14 Questions
Which statement best describes the relationship between chemical changes and chemical reactions?
Chemical reactions always lead to chemical changes.
Why is it important to wear suitable eyeglasses during Activity 1.1?
To avoid eye injuries from any splashes or debris.
What type of chemical reaction is taking place when barium chloride and sodium sulphate react to give barium sulphate and sodium chloride?
Double displacement reaction
In the reaction between sodium hydroxide and hydrochloric acid, what are the products formed?
Sodium chloride and water
In a redox reaction, which of the following statements is TRUE?
Both oxidation and reduction are occurring simultaneously
What happens to atoms during a chemical reaction?
Atoms do not change into those of another element
Which type of reaction involves the breaking and making of bonds between atoms to produce new substances?
Combination reaction
What is the product formed when calcium oxide reacts with water?
Calcium hydroxide
In the reaction between Zinc and Silver nitrate, which element is oxidized?
Zinc
Which of the following reactions is an example of an endothermic reaction?
Zinc carbonate → Zinc oxide + Carbon dioxide
What type of reaction is represented by the equation: Magnesium(s) + Hydrochloric acid(aq) → Magnesium chloride(aq) + Hydrogen(g)?
Displacement reaction
Which of the following reactions represents a displacement reaction?
Zinc + Silver nitrate → Zinc nitrate + Silver
Which of the following is a decomposition reaction where energy is supplied in the form of light?
$2HgO(s) ightarrow 2Hg(l) + O_2(g)$
What type of reaction involves the formation of a solid product known as a precipitate?
Precipitation reaction
Test your knowledge on chemical reactions and equations by considering various daily life situations like milk left at room temperature, iron exposed to humid atmosphere, food fermentation, cooking, digestion, and respiration.
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