Physical changes are those which do not affect the chemical properties of a substance. For example, when a paper is cut, the two pieces obtained are still paper. The chemical properties have not changed. Only, physically when one piece is cut to two. A chemical change occurs when the chemical properties change and a new substance with different chemical properties is obtained. For example, when the paper is burnt, it turns to ashes. Hence, this is a chemical change.
When a substance undergoes a physical change, the physical properties of the substance changes like the state (solid to liquid during melting), shape, size, volume etc. Many physical changes are reversible whereas, in general many chemical changes are irreversible.
Answer:
Hey hi,
Explanation:
<em>Parachutes are designed to reduce terminal Velocity, so when a person is near to ground will have less speed and the avg speed of person hitting the ground </em><em>with</em><em> parachutes will have 17 mph so which makes the person to easily walk off or fell sleep. </em>
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Hope u get the point Please mark it as brainliest!</h3>
I think it might be immortal? Not sure what is your point
A simple electromagnet consisting of a coil of insulated wire wrapped around an iron core<span>. A </span>core<span> of ferromagnetic material like </span>iron<span> serves to increase the magnetic field created. The strength of magnetic field </span>generated<span> is proportional to the amount of </span>current<span> through the winding.</span>
Answer:
e telescopes
Explanation:
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