Review for Mid Term Exam December 2024

Front

What is the proper way to determine the identity of an unknown substance?

Back

Waft it toward your nose.

Front

What instrument uses a lens to make tiny things look larger?

Back

Microscope.

Front

What substance will float on water?

Back

Ammonia and turpine.

Front

What is the definition of a microscope?

Back

An instrument that uses a lens to magnify small objects.

Front

What does it mean to waft?

Back

To gently move air towards your nose to smell something.

Front

What is the importance of safety when handling unknown substances?

Back

To prevent harm or injury.

Front

What is the difference between a solid, liquid, and gas?

Back

Solids have a definite shape, liquids take the shape of their container, and gases fill the entire space available.

Front

What is buoyancy?

Back

The ability of an object to float in a fluid.

Front

What is the principle of density?

Back

Density is mass per unit volume; objects less dense than the fluid will float.

Front

What is the scientific method?

Back

A systematic process for experimentation to explore observations and answer questions.