A pure substance is matter that has...

• definite physical and chemical properties that do not change.
• definite chemical properties that do not change.  
• definite physical properties that do change.  
• definite chemical and physical properties that do not change.  

A pure substance that cannot be separated into simpler substances by chemical or physical means.  

• Element
• Compound
• Mixture
• Chemical

Tags

NGSS.2-PS1-1

These contain only one kind of atom. 

• element 
• compound 
• mixture 
• water 

Tags

NGSS.MS-PS1-1

Elements can be broken down into simpler substances. 

• false 
• true 
• sometimes 

A compound is made of ________ atoms. 

• big 
• similar 
• different 

Tags

NGSS.MS-PS1-1

A molecule can be made of the same kind of atoms. 

• true
• false 
• Say What??!!!
• Dude!! Sweet!!

Tags

NGSS.MS-PS1-1

Carbon Dioxide is a ______ 

• compound 
• element 
• mixtures 
• Battle of Bunker Hill 

Tags

NGSS.MS-PS1-1

Salt is a _________. 

• compound 
• element 
• mixture 

Tags

NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO2

Tags

NGSS.MS-PS1-1