Law of conservation of Mass

Flashcard
•
Chemistry
•
9th - 11th Grade
•
Hard
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20 questions
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1.
FLASHCARD QUESTION
Front
Matter can not be created nor destroyed: it can only be
Back
Transformed, changed
2.
FLASHCARD QUESTION
Front
The number to the lower side of an element is a
Back
Subscript
3.
FLASHCARD QUESTION
Front
The number in front of a compound or element is a
Back
Coefficient
4.
FLASHCARD QUESTION
Front
Which of these is not a chemical reaction? Options: Burning of wood, Milk going bad, Mixing vinegar and baking soda, Melting of ice
Back
Melting of ice
5.
FLASHCARD QUESTION
Front
The coefficient in 3H2O is
Back
3
6.
FLASHCARD QUESTION
Front
If reaction starts with 20g of reactants, what is the total mass of products produced?
Back
a total of 20g of products
7.
FLASHCARD QUESTION
Front
In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have? Options: 4g, 5g, 9g, 14g
Back
4g
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