Midterm Exam

Front

What is the proper way to heat a substance in a test tube?

Back

Always point the open end of the tube away from all people.

Front

What is the best synonym for 'alloy'?

Back

Blend.

Front

What does the number at the top of an atom on a periodic table represent?

Back

Atomic number.

Front

What is the first step in the scientific method?

Back

Recognizing a problem.

Front

What might happen if the strong force didn't exist?

Back

Atomic nuclei would fly apart.

Front

Define 'atomic number'.

Back

The number of protons in the nucleus of an atom.

Front

What is an alloy?

Back

A mixture of two or more metals.

Front

What is the significance of the strong nuclear force?

Back

It holds atomic nuclei together.

Front

What is the scientific method?

Back

A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is the difference between atomic mass and atomic number?

Back

Atomic mass is the weighted average mass of an atom's isotopes, while atomic number is the number of protons.