Atoms Practice Flashcard

Front

What can you conclude from the atomic number of an element?

Back

The atomic number indicates the number of protons in an atom of that element.

Front

What is a valence electron?

Back

Valence electrons are the electrons in the outermost energy level of an atom.

Front

What is the mass number of an atom?

Back

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

Front

What does the number 12 represent in atomic notation?

Back

The number 12 represents the atomic mass of the atom.

Front

What is the atomic number of Oxygen?

Back

The atomic number of Oxygen is 8.

Front

How many protons does an atom of Carbon have?

Back

An atom of Carbon has 6 protons.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

What is the significance of the outermost energy level in an atom?

Back

The outermost energy level determines the chemical properties and reactivity of the element.

Front

What is the Bohr model of the atom?

Back

The Bohr model depicts electrons orbiting the nucleus in defined energy levels.

Front

What is an isotope?

Back

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.