A substance has a melting point of 0 degrees Celsius and a boiling point of 100 degrees Celsius.  The substance is most likely _________

• table salt 
• water 
• hydrogen 
• gold 

Tags

NGSS.MS-PS1-4

When a physical change in a sample occurs, which of the following does not change?

• composition 
• shape 
• temperature 
• volume 

____________properties can only be observed when the substance in a sample of matter are changing into different substances

• pure substance 
• physical 
• mixture 
• chemical 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A mixture can be classified as a solution, suspension or colloid based on the ___________

• size of its smallest particles 
• number of particles it contains 
• size of its largest particles 
• color of its particles 

Flammability is a material's ability to burn in the presence of _____

• carbon dioxide 
• hydrogen 
• nitrogen 
• oxygen 

What method can be used to separate parts of a liquid mixture when the entire mixture can pass through a filter?

• screening 
• filtration 
• distillation 
• straining 

Physical or chemical change?
A solid is crushed into a powder?

• physical change 
• chemical change 

Which of the following is not a pure substance?

• carbon dioxide 
• cereal 
• helium 
• water

Which of the following is not a clue that a chemical change has occurred? 

• change in the shape 
• change in color 
• production of a gas 
• formation of a precipitate 

Tags

NGSS.MS-PS1-2

If an unknown substance cannot be broken down into simpler substances, it is _____

• a compound 
• an element 
• a mixture 
• none of the options