The law of conservation of mass is a fundamental principle in chemistry.
The Law in Action: Imagine a closed system, like a sealed test tube during a chemical reaction. This law states that the total mass of the starting materials (reactants) will always be equal to the total mass of the ending materials (products). In other words, no matter how the atoms rearrange during the reaction, the overall mass stays constant.
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90 Mins English English100 Questions100 Marks90 Mins English English100 Questions100 Marks90 Mins EnglishWhich of the following types of reactions is a neutralisation reaction?
In the reaction CuO + H₂ → Cu + H₂O, which substance is oxidised?
What is the term used for a substance that reduces the rate of a chemical reaction?
Which chemical is known as Philosopher’s Wool?
Which of these metals reacts with water at normal temperature?
In industrial settings, Freon-12 is most commonly manufactured by which chemical reaction?
In the reaction: 2H₂ + O₂ → 2H₂O, if 5 moles of H₂ and 2 moles of O₂ are mixed, the limiting reagent is:
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