Conservation of mass
Quiz by Romano, Ellen
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10 questions
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- Q1According to the law of conservation of mass, what happens to the mass in a chemical reaction?It becomes energyIt increasesIt is neither created nor destroyedIt is lost30s
- Q2In a closed system, if 10 grams of reactants are used in a chemical reaction, what should the mass of the products be?5 grams10 grams20 grams15 grams30s
- Q3Which of the following best illustrates the principle of conservation of mass?A balloon deflates and loses all its air.Water evaporates and disappears into the air.A candle burns down and leaves nothing behind.Burning wood produces ash, gases, and heat, but the total mass remains the same.30s
- Q4During a chemical reaction, if 8 grams of hydrogen reacts with 32 grams of oxygen, what will be the mass of the water produced?24 grams16 grams40 grams48 grams30s
- Q5What happens to the total mass of a sealed container when ice inside it melts?The total mass becomes zeroThe total mass remains unchangedThe total mass increasesThe total mass decreases30s
- Q6Which statement correctly describes an implication of the conservation of mass?Mass only exists in solid form.Mass can be destroyed during a reaction.The mass of a closed system remains constant over time.Mass can be created during a reaction.30s
- Q7In a reaction where iron combines with oxygen to form rust, what happens to the total mass of the reactants and products?The total mass decreasesThe total mass remains the sameThe total mass turns into energyThe total mass increases30s
- Q8When combining vinegar and baking soda in a closed container, what happens to the mass of the system after the reaction is complete?The mass becomes unmeasurableThe mass decreasesThe mass increasesThe mass remains the same30s
- Q9What is the primary principle behind the law of conservation of mass?Mass can change into energyAtoms can disappear during a reactionElements can be created from nothingMatter cannot be created or destroyed in a chemical reaction30s
- Q10If a chemical reaction occurs and the products weigh 50 grams, how much must the total mass of the reactants have been?60 grams40 grams70 grams50 grams30s