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Chrome (chromium) is the mirror like finish on older cars.

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16y ago

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What crystals of its salts are known for their crisp colors this metal puts the shine on your car bumper?

The crystals of salts that are known for their crisp colors that causes metal to shine on a car bumper is Chromium. Chromium is used in chrome plating on many objects.


When an old car sits in a junk yard and rusts is it a chemical change?

Rusting of a metal, be it a car or any other item, represents an oxidation reaction, and this is a chemical change because the metal is becoming a metal oxide in the process.


What metal is used in car bodies and is in blood?

Iron


Why a person safe from lightning inside a car that has a metal body?

A person is safe from lightning inside a car with a metal body because the metal acts as a Faraday cage. When lightning strikes the car, the metal body acts as a conductor, directing the electrical current around the occupants and safely into the ground, protecting them from electrocution.


Why are bumper cars an example of Newtons first law?

It points to the law of linear conservation of momentum, the total momentum after collision is the same as before the collision, say each car including driver has a mass of 200 kg, car A is moving at 5 metres / second, car B is stationary. Momentum of the moving car makes up all the momentum prior to collision and is = mass * velocity = 200 * 5 = 1000 kg.m/s, assuming an elastic(or perfect) collision, in which no energy is lost as heat or noise, the momentum after the collision will still be 1000 kg.m/s, but the mass will have increased to 400 kg (total of both cars), so the equation after collision: 1000 = 400 * velocity, velocity = 1000 / 400 = 2.5 metres / second