Elements, Compounds, Mixtures

 A substance that cannot be broken down into any other substance by ordinarychemical means is called —

• molecule
• mixture
• element
• compound

Two or more physically combined substances form —

• a compoud
• an acid
• an element
• a mixture

Tags

NGSS.MS-PS1-1

NaHCO₃ is an example of —

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

Tags

NGSS.MS-PS1-1

What is an example of a mixture?

• Table salt
• Salt water
• Oxygen
• Air

A substance made of only one type of atom is called —

• an element
• a mixture
• a compound
• a salt

Tags

NGSS.MS-PS1-1

What is an example of an element?

• Oxygen
• Pure water
• Air
• Table salt

Two or more substances in the same place but NOT chemically combined or in a specific ratio is called —

• a compound 
• a pure substance
• an element
• a mixture

Contains two or more atoms combined

• Elements
• Compounds
• Mixtures

Tags

NGSS.MS-PS1-1

Elements can be broken down into simpler substances. 

• false 
• true 
• sometimes 

Tags

NGSS.MS-PS1-2

Examples are diamonds (C) and Uranium (U)

• elements

• mixtures

• compounds

Tags

NGSS.HS-PS1-1