Review - Atoms and Electron City

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element. It consists of a nucleus made of protons and neutrons, surrounded by electrons in orbitals.

Front

What is the atomic number?

Back

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

Front

How many electrons does silicon (Si) have?

Back

Silicon (Si) has 14 electrons.

Front

What is the maximum number of electrons that can occupy a single orbital?

Back

An orbital can hold a maximum of 2 electrons.

Front

What happens to an atom when it loses an electron?

Back

When an atom loses an electron, it becomes positively charged and is called a cation.

Front

What is a cation?

Back

A cation is a positively charged ion that results from the loss of one or more electrons.

Front

What is an anion?

Back

An anion is a negatively charged ion that results from the gain of one or more electrons.

Front

What is the significance of electron configuration?

Back

Electron configuration describes the distribution of electrons in an atom's orbitals, which determines its chemical properties and reactivity.

Front

What is the difference between a neutral atom and an ion?

Back

A neutral atom has an equal number of protons and electrons, while an ion has an unequal number, resulting in a net charge.

Front

What is the role of protons in an atom?

Back

Protons determine the atomic number and identity of an element, and they contribute to the positive charge of the nucleus.