객관식
When setting up glassware for a vacuum filtration, which of the following steps should you always take?
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4. BONUS: Lab Techniques and Procedures
Laboratory Materials
객관식
Which of the following is a chemical or chemically treated substance commonly used in laboratory test procedures?
A
Bunsen burner
B
Test tube rack
C
Beaker
D
Reagent
검증된 단계별 안내1
Understand the question is asking for a substance that is chemical or chemically treated and commonly used in laboratory test procedures.
Identify that items like Bunsen burner, test tube rack, and beaker are laboratory equipment, not substances.
Recall that a reagent is a chemical or chemically treated substance used to cause a reaction or detect the presence of another substance in lab tests.
Recognize that reagents are essential in chemical analysis and experiments because they interact chemically with other substances.
Conclude that among the options, 'Reagent' fits the description of a chemical or chemically treated substance used in laboratory procedures.
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