10 Questions
What type of reaction is represented by the chemical equation: Zinc + Silver nitrate → Zinc nitrate + Silver?
Displacement reaction
Why are decomposition reactions considered the opposite of combination reactions?
They involve the breakdown of molecules into simpler substances.
Which type of reaction is characterized by the absorption of heat from the surroundings?
Endothermic reaction
In the equation: Magnesium + Hydrochloric acid → Magnesium chloride + Hydrogen, what role does hydrochloric acid play?
Reactant
Which type of reaction is represented by the equation: Potassium bromide(aq) + Barium iodide(aq) → Potassium iodide(aq) + Barium bromide(s)?
Precipitation reaction
Why is respiration considered an exothermic reaction?
It releases energy in the form of heat and light.
What happens in a double displacement reaction?
Positive ions exchange places between two compounds.
Which of the following is not a characteristic of a displacement reaction?
'Water is always formed as a product.
What is the distinguishing feature of a decomposition reaction where energy is supplied in the form of electricity?
Substances break down due to electrical energy input.
Which statement best describes a precipitation reaction?
A solid forms when two aqueous solutions are mixed.
Test your knowledge of balancing chemical equations and identifying reaction types with these examples. Practice writing balanced equations and determining if reactions are synthesis, decomposition, single displacement, double displacement, or combustion.
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