PHYSICS MIDDLE SCHOOL

Cecil is working with samples of chlorine (Cl), oxygen (O), bromine (Br), and silver (Ag). The samples are all at room temperature. Which substance is most likely the most dense?chlorine
oxygen
bromine
silver

Answers

Answer 1

Answer:

Answer: Option (d) is the correct answer.

Explanation:

As it is known that density is the amount of mass divided by the volume.

Mathematically, Density = $(mass)/(volume)$

Since, mass is directly proportional to density. Hence, more is the mass of an object more will be its density.

At room temperature chlorine exists as a gas and its molar mass is 35 g/mol.

At room temperature oxygen exists as a gas and its molar mass is 32 g/mol.

At room temperature bromine exists as a liquid and its molar mass is 80 g/mol.

At room temperature silver exists as a solid and its molar mass is 108 g/mol.

As the mass of silver is greater and it exists as a solid at room temperature. Hence, it will be most dense in nature.

Therefore, we can conclude that out of the given options silver substance is most likely the most dense.

Answer 2

Answer: The answer is silver. Silver is the most dense, it's a solid so it is more compact and is obviously the most likely to have more mass to it.

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Explain why atoms move at different speeds depending on whether they are in liquid or solids

Answers

Atoms move a lot faster in liquid because the molecules have more room to move freely. On the other hand, in a solid the molecules are very tight together, giving them little room to wiggle around.

1. ________ is a force that attracts all matter to each other2. When the only force affecting an object is gravity that object is in __________

Answers

1. The answer is gravity. This is the power that draws two bodies to each other, the force that causes objects to drop toward the ground and the planets to orbit the sun. The huger an object is, the tougher it’s gravitational pull.
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When is an object moving in uniform circular motion?

Answers

Answer: An object undergoing uniform circular motion is moving

Explanation:

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Answers

Answer:

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I Hope This Helps

A straight horizontal line on a speed-time graph means the speedis constant. This means the speed is not changing over time.
How is this different from a distance-time graph?

Answers

Answer:

its devavtion is different from the distance changes process

Explanation:

Final answer:

A speed-time graph and a distance-time graph represent different aspects of motion. A horizontal line on the former indicates a constant speed (zero acceleration), while a straight, upward-diagonal line on the latter shows constant speed. A flat horizontal line on a distance-time graph shows no movement.

Explanation:

A speed-time graph and a distance-time graph each depict different aspects of motion. A horizontal line on a speed-time graph does indeed indicate constant speed or zero acceleration; the object is moving at a constant speed. However, a distance-time graph shows how the position of the object changes over time.

Let's take an example. If a car is traveling at a constant speed, on a speed-time graph, this would be represented by a horizontal line. The height of the line above the time axis represents the constant speed.

On a distance-time graph, a car moving at constant speed will be represented by a straight line with a positive slope. This is because the position of the car is continuously changing (it's covering distance), and at a constant rate. The slope of the distance-time graph gives us the speed of the car.

So, while a flat horizontal line in a speed-time graph indicates constant speed, a flat horizontal line in a distance-time graph would indicate no change in position, i.e., the object is not moving at all.