Glossary of Scientific Terms

What is an allotrope?

• A type of molecule

• A form of a pure substance

• One of two or more different substances formed by the same element

• A bulk property.

An atom is the _______ unit of a chemical element.

• largest

• smallest

• most complex

• simplest

Tags

NGSS.MS-PS1-1

Which of the following is a bulk property?

• Color

• Shape

• Characteristic of a material type

• Size

Bulk quantity refers to being in _______ amounts.

• small

• large

• divided

• separate

What does a molecular formula show?

• The color of a substance

• The number of atoms in each molecule

• The taste of a substance

• The weight of a molecule.

Tags

NGSS.MS-PS1-1

A molecule is made up of two or more _______.

• atoms

• cells

• elements

• compounds

Tags

NGSS.MS-PS1-1

Which of the following is a pure substance?

• Air

• Table salt

• Sand

• Water

Purity refers to the relative level of different _______ in a substance.

• colors

• atoms or molecules

• tastes

• sizes

Tags

NGSS.MS-PS1-1

Allotropes are examples of:

• Different elements

• Same element forming different substances

• Pure substances

• Bulk properties

The smallest unit of a chemical element is called a(n) _______.

• molecule

• atom

• compound

• mixture