Molecules and Compounds

Front

What is the center of an atom called?

Back

The center of an atom is called the nucleus.

Front

True or False: The tiniest bit of water that still is water is a molecule of water.

Back

True.

Tags

NGSS.MS-PS1-1

Front

In the expression H₂O, what does the '2' represent?

Back

The '2' represents 2 atoms of hydrogen.

Tags

NGSS.MS-PS1-1

Front

What are carbon and hydrogen in relation to methane (CH₄)?

Back

Carbon and hydrogen are elements, and methane is a compound.

Tags

NGSS.MS-PS1-1

Front

What is a substance made up of atoms of more than one element called?

Back

A substance made up of atoms of more than one element is called a compound.

Tags

NGSS.MS-PS1-1

Front

What is a molecule?

Back

A molecule is the smallest unit of a chemical compound that retains its chemical properties.

Tags

NGSS.MS-PS1-1

Front

What is the difference between an element and a compound?

Back

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

Front

What is the chemical formula for water?

Back

The chemical formula for water is H₂O.

Tags

NGSS.MS-PS1-1

Front

What do we call a substance that cannot be broken down into simpler substances?

Back

A substance that cannot be broken down into simpler substances is called an element.

Front

What is the term for a combination of two or more elements that are chemically bonded?

Back

The term for a combination of two or more elements that are chemically bonded is a compound.