Chemical Equations
Chemistry ⇒ Chemical Reactions and Equations
Chemical Equations starts at 7 and continues till grade 12.
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See sample questions for grade 7
Balance the following equation: \_\_\_Al + \_\_\_O_2 \rightarrow \_\_\_Al_2O_3
Balance the following equation: \_\_\_C_2H_6 + \_\_\_O_2 \rightarrow \_\_\_CO_2 + \_\_\_H_2O
Balance the following equation: \_\_\_Fe + \_\_\_O_2 \rightarrow \_\_\_Fe_2O_3
Balance the following equation: \_\_\_H_2 + \_\_\_N_2 \rightarrow \_\_\_NH_3
Balance the following equation: \_\_\_Na + Cl_2 \rightarrow \_\_\_NaCl
Explain the difference between a word equation and a chemical equation.
Explain why chemical equations need to be balanced.
In a chemical equation, what does a coefficient in front of a formula indicate?
In the context of chemical equations, what does the term 'subscript' refer to?
In the equation: 2KClO_3 \rightarrow 2KCl + 3O_2, how many oxygen molecules are produced?
In the equation: CaCO_3 \rightarrow CaO + CO_2, what type of reaction is this?
In the reaction: C + O_2 \rightarrow CO_2, what is the reactant?
State the law of conservation of mass.
What does the arrow (→) in a chemical equation mean?
What does the symbol (aq) mean in a chemical equation?
What information does a chemical equation provide about a reaction?
What is a chemical equation?
What is meant by a 'reactant' in a chemical equation?
What is the product when magnesium reacts with oxygen?
Write the word equation for the reaction: 2Na + Cl_2 \rightarrow 2NaCl
