Midterm Exam

Front

What is a fume hood?

Back

A fume hood is a ventilated enclosure in a laboratory that is designed to safely handle hazardous substances by pulling fumes and vapors away from the user.

Front

Why is it important to use a fume hood?

Back

It is important to use a fume hood to protect laboratory personnel from inhaling toxic fumes and to prevent fire hazards.

Front

What is a scoopula used for?

Back

A scoopula is a laboratory tool used for transferring solid chemicals or powders.

Front

What type of glassware is best for transferring liquids?

Back

A test tube is useful for transferring liquids from a larger container to a smaller one.

Front

What is the difference between molecules and atoms?

Back

Molecules consist of two or more atoms bonded together, while atoms are the basic building blocks of matter.

Front

What is the first step in the scientific method?

Back

The first step in the scientific method is to make observations.

Front

What is the purpose of making a hypothesis?

Back

A hypothesis is a testable prediction about the outcome of an experiment based on observations.

Front

What is the role of a beaker in a laboratory?

Back

A beaker is a common piece of laboratory glassware used for mixing, stirring, and heating liquids.

Front

What safety precautions should be taken when using a fume hood?

Back

Always ensure the fume hood is functioning properly, keep the sash at the recommended height, and avoid placing your head inside the hood.

Front

What is the significance of measuring liquid volumes accurately?

Back

Accurate measurement of liquid volumes is crucial for the reliability and reproducibility of experimental results.