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WorksheetsReactions (Chemistry Project)
Total questions: 11
Worksheet time: 5mins
What does the Law of Conservation of Mass state?
It states that matter is created
It states that matter cannot be created or destroyed during a chemical change
It states that there is a decrease in mass
It states that matter cannot be created or destroyed during a physical change
What type of reaction needs heat and oxygen?
Decomposition
Synthesis
Double Replacement
Combustion
What are the reactants in this Equation?
2 Na3PO4 + 3 MgCl2 ---> 6 NaCl + Mg3(PO4)2
Trisodium Phosphate and Magnesium Chloride
Sodium Chloride and Magnesium Phosphate
Sodium Phosphate and Magnesium Chloride
Magnesium Chloride and Sodium Chloride
What are the products of this equation?
2 Na +2 H20 ----> 2 NaOH + H2
Sodium and Water
Sodium Hydroxide and Hydrogen
Hydroxide
Water and Sodium Hydroxide
What is decomposition?
A reaction in which a compound breaks down into two or more simpler substances
A reaction in which two or more substances react to form a single substance.
A reaction in which one element takes the place of another element in a compound.
Two different compounds exchange positive ions and form two new compounds.
Which reaction does this equation A+B ---> AB represent?
Single Replacement
Double Replacement
Synthesis
Decomposition
What type of reaction is this equation ?
Zn + H2S ----> H2 + ZnS
Combustion
Synthesis
Double Replacement
Single Replacement
What happens during a double replacement reaction?
Two new products or compounds are formed
One new product is formed
Four new elements are created
The products are created and then destroyed
Changing subscripts change ?
amount
mass
substance
product
Changing coefficients change ?
amounts
substance
mass
reactions
How do you balance this equation?
Al + H2SO4 ---> Al2(SO4)3 + H2
2 Al +3 H2SO4 ---> 2 Al2(SO4)3 + 3 H2
1 Al + 2 H2SO4 ---> 1 Al2(SO4)3 + 3 H2
2 Al + 3 H2SO4 ---> Al2(SO4)3 + 3 H2
4 Al + 2 H2SO4 ---> 3 Al2(SO4)3 + H2
