Chem H Element Box Review

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the identity of the element.

Front

How do you calculate the average of a set of numbers?

Back

To calculate the average, sum all the numbers and then divide by the total count of the numbers.

Front

What is the formula to calculate the percentage of successful experiments?

Back

Percentage = (Number of successful experiments / Total number of experiments) x 100.

Front

How many protons are in a sulfur atom?

Back

A sulfur atom has 16 protons.

Front

How many protons are in a copper atom?

Back

A copper atom has 29 protons.

Front

What is the relationship between neutrons and atomic mass?

Back

Neutrons contribute to the atomic mass of an atom, along with protons. The atomic mass is approximately the sum of protons and neutrons.

Front

What is the significance of neutrons in an atom?

Back

Neutrons help stabilize the nucleus of an atom and contribute to its atomic mass.

Front

What is the average reaction time if a student records 24, 26, and 19 seconds?

Back

The average reaction time is 23 seconds.

Front

What is the total number of neutrons in a sulfur atom?

Back

A sulfur atom has 16 neutrons.

Front

What is the total number of neutrons in a copper atom?

Back

A copper atom has 35 neutrons.