Exploring Atomic Structure and Properties

Front

What is the mass number of an atom?

Back

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

Front

What does the atomic number represent?

Back

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

Front

What is the electron cloud model?

Back

The electron cloud model describes electrons as being located in a cloud around the nucleus, rather than in fixed orbits.

Front

How does electron configuration affect chemical behavior?

Back

Electron configuration explains the arrangement of electrons in an atom, which influences how the atom interacts with other atoms.

Front

What is an isotope?

Back

An isotope is a variant of an element that has the same number of protons but a different number of neutrons.

Front

What is the correct symbol for Fluorine-18?

Back

The correct symbol is 18F.

Front

What is the difference between mass number and atomic mass?

Back

Mass number is the total number of protons and neutrons, while atomic mass is the weighted average mass of an element's isotopes.

Front

What is the significance of the valence electrons?

Back

Valence electrons are the outermost electrons that determine an atom's chemical properties and reactivity.

Front

What is the principle of conservation of mass in chemical reactions?

Back

The principle states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

What is a cation?

Back

A cation is a positively charged ion that has lost one or more electrons.