1st partial 1st exam Inorganic chemestry

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What personal protective equipment (PPE) should always be worn in the laboratory?

• Cap, sandals and sunglasses
• Lab coat, safety glasses and gloves
• Shower cap and wool gloves
• Casual clothing and sunglases

Where should food and drinks be stored in the laboratory?

• In the laboratory refrigerator
• On a shelf
• In the preparation area
• Food or drinks are not allowed to be stored in the laboratory

What should you do if an accident or spill occurs in the laboratory?

• Continue with the experiment
• Clean up quickly without telling anyone
• Report it immediately to the teacher
• Run out of the lab

Why is it important to label containers with the correct chemical names and hazard warnings?

• To make them look more professional
• To avoid confusion and accidents
• Because it is an optional requirement
• To decorate the lab

What type of variable is intentionally changed in an experiment?

• Dependent
• Independent
• Controlled
• Random

Which section of the report includes statistical analysis and the organization of tables and graphs?

• Materials and methods
• Results
• Introduction
• Conclusion

What is the main purpose of the hypothesis in an experiment?

• Predict the results
• Describe the materials
• Organize data
• Evaluate safety

What actions should be taken to keep the work area clean and safe?

• Only clean at the end of the day
• Put all equipment away
• Keep the area free of unnecessary materials and clean up spills immediately
• Leave waste on the work table