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According to "Newton's First Law" an object at rest will begin to move when it is acted upon an unbalanced force.
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Change the places of 'acts against the motion of an object' and 'causes an object to change speed or direction'
That is correct c
Explanation
There are FOUR electrons in the 3p sub-level of sulfur....
Answer:
II) Objects made of silver become tarnished.
Explanation:
Physical properties are the properties which can be observed without changing identity of substance.
Chemical properties are the properties which describe how the substance changes into the different substance completely.
Boiling is an example of physical change in state of the substance. Color is also an example of physical property like boiling point and hence these are constants. The reason of the color is that the chromium ions shows certain colors as the electrons are excited due to absorption of the light. The tarnishing of the silver is an example of the chemical change which occurs due to the reaction of the silver with oxygen. This is also known as corrosion.
