Front

What is the mass number of an atom with 10 protons and 15 neutrons?

Back

25

Front

What is the mass number of an atom with 3 protons and 4 neutrons?

Back

7

Front

What does the letter 'C' represent in the periodic table?

Back

Chemical symbol

Front

What subatomic particles are found in the nucleus of an atom?

Back

Protons and Neutrons

Front

How many protons are in an atom with an atomic number of 15?

Back

15

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 atomic mass?

Back

The weighted average mass of an element's isotopes.

Front

What is the charge of a proton?

Back

Positive charge.

Front

What is the charge of a neutron?

Back

No charge (neutral).

Front

What is the charge of an electron?

Back

Negative charge.