Energy and Chemical / Physical Changes

What is an example of a Chemical change?

• Ripped paper

• boiled egg

• cracked egg

• sugar in water

Which is a physical change?

• burning match 
• vinegar in baking soda 
• melting butter
• cooking an egg

Tags

NGSS.MS-PS1-4

Which is a Chemical property?

• Thermal Conductivity 
• Density
• Malleability 
• Flammability 

Tags

NGSS.HS-PS1-1

Which of the following is a chemical property of water?

• Reacts with pure sodium.
• Boils at 100 ^oC.
• Dissolves sugar easily. 
• Has a density of 1 gm/mL

Tags

NGSS.MS-PS1-2

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties
• liquid properties
• real properties

Tags

NGSS.MS-PS1-2

Which type of property is the ability to conduct electricity?

• physical property
• chemical property

Tags

NGSS.MS-PS2-3

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

What characteristic defines all chemical changes?

• There is a change of state.
• Electricity is produced.
• A new material is formed.
• Bubbles are produced. 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Define a Chemical Property

• A property which depends on the objects size or matter.
• A property of matter not involving in its manifestation a chemical change
• A property or behavior of a substance which undergoes a chemical change or reaction.
• A property which makes the object smell or taste different.

Tags

NGSS.MS-PS1-1

Define a Physical Property

• A property of matter not involving in its manifestation a chemical change
• A property in which stops a chemical reaction from occuring.
• A property or behavior of a substance which undergoes a chemical change or reaction.
• A property which makes the object smell or taste different.

Tags

NGSS.MS-PS1-1