Physics, 28.08.2019 06:30 briannaparker11

Elaborate on the reason(s) that matter is said to move even as in a solid state.
a) the particles are bound through intermolecular forces but are able to move past each other with relative freedom.
b) the particles have sufficient energy to become an ionized gas and are in the most common state of matter in the universe.
c) the particles are not able to move out of their positions relative to one another, but do have small vibrational movements.
d) the particles are not bound to one another, move quickly, have a low density, and are able to spread apart from one another if unconstrained.
brad and matt are working in the lab. they noticed that when they mixed two dilute solutions together, the reaction between them happened very slowly. which of matt's suggestions would best to increase the rate of this reaction?
a) increase the concentration of both solutions
b) decrease the concentration of both solutions
c) increase the concentration of one of the solutions
d) decrease the concentration of one of the solutions
identify the correct order of increasing intermolecular force of attraction for the three most common states of matter.
a) liquid → solid → gas
b) solid → liquid → gas
c) gas → liquid → solid
d) gas → solid → liquid

Answers: 2

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Answers

1) The correct answer is
C)The particles are not able to move out of their positions relative to one another, but do have small vibrational movements.
In solids, in fact, particles are bound together so they cannot move freely. However, they can move around their fixed position with small vibrational movements, whose intensity depends on the temperature of the substance (the higher the temperature, the more intense the vibrations). For this reason, we say that matter moves also in solid state.

2) The correct answer is
A)increase the concentration of both solutions
In fact, when we increase the concentration of both solutions, we increase the number of particles that react in both solutions; as a result, the speed of the reaction will increase.

3) The correct answer is
C)gas → liquid → solid
In gases, in fact, particles are basically free to move, so the intermolecular forces of attraction are almost negligible. In liquids, particles are still able to move, however the intermolecular forces of attraction are stronger than in gases. Finally, in solids, particles are bound together, so they are not free to move and the intermolecular forces of attraction are very strong.

Answer from: Quest

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

Answer from: Quest

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.

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Elaborate on the reason(s) that matter is said to move even as in a solid state.
a) the partic...

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