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All chemical equations have 3
 major parts:
Reactants   reaction condition   products


Reactants: All chemicals or
 substances that you begin with

Products: all the chemicals or
 substances that you end up with.
In a chemical reaction the mass you
 begin with is the mass you end up with.
In a chemical reaction we don’t
 change atoms.
This can be observed in a closed
 system.
Closed system: nothing can escape
Open system: things can escape
If you consider a large enough
 container it always is a closed system.
 We know that:
1. Atoms do not change types
2. Mass is conserved
 To have the same number of each atom in the reactants
   and products, you must balance the chemical equation.
 To Balance , add coefficient in front of the chemical
   formula.

 To help remember this, remember this sentence:

I Have No Bright Or Clever Friends.
Iodine, hydrogen, nitrogen, bromine, oxygen, chlorine, and
fluorine
1. Write the word equation
2. Write the symbol; ionic (polyatomic
   ions), covalent, diatomic compounds
3. Balance all atoms other than oxygen
   and hydrogen
4. Balance polyatomic ions if they appear
   in reactants and products
5. Balance oxygen
6. Balance hydrogen
7. Repeat 3-6 until no changes are made
Synthesis: Combining two compounds/ atoms
 together
Decomposition: a molecule “falling” apart
Single Displacement: one molecule replaces
 another in a molecule
Double Displacement: two parts of two
 molecules switching places
Combustion: something burning in oxygen to
 produce carbon dioxide and water

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Chemical equation

  • 1.
  • 2. All chemical equations have 3 major parts: Reactants reaction condition products Reactants: All chemicals or substances that you begin with Products: all the chemicals or substances that you end up with.
  • 3. In a chemical reaction the mass you begin with is the mass you end up with. In a chemical reaction we don’t change atoms. This can be observed in a closed system. Closed system: nothing can escape Open system: things can escape If you consider a large enough container it always is a closed system.
  • 4.  We know that: 1. Atoms do not change types 2. Mass is conserved  To have the same number of each atom in the reactants and products, you must balance the chemical equation.  To Balance , add coefficient in front of the chemical formula.  To help remember this, remember this sentence: I Have No Bright Or Clever Friends. Iodine, hydrogen, nitrogen, bromine, oxygen, chlorine, and fluorine
  • 5. 1. Write the word equation 2. Write the symbol; ionic (polyatomic ions), covalent, diatomic compounds 3. Balance all atoms other than oxygen and hydrogen 4. Balance polyatomic ions if they appear in reactants and products 5. Balance oxygen 6. Balance hydrogen 7. Repeat 3-6 until no changes are made
  • 6. Synthesis: Combining two compounds/ atoms together Decomposition: a molecule “falling” apart Single Displacement: one molecule replaces another in a molecule Double Displacement: two parts of two molecules switching places Combustion: something burning in oxygen to produce carbon dioxide and water