How many atoms does aluminum chloride contain?
Exercises for setting up reaction equations
When setting up reaction equations in chemistry (8th grade curriculum), you should follow these steps:
Reaction of an element of III. Main group with a halogen
Aluminum and chlorine react to form aluminum chloride
|1)||Establish word equation.|
|Aluminum + chlorine Aluminum chloride|
|2)||Use symbols and formulas|
|Important: Note that all gaseous elements (except noble gases) occur as diatomic elements !!|
|Al + Cl2 AlCl3|
|3)||Establish reaction equation|
Important: The number of atoms of an element must be the same on the left and right side of the reaction arrow.
It is said: 2 moles of aluminum react with 3 moles of chlorine to form 2 moles of aluminum chloride
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