
law of conservation of mass
Flashcard
•
Chemistry
•
7th Grade
•
Practice Problem
•
Hard
Wayground Content
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51 questions
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1.
FLASHCARD QUESTION
Front
A student mixes 125 grams of sugar, 250 grams of water and 5 grams of flavoring. The solution weighs...
Back
380 grams
2.
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
3.
FLASHCARD QUESTION
Front
If reaction starts with 20g of reactants, it should produce?
Back
a total of 20g of products
4.
FLASHCARD QUESTION
Front
What will weigh more when a chemical change is complete? The reactants before the chemical reaction, or the product after the reaction is complete?
Back
They both will weigh the same
5.
FLASHCARD QUESTION
Front
Jamie weighs a glass of water and observes its weight to be 12 ounces. Jamie then adds 6 ice cubes to the glass of water. Each ice cube weighs one ounce. After all of the ice cubes have melted, what will be the approximate weight of the glass of water?
Back
18 ounces
6.
FLASHCARD QUESTION
Front
According to the Law of Conservation of Mass, what happens to the wood and oxygen when it is burned?
Back
The atoms in the wood and oxygen rearrange and form smoke and ash.
7.
FLASHCARD QUESTION
Front
What are the starting substances in a chemical equation?
Back
Reactants
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