Law of Conservation of Mass 7th Grade Quiz

Law of Conservation of Mass

Assessment

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Sheila Holt

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Science

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7th Grade

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3K plays

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Medium

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10 questions

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MULTIPLE CHOICE

2 mins • 12 pts

What is the Law of Conservation of mass?

MULTIPLE CHOICE

1 min • 1 pt

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have?

MULTIPLE CHOICE

45 sec • 1 pt

The number in front of a compound or element is a

MULTIPLE CHOICE

45 sec • 1 pt

The number to the lower side of an element is a

MULTIPLE CHOICE

45 sec • 1 pt

Matter can not be created nor destroyed: it can only be

MULTIPLE CHOICE

1 min • 1 pt

Which is Chemical Equation is Balanced?

MULTIPLE CHOICE

5 mins • 1 pt

Is this equation balanced or unbalanced?
2Fe₂O₃ + 3C --> 4Fe + 3 CO₂

MULTIPLE CHOICE

5 mins • 1 pt

If a reaction starts with a total 75g of reactants it should produce

MULTIPLE CHOICE

5 mins • 1 pt

In the reaction AB-----> A + B reactant AB has 12g and product B has 5g. How many grams should product A have?

10.

MULTIPLE CHOICE

2 mins • 1 pt

Bob puts 200 grams of ice into a pitcher with 900 grams of water. He gets distracted and comes back later to find that the ice has melted in the water. How many grams of water does Bob now have in the pitcher?

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