chemistry comprehension 1

Front

What is the formula for calcium phosphide?

Back

Ca₃P₂

Front

In which period of the periodic table is oxygen located?

Back

Period 2

Front

What is the electron configuration of an oxygen atom?

Back

1s² 2s² 2p⁴

Front

What is the smallest unit of silver?

Back

Atom

Front

What does the Aufbau Principle state?

Back

Electrons occupy orbitals of lowest energy first.

Front

What is the definition of an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is the Pauli Exclusion Principle?

Back

No two electrons in an atom can have the same set of four quantum numbers.

Front

What is Hund's Rule?

Back

Electrons will fill degenerate orbitals singly before pairing up.

Front

What is the significance of the atomic number?

Back

It represents the number of protons in an atom's nucleus and defines the element.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.