Elements and Compounds

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements chemically combine.

Tags

NGSS.MS-PS1-1

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

How are elements represented?

Back

Elements are represented by unique chemical symbols, such as H for hydrogen and O for oxygen.

Front

What is the difference between an element and a compound?

Back

An element consists of only one type of atom, while a compound consists of two or more different types of atoms chemically bonded together.

Front

Is water (H2O) an element or a compound?

Back

Water (H2O) is a compound because it is made of two different elements: hydrogen and oxygen.

Tags

NGSS.MS-PS1-1

Front

What does the chemical symbol 'Fe' represent?

Back

The chemical symbol 'Fe' represents the element iron.

Front

Can compounds be broken down into simpler substances?

Back

Yes, compounds can be broken down into simpler substances through chemical reactions.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

Give an example of a compound.

Back

An example of a compound is carbon dioxide (CO2), which is made of carbon and oxygen.

Tags

NGSS.MS-PS1-1

Front

What is the significance of the periodic table?

Back

The periodic table organizes all known elements based on their properties and atomic structure.

Tags

NGSS.HS-PS1-1