Chemical Reactions and Equations

Which of the following is a displacement reaction?

What does the Law of Conservation of Mass state in a chemical reaction?

Which of the following is a combination reaction?

What happens when iron (Fe) is placed in copper sulfate (CuSO₄) solution?

In which reaction does a reddish-brown deposit form?

If CO₂ gas is released in a reaction, what type of reaction is it likely to be?

Which of the following is an example of double displacement reaction?

Which metal reacts most vigorously with water?

The blue color of an aqueous solution is due to which ion?

What is required in a balanced chemical equation?

Which of the following is a decomposition reaction?

Heating FeSO₄ releases which gas?

When lime (CaO) is mixed with water, the temperature —

Turning red litmus blue indicates the solution is —

2Mg + O₂ → 2MgO is what type of reaction?

What forms on copper metal left in moist air for some time?

In a chemical equation, what does the “+” sign indicate?

Which substance forms a brownish solid deposit on rusting?

What is the first step in writing a balanced chemical equation?

What is produced by electrolysis of water?

Silver chloride (AgCl) decomposes in which light?

Which of the following is an exothermic reaction?

What is the color of solid formed after heating FeSO₄?

Which of the following indicates a chemical reaction has taken place?

In the reaction 2H₂ + O₂ → 2H₂O, which elements are combining?