Chemistry Unit

The most basic building block of matter (smallest part of an element) is called a(n) __________. 

• Product
• Reactant
• Atom
• Molecule

Helium, Carbon, and Iron are all examples of __________.

• elements
• compounds
• mixtures
• molecules

A(n) _____ is a unique substance that forms when two or more elements combine chemically.

• element
• compound
• mixture
• all of the above

Tags

NGSS.MS-PS1-5

Which of the following is a compound?

• Air
• Lemonade
• Carbon Dioxide
• Bread

Tags

NGSS.MS-PS1-1

A compound always has the same ___________ in the same proportions (ratio).

• elements
• carbons
• mixtures
• ions

The properties of compounds are ______________________ the elements that  form them.

• the same as
• more intense than
• different from
• less visible than

A(n) _____ is the smallest particle of a compound that still has the compound’s properties.

• atom
• molecule
• element
• mixture

Tags

NGSS.MS-PS1-1

This is a(n) __________.

• atom
• element
• mixture
• molecule

Tags

NGSS.MS-PS1-1

Examples of mixtures include ______________.

• lemonade
• salad dressing
• salt water
• all of these

The components of a mixture ______________________ when they combine.

• keep physical properties
• form chemical bonds
• have new chemical properties
• all of these

Tags

NGSS.MS-PS1-2