Physical Science Semester Exam Review

Front

What happens to particles in an object at higher temperatures?

Back

Particles in an object move faster.

Front

What does 'd' represent in scientific terms?

Back

Atomic mass (amu).

Front

Why is scientific notation used?

Back

It is used for writing very small or very big numbers.

Front

In the notation chlorine-37, what does the '37' represent?

Back

Mass number.

Front

What does 'a' represent in scientific terms?

Back

Atomic number.

Front

What is the definition of atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is the definition of mass number?

Back

The total number of protons and neutrons in an atom's nucleus.

Front

What is the purpose of scientific notation?

Back

To simplify the representation of very large or very small numbers.

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while mass number is the total number of protons and neutrons in a specific isotope.

Front

What is an isotope?

Back

Atoms of the same element that have different numbers of neutrons.