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Answer :
Final answer:
The Dooley sampler includes five commonly used laboratory instruments: crucible tongs, test tube holder, striker, forceps, and spatulas or a scoopula. These items are essential for handling various materials and chemicals safely in a high school chemistry lab setting.
Explanation:
The five items that typically come in the Dooley sampler are related to laboratory equipment used in high school chemistry classes. The items are:
- Crucible tongs— used to hold and move crucibles that may contain hot substances.
- Test tube holder— used to safely hold test tubes which may be hot or contain reactive substances.
- Striker— a tool used to spark a flame, usually for lighting a Bunsen burner or gas lamp.
- Forceps— a tool used to handle small objects or chemicals that should not be touched by hand.
- Spatulas or scoopula— tools used for transferring solid chemicals or powders.
A glass stirring rod is another common piece of laboratory equipment, but it is not typically listed among the top five items in the Dooley sampler; rather, it could be considered a sixth item if needed. Each item in the sampler plays a critical role in laboratory procedures and safety.
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