# Energy States: Solid, Liquid, Gas & More?

• B
• stoomart
In summary, energy is a property of systems and can take on different forms such as potential and kinetic energy. This energy can be harnessed to do work, such as moving objects or creating heat. It is not a substance with different phases, but rather a concept of conversion and flow.
stoomart
Does energy have different states analogous to the solid, liquid, gas, and plasma states of matter?
Would they be the same as "forms of energy" described here?
https://en.m.wikipedia.org/wiki/Forms_of_energy

Energy is not an object. It is a property of systems.

"Does red taste like banana?"
=> both "is red" and "tastes like banana" are properties of objects, it doesn't make sense to ask a question like this.

anorlunda and stoomart
mfb said:
Energy is not an object. It is a property of systems.

"Does red taste like banana?"
=> both "is red" and "tastes like banana" are properties of objects, it doesn't make sense to ask a question like this.
It makes sense to help correct a nonsensical preconceived notion.

stoomart said:
It makes sense to help correct a nonsensical preconceived notion.

As mfb said energy is a property of a system and we talk about energy in many forms. Energy is any property of a system that could be applied to do work. Energy can either be potential or kinetic.

Potential energy is energy of the configuration of the system. Some element of the system is poised to be moved by some force. A rock on the edge of a ledge has gravitational potential energy. It could fall off the ledge and do work under the force of gravity. A cocked nerf gun has elastic potential energy. The spring has been compressed and it can release that elastic energy and do work (in this case accelerating a dart). An unlit match has chemical potential energy. The ingredients are poised to react and release energy by changing their chemical bonding. Etc etc. Any force you can think of, there is a corresponding potential to do work.

Then there is kinetic energy, the energy of an object in motion. A rock flying through the air could be caught and swing a pendulum or compress a spring to do some work. The flow of a river could turn a water wheel.

Thermal energy is really just aggregate kinetic energy. The movement of all the molecules can be harnessed to do some work like pushing the piston in a steam engine.

So Energy is a widely applied concept with many forms. Your linked article lists many of the forms. It probably isn't right to think of energy as a substance that has different phases. Energy is a property of a system. However we do often talk of converting one form to another or in the case of heat we talk of energy.

stoomart
Cutter Ketch said:
Energy can either be potential or kinetic.
You nailed what I was looking for, thanks!

stoomart said:
It makes sense to help correct a nonsensical preconceived notion.
And indeed he did!

I was tired when I wrote that and apparently nodded off before I wrote the last word

in the case of heat we talk of energy flowing.

## 1. What are the main states of energy?

The main states of energy are solid, liquid, gas, and plasma.

## 2. How do these states differ from each other?

These states differ from each other in terms of the amount of energy that their particles possess and how closely packed together these particles are.

## 3. What are some examples of each state?

Examples of solid state include ice, wood, and metal. Examples of liquid state include water, oil, and milk. Examples of gas state include air, oxygen, and helium. Examples of plasma state include stars, lightning, and fluorescent lights.

## 4. Can a substance move between these states?

Yes, a substance can move between these states through the process of changing its temperature or pressure. For example, when water is heated, it can change from a solid (ice) to a liquid (water) and then to a gas (steam).

## 5. Are all substances able to exist in all states?

No, not all substances are able to exist in all states. Some substances, such as metals, can only exist in solid and liquid states, while others, such as helium, can only exist in gas and plasma states.

Replies
19
Views
15K
Replies
1
Views
4K
Replies
14
Views
3K
Replies
20
Views
1K
Replies
83
Views
6K
Replies
5
Views
1K
Replies
5
Views
2K
Replies
47
Views
5K
Replies
1
Views
2K
Replies
3
Views
1K