Element or Compound

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Front

What is the defining feature of a compound?

Back

The defining feature of a compound is that it must contain at least two different elements.

Front

Can an element exist in different forms?

Back

Yes, elements can exist in different forms known as allotropes, such as carbon which can exist as graphite or diamond.

Front

What is the smallest unit of an element?

Back

The smallest unit of an element is an atom.

Front

What is the smallest unit of a compound?

Back

The smallest unit of a compound is a molecule, which consists of two or more atoms bonded together.

Front

How are compounds classified?

Back

Compounds can be classified into two main categories: ionic compounds and covalent compounds.

Front

What is an ionic compound?

Back

An ionic compound is formed when atoms transfer electrons, resulting in the formation of charged ions that attract each other.

Front

What is a covalent compound?

Back

A covalent compound is formed when atoms share electrons to achieve stability.

Front

Give an example of an element.

Back

An example of an element is oxygen (O).