Displacement

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Chemical Reactions
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Chemical Equations
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Decomposition Reaction