Chemical Reactions

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•
Chemistry
•
9th - 12th Grade
•
Hard
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11 questions
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1.
FLASHCARD QUESTION
Front
Which of the following is not evidence of a chemical reaction? Options: Formation of a precipitate, Production of gas, Change in temperature, Change in state of matter
Back
Change in state of matter
2.
FLASHCARD QUESTION
Front
A chemical reaction is...
Back
when a substance undergoes a change to form a new substance
3.
FLASHCARD QUESTION
Front
Translate the word equation: Liquid nitrogen and oxygen gas combine to form nitrogen monoxide gas.
Back
N2(l) + O2(g) → NO(g)
4.
FLASHCARD QUESTION
Front
Aqueous
Back
dissolved in water/solution
5.
FLASHCARD QUESTION
Front
Mass cannot be ____ or _____. Options: made, changed, created, destroyed, rearranged, unmade, stagnant, unchanging
Back
created, destroyed
6.
FLASHCARD QUESTION
Front
Balance the equation: ____MgO + ____H2O → ____Mg(OH)2
Back
1,1,1
7.
FLASHCARD QUESTION
Front
What type of reaction is the following:
CH4 + O2 → CO2 + 2H2O
Options: double replacement, single replacement , combustion, synthesis
Back
combustion
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