Chemical Change Starter

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Tags

NGSS.MS-PS1-2

A change in the size, shape, or state of matter.

• chemical change
• physical change
• chemical reaction
• electron change

Tags

NGSS.MS-PS1-4

Which of the following is NOT an example of a physical change?

• crumpled paper
• pencil sharpening
• shrunken clothing
• sour milk

Tags

NGSS.MS-PS1-2

Which of the following properties is a physical property?

• magnetism
• reactivity with oxygen
• flammability
• non-reactive

Which of the following is NOT a physical property?

• breaking a window
• color
• denisty
• freezing point

what is the definition of chemical change?

• any change that results in the formation of new chemical substances. 
• changing clothes
• matter cannot be created or destroyed, only change form
• changes affecting the form of a chemical substance, but not its chemical composition.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

what is the definition of physical change?

• any change that results in the formation of new chemical substances. 
• rusting
• changes affecting the form of a chemical substance, but not its chemical composition.
• any property that is measurable, whose value describes a state of a physical system

One cup of water is left outside for two days when it was checked there was only half a cup left. What happened?

• evaporation; chemical change
• condensation; physical change 
• evaporation; physical change
• condensation; chemical change

Tags

NGSS.MS-PS1-4

A solid piece of chocolate is melted and changed to liquid form. Which property of the piece of chocolate will remain the same?

• Texture
• Temperature
  
• Shape
•  Mass

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

A change where one or more new substances are created.

• Physical Change 
• Chemical Change 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5