CHEM Lab Assessment
Flashcard
•
Chemistry
•
University
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What class of reaction is represented by the equation Mg + HCl ⟶ MgCl2 + H2?
Back
Single replacement reaction: A reaction where one element replaces another in a compound.
2.
FLASHCARD QUESTION
Front
What is the length of a standard straw used in a lab?
Back
8 cm: The typical length for a lab straw.
3.
FLASHCARD QUESTION
Front
What is the molecular geometry of H2S?
Back
Bent: The molecular shape due to the presence of lone pairs on the central atom.
4.
FLASHCARD QUESTION
Front
What is a graduated cylinder used for in a lab?
Back
A graduated cylinder is used to measure the volume of liquids accurately.
5.
FLASHCARD QUESTION
Front
What is the chemical formula for Phosphorous trichloride?
Back
PCl3: Indicates one phosphorus atom bonded to three chlorine atoms.
6.
FLASHCARD QUESTION
Front
Define a combustion reaction.
Back
A combustion reaction is a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of light or heat.
7.
FLASHCARD QUESTION
Front
What is the difference between a synthesis and a decomposition reaction?
Back
Synthesis: Two or more substances combine to form a new compound. Decomposition: A single compound breaks down into two or more simpler products.
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