Atomic Structure

Front

What does the atomic number represent in an atom?

Back

The atomic number represents the number of protons in the nucleus of an atom.

Front

How do you calculate the mass number of an atom?

Back

The mass number is calculated by adding the number of protons and neutrons in the nucleus.

Front

If an atom has 10 protons and 15 neutrons, what is its mass number?

Back

The mass number is 25 (10 protons + 15 neutrons).

Front

What is the relationship between protons, neutrons, and mass number?

Back

The mass number is the sum of protons and neutrons; neutrons can be calculated by subtracting the number of protons from the mass number.

Front

What is the atomic number of an atom with 3 protons?

Back

The atomic number is 3.

Front

What is the significance of neutrons in an atom?

Back

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

Front

How can you determine the number of neutrons in an atom if you know the mass number and atomic number?

Back

Subtract the atomic number (number of protons) from the mass number.

Front

What is the mass number of an atom with 7 protons and 7 neutrons?

Back

The mass number is 14 (7 protons + 7 neutrons).

Front

What does a higher atomic number indicate about an element?

Back

A higher atomic number indicates that the element has more protons and is located further along the periodic table.

Front

Can an atom have the same number of protons and electrons?

Back

Yes, a neutral atom has the same number of protons and electrons.