Physical & chemical properties, changes, & mixtures

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

• physical properties
• chemical properties

Tags

NGSS.MS-PS1-2

Which type of property is the ability to conduct electricity?

• physical property
• chemical property

Properties that can be observed without changing the identity of the substance.

• Physical
• Chemical

Example for physical property

• odor
• burns in air
• reacts with water to create hydrogen gas
• rust

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

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

• crumpled paper
• pencil sharpening
• shrunken clothing
• rust

Tags

NGSS.MS-PS1-2

A change where one or more new substances are created.

• Physical Change 
• Chemical Change 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter.

• Evaporation
• Density
• Physical Properties Of Matter
• Chemical Properties of Matter

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Silver is a white metal that is an excellent conductor. Silver tarnishes when exposed to air and light. The density of silver is 10.49 g/cm³ The melting point is 962^oC and the boiling point is 2000^oC. A chemical property of silver is

• melting point
• boiling point
• density
• tarnishing

Juan observes these properties of an unknown substance. The substance is white, has a crystaline structure, dissolves in water and burns when a flame is applied. What is a chemical property of the substance?

• color
• crystaline structure
• dissolves
• burns

Tags

NGSS.MS-PS1-5