Exercise
Form 1: Fundamentals of Conservation of Mass
In this engaging exercise, students will explore the principle of conservation of mass through hands-on experiments that illustrate how mass remains constant in chemical reactions, allowing them to observe this fundamental concept in action and develop a deeper understanding of matter.
Questions
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MultiChoice
According to the Law of Conservation of Mass, mass is:
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MultiChoice
In a chemical reaction in a closed container, the total mass of the reactants is always:
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MultiChoice
If 12 g of carbon reacts completely with oxygen to produce 44 g of carbon dioxide, what mass of oxygen reacted?
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MultiChoice
Which scientist is credited with establishing the Law of Conservation of Mass?
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MultiChoice
If 40 g of reactant A reacts with 16 g of reactant B, what is the total mass of the products formed?
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MultiChoice
When wood burns in an open fireplace, the ash left behind weighs less than the original wood. Why?
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MultiChoice
Why is mass conserved during a chemical reaction?
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MultiChoice
100 g of ice melts into liquid water in a sealed container. What is the mass of the water?
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MultiChoice
Why is a closed system necessary to experimentally prove the Law of Conservation of Mass for gas-producing reactions?
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MultiChoice
In a reaction, 25 g of reactant X reacts to form 15 g of product Y and some gas Z. What mass of gas Z is produced?
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MultiChoice
The Law of Conservation of Mass applies to:
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MultiChoice
If 2 g of hydrogen gas reacts completely with 16 g of oxygen gas, how many grams of water are produced?