Of the three properties of color, hardness, and reflectivity, which property or properties describe how a material interacts with light?(1 point)
reflectivity only
reflectivity only
color, hardness, and reflectivity
color, hardness, and reflectivity
hardness and reflectivity only
hardness and reflectivity only
color and reflectivity only
color and reflectivity only
Use the following observations about a material to answer the question.
The material is shiny and reflects light.
An iron nail is able to scratch the material.
Which statement best classifies the observations?
(1 point)
Neither observation uses a physical property of matter.
Neither observation uses a physical property of matter.
Both observations use a physical property of matter.
Both observations use a physical property of matter.
Only observation 1 uses a physical property of matter.
Only observation 1 uses a physical property of matter.
Only observation 2 uses a physical property of matter.
What is conductivity?(1 point)
a type of energy involving electric current or power
a type of energy involving electric current or power
a flow of thermal energy between materials of different temperatures
a flow of thermal energy between materials of different temperatures
a property of materials that allows something to flow through them
a property of materials that allows something to flow through them
a material that resists the flow of something through it
What does it mean that a material is an electrical conductor?(1 point)
It can direct electricity to flow in the proper direction.
It can direct electricity to flow in the proper direction.
The material is made of metal.
The material is made of metal.
Electricity can flow freely through the material.
Electricity can flow freely through the material.
The material will prevent the flow of electricity.
Evaporation changes a ____.(1 point)
liquid to a gas
liquid to a gas
solid to a liquid
solid to a liquid
liquid to a solid
liquid to a solid
gas to a liquid
gas to a liquid
1- color and reflectivity only.
2- Both observations use a physical property of matter.
3- a property of materials that allows something to flow through them.
4- Electricity can flow freely through the material.
5- liquid to a gas.
1- Of the three properties of color, hardness, and reflectivity, which property or properties describe how a material interacts with light?
2- Use the following observations about a material to answer the question.
The material is shiny and reflects light.
An iron nail is able to scratch the material.
Which statement best classifies the observations?
3- What is conductivity?
4- What does it mean that a material is an electrical conductor?
5- Evaporation changes a ____.
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