Why graphite can rub off the pencil onto the paper

Answers

Answer 1

Answer: Graphite is an extremely soft material and is formed in layers as well.This combination of traits allows for the graphite to scrape off of the pencil tip and onto the paper.

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At higher elevations, the boiling point of water decreases, due to the decrease in atmospheric pressure. As a result, what conclusion could be drawn from the boiling egg?a.At higher elevations, it would take less time to hard boil an egg, because there is less atmospheric pressure.
b.
At higher elevations, it would take longer to hard boil an egg, because there is a lower boiling point, so the egg is boiling in water at a lower temperature.
c.
At higher elevations, it would take less time to hard boil an egg, because there is a lower boiling point. Therefore it would take less time to achieve the boiling point.
d.
At higher elevations, it would take longer to hard boil an egg, because it would take longer to achieve the boiling point.

Answers

I believe the correct response is A. At higher elevations it would take less time to hard boil an egg, because there is less atmospheric pressure.

When a liquid is cooled, the kinetic energy if the particles A. Decrease B. Increases C. Remains the same. The force of attraction between the particles A. Decrease B. Increases C. Remains the same , the space between the particles A. Decrease B. Increases C. Remains the same

Answers

Answer:

(A.) Kinetic energy decreases
(B.) Force of attraction increases
(C.) Space between particles remains the same

Explanation:

Kinetic energy is the energy in motion. Cooling if liquid would cause decreased temperature and hence slow down the oscillation of the particles.

Likewise, increased heat reduces the force of attraction between said particles, which allowed for their free movement. So the cooling would have opposite effect.

Finally, the space between the particles would remain the same as it was originally, as their force of attraction is increased in the cooling process, they would take the form they are held in.

I hope this was helpful and concise?

Describe the motion of the atoms of a substance as it changes from a solid to a liquid. use complete sentences to explain the following concepts in your written response: what is the change in particle speed?