1st Quarter Exam

A solid, liquid, and gas are all states of matter composed of —

• Atoms
• Compounds
• Organic material
• Bases

The particle theory of matter states that —

• all matter is made of one type of particle that constantly moves
• all matter is made of tiny particles that are in constant motion
• all matter is made of one type of particle that does not move
•  all matter is made of tiny particles that do not move

NaHCO3 is an example of —

• an abbreviation
•  a compound
•  an element
•  a mixture

Element is a

• pure substance
• compound
• mixture
• molecule

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO2

Tags

NGSS.MS-PS1-1

How many elements are represented in the compound?
Na₂CO₃

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

What cannot be broken down into other substances?

• Compound
• Mixture
• Solids
• Element

A combination of substances that are not chemically combined is called a(n)____________. 

• mixture
• compound
• physical

This picture represents which of the following?

• element
• compound
• mixture

This picture represents which of the following?

• element
• compound
• mixture