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 element's identity.

Front

How do you determine the mass number of an atom?

Back

The mass number is the sum of the number of protons and neutrons in the nucleus of an atom.

Front

What element has 11 protons?

Back

Sodium (Na) has 11 protons.

Front

What happens to the number of protons as you move down a group in the periodic table?

Back

The number of protons increases as you move down a group.

Front

What is the relationship between the number of protons and the element's identity?

Back

The number of protons in an atom determines the element's identity; each element has a unique number of protons.

Front

What element has 32 protons?

Back

Germanium (Ge) has 32 protons.

Front

What is the trend in the number of protons as you move left to right across a period in the periodic table?

Back

The number of protons increases as you move left to right across a period.

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom, with no electric charge.

Front

What is the difference between an atom and an element?

Back

An atom is the smallest unit of matter that retains the properties of an element, while an element is a pure substance made of only one type of atom.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.