What Happens If You Mix Hot & Cold Water? | Water Density Experiment At Home |
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- Опубликовано: 7 апр 2022
- Is it true that water always mixes with water? Is the density of water affected by its temperature? Can you always mix hot and cold water? If you have similar questions, you've come to the right place. We're here to answer to these questions through a fun science experiment! Watch the video to find out.
Also, can you tell what would happen if we performed the same experiment with saltwater and freshwater? Let us know in the comments below.
#Shorts #hotandcoldwaterdensityexperiment #ishotwaterlessdensethencoldwater #waterdensityexperimentsforkids
Because there's more space between the molecules, cooling subtances make molecules to slow down then get slightly close together.occupes a small volume as a result increase in denisty .hot water will have less dense and Start floating on the temperature of room.cool water is more dense and will sink in the temperature of room.
BTW amazing experiment 😲
Every body in the comment section is genius
Yet Ice is less dense than hot water 😂
I imagine they will still mix, but much more slowly.
Because increasing temperature, increases the volume and density is inversely proportional to volume
But then the question would be why it increases the volume
When water is heated, the energy causes the atoms to start vibrating and thus there is spaces between them and more the space between them the less dense they become. So, as a result cold water is dense as there are less spaces between the atoms.
I hope this helps
God bless you 🌱👍🏻
Probably a better way to put it would be that heating imparts kinetic energy to the water molecules which makes them stay in motion and collide with each other more, which reduces the number of molecules per unit volume, hence less dense.
The idea is the same for other fluids like gases as well, eg., cooling nitrogen gas enough reduces the kinetic energy of the nitrogen molecules resulting in liquid nitrogen.
Just one word "Density"
It's actually a good visual lesson
We know.. from Charles law that..
V is proportional to T
And d = m/v means d is inversely proportional to v that's why
d is inversely proportional to T
Here is more clear explaination - As water is heated space between molecules of water increases therefore as a result density of hot water decreases, as densitt and temperature are inversely related. Same case happens for cold water therefore density of cold water increases. As we know less densed object (hot water) stays upward than more densed object (cold water) . Hence it causes such movement of liquid ❤
One thing that came up in my mind after watching this, "Why is this basic thing about water isn't even taught at school?" I just graduated at college in Jan. 19 yrs at school since I was 3! Never remembered teachers/professors teach something about this! School is dommed! Sometimes I think RUclips should be the next learning kind of stuff for youngsters.
Heating a substance causes molecules to speed up and spread slightly further apart, occupying a larger volume that results in a decrease in density. Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density.
When temperature increases the force of attraction between the molecules decreases and the molecules undergo random movements. The volume that they cover after being heated is larger than the volume at normal conditions. But the mass of the particles remains the same. Therefore new density(mass per unit new volume) will be less than the older density (mass per unit normal volume.)
𝙍𝙚𝙖𝙨𝙤𝙣 : 𝘾𝙝𝙖𝙧𝙡𝙚'𝙨 𝙡𝙖𝙬 says Volume is directly proportional to Absolute Temperarure. So When Temp. Increases Volume increases hence Density Decreases 😇 Coz density is Inversely proportional to Volume
As temperature increases , the molecules (particles) of the substance gain kinetic energy and start moving away which creates more inter-particle spaces which eventually means an increase in volume (keeping mass constant due to law of conservation of mass).
We know that V × d = m [ where V is volume , d is density and m is mass ].
Therefore, V × d = constant.
Hence , there is an inverse relation between volume(V) and density(d) .
This is why if temperature increases, density decreases and vice-versa.
What a great example to teach this concept!
Intermolecular forces of attraction decreases with increased temperature..
1. Density = Mass/Volume which means volume is related to density.
2. Molecules speed up as the temperature increases, this mean they will bumping into each other and moves apart by applying pressure on each other, so the result is an increasing in volume.
According to the equation, the greater volume, the less density.
But in some special case, molecules can occupies more volume at low temperature like ice.
this is because a water molecule has a property called polarization.
The faster the molecules are moving around, the more energy they bounce on each other with which counteracts the intermolecular forces of attraction. The slower the molecules are, the less energy they put towards bouncing off each other which makes the effects of intermolecular attraction stronger.
The more the molecules are attracted to each other the closer together they want to be. The closer together the molecules are, the lower the volume. Because the volume is decreasing (presumably) without a proportional decrease in mass, the density is increasing with lower temperatures.
Thanks for the information🙏🏻🙏🏻
This also explains why air conditioning is above, and not near the floor, while room heater is near the floor, and not above.
Cold air goes down, therefore placing it near the floor has absolutely no use. Hot air goes to the top.
ANS. As the matter expands with rise in temp. and thus increase in volume.
Increase in Temperature increases the intermolecular space and so the density change.
Density changes because of the activity of the molecules, molecules that are hot are very active and are constantly bumping into each other, this force repels molecules away from each other, therefore it is slightly less dense than cold water, and anything that is less dense rises on top of anything denser. This is how certain materials float, anything that is lighter is pushed away by heavier objects
Simple yet effective demonstration of how heat can change the density of the water
As when the temperature changes the density changes because their is a molecular movement in heating the molecules expand and when cooled the molecules attract with other molecule or tighten / condensed
PV = nRT, increase in temperature (T) will increase the volume (V), which results in lower density ( density = mass / volume)
See, When we heat any substance, because of the latent heat (for those who don't know, the heat required to change the state of matter is called the latent heat), the kinetic energy of the molecules increases and the interparticle force of attraction decreases. So, Interparticle space between the particles increases. As we all have studied, Density is mass/ per unit volume. So the unit volume (say 10 m³) is constant, but mass has decreased, as the particles are farther in that particular unit area. That's why, The density of hot substances is less than that of cold substances.
According to Charle's law Volume is directly proportional to temperature, so increase in temperature means increase in volume and volume is inversely proportional to density hence increase in volume means decrease in density.
Density = Mass/Volume
Volume proportional to temperature.
As temperature increases, volume also increases. But mass remains constant.
So, density decreases.
I already know that in one experiment i did in class: Mixing Food coloring in to hot and cold water,
It resulted that color spread quicker when in hot water than in cold, so that means there are less atoms in hot water rather than cold, That also means cold is denser than hot
When we heat a material or object the kinetic energy between the particles of a material also increase which result in expansion thus the volume increase, volume and density are indirectly proportionated.
Because when temperature is raised molecular movement becomes faster and they move farther from each other hence density decreases
More temperature = More energy = More atom jittering, causing the atoms to bounce each other around more, (kinda like hundreds of bouncy balls in closed room, all bouncing and hitting each other and flying in separate directions), which spaces them more, means less molecules occupy same space. Less molecules on same space, means less density.
Cold molecules still jitter around, but not as much, so they clump together a bit more, take less space, and therefore, are more dense.
And when ice forms, hydrogen bonds overcome the jittering of atoms, and form a solid crystal. But crystals have molecules spaced out more, again less atoms occupy same space, density decreases.
Because when water is heated the space between intermolecular bonds and covalent bond will expand so; it affects the mass of water and some water will also be evaporated while heating then the volume also changes.
In Cold water when we cool it the bond will be packed or contracts therefore it affects the mass.
Therefore hotwater will start flowing after sometime as it has less density than of cold water
Because hot water has more energy which results in spreading of molecules and that means there is more space between molecules in hot water than in cold water. This is why sugar or salt is easily dissolved in hot water because molecules have more space between them so sugar or salt is easily placed between them.
Density inversely proportional to volume. Cold water has closer molecules packed and thus, have lesser volume and higher density. Hot water have moleculed further away and thus more volume(cubical thermal expansion) and lesser density. Thus, the less denser O lighter material floats above them more dense or heavier material
Because particles of matter expand as they are heated hence volume increases but mass is still same
Density is inversely proportion to volume
And temperature depends upon volume according to Charles law
Excellent demonstration.. 👍👍👍
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It is because , density is dependent upon volume and volume is dependent upon temperature ; as volume is directly proportional to temperature , hence density changes with temperature
DENSITY change with TEMPERATURE because the intermolecular forces of attraction between the water molecules is less. Hence density= mass÷volume
From this equation we find that density is directly proportional to mass and inversely proportional to volume. Therefore density of water is low at high temperatures due to its large volume or space between their molecules or weak intermolecular forces... 👋👋
Temperature is measure of Average K.E of molecules or atoms ,if there is high K.E, molecules spread out and makes density lower
Good job, this video is increasibly well made and informative!
Your response is much appreciated!!😃Stay tuned to ruclips.net/p/PLKnB100k_YZkfJ-O0SbksJBJ4y4KL2SHj
This content is what i hoped for for children
In large scale oceanic currents terms this is called upwelling. For example, we always hear meteorologists talk about La Niña and El Niño, but the way they switch is regulated by the amount of warm water intruding at depth under a layer of cold water, which, thanks to this physical phenomenon, ends up rising and replacing the cold water on the surface, then that hot water evaporates, rains down and starts the cycle all over again or cools down enough to be itself replaced by more warm water.
Density changes because with increase in temperature volume changes with (v proportional T) which changes density
Density and Temperature Relationship
When more temperature increases, density reduces. When the temperature decrease, density increases.
Great video to show young people Physics in action. Would be great to show liquid mixing in ir cam, dyeing works too
Hello, happy to see that you are enjoying the series😃!! Also do not forget to watch 👉🏽ruclips.net/p/PLKnB100k_YZkfJ-O0SbksJBJ4y4KL2SHj
Mathematically density=M/volume,so from charles law we know that volume is directly proportional to temperature,hence when temperature rises, volume also rises and density is inversely proportional to volume,hence density deceases
The density changes with temperature because when we heat the water, the kinetic energy increases so this lead to increases in volume. So when the volume increases density decrease... And just the opposite happen when we cool the water...
When temperature increases, molecules expand and are more spread out and take more volume/space. This makes them less dense because molecules are far apart.
You can use this trick with a water dispenser if your need warm water. Dispense hot water first and then cold water next into your glass. If your do the reverse instead, cold first, hot next, you don't get a proper mix.
Heat energy turns into kinetic energy causing more motion amongst the water molecules which allows them to move away and away from each other, thus expanding. Hence density gets lower and lower
Graphic quality is at the next level👍
Water at 4°c actually hass the highhest density. One of the main reason for survival of aquatic life in cold places
Kids water is a magnificent occurance it can show multiple states and can behave differently according to it's temprature.
That's what I call a great teaching!
We are glad that it could help you😃. Keep watching ruclips.net/p/PLKnB100k_YZkfJ-O0SbksJBJ4y4KL2SHj
As density Is directly proportional to mass , when temperature increases , the object expands as it's particles move away from each and it's mass becomes light and as a result , density decreases.
There is also the assumption that the added food coloring is not altering the densities of the "water" by a significant amount
Staright away you notice the difference from seeing how much slower the food colouring diffuses through the cold water
Density changes with the temperature because when the temperature is hot, the speed of the particles and the particles go further from each other and also the density goes down. When the temperature is cold the speed of the particles goes down and the particles come closer and aloso the density goes high.
Density ka mtlb Hotaa hai ki koi bhi chij kitni ghni hai mtlb uske molecule kitne close hain jb temprature bdtaa hai toh molecular force weak hone lgtaa hai orr density decrease hoti hai
This is a good visual experiment!
Wow, this video is amazing!
DENSITY = MASS/VOLUME
AND VOLUME DIRECTLY PROP. TO TEMPERATURE
SO TEMP INCREASE THEN VOLUME INCREASE DENSITY DECREASE
Molecule are more compact in cold water compared to hot water. This results in the number of mass per volume (density) to be much higher/denser in cold water. Thus, cold water will sink down
Density changes with change in temperature because energy level also changes with temperature hence which lead to change in the attraction of particles and this lead to change in density of matter
Coz if you increase the temperature... the Intermolecular space increases ,which increases the volume
But we know density =mass/volume
Which means- volume ⬆️ proportional to density ⬇️
So the density decreases
Coz Density equals mass by volume and as temperature increases volume decreases (evaporation) and since density is inversely proportional to volume I.e if volume decreases density increases and vice versa
According to the ideal gas law (P = ρRT; ρ is the Greek letter rho which stands for density in this equation and is not a lowercase P), if you change the formula around, you see that temperature is inversely proportional to temperature
temperature is movement of molecules. warmer molecules move more than colder ones and therefore take up less space. they have a low volume, and since density is equal to mass/volume they have a lower density.
Make more of these please
Bcz as the density of water increases the intermolecular space decreases so the cold water has a high density as compared to hot water
According to charles law as temperature increase , volume expands and we know volume and density are inversely proportional so as temperature changes density changes
Is Charles law applicable for liquids?
However, Charles law is applicable for Ideal Gas only.
Charles law is on gases though.
When Temparature Increases,Cubical Explansion in Water tales place,Volume Increases,Mass temains constant,Density Decreases.
When we provide molecules hear energy they use this to spread farther away from each other decreasing the density.l and vice versa.
Wow that simple experiment explain a lot of things about reactors engineering
Hello Daniel, We are happy to know that😃!!! Stay Tuned and also do not forget to watch more of such amazing videos 👉🏽 ruclips.net/p/PLKnB100k_YZkfJ-O0SbksJBJ4y4KL2SHj
If anyone's wondering why ice is less dense than water at room temperature... Its due to the unusual expansion of water... Look it up.
For those who wonder how that happens, here's the equation:
PV=nRT
Volume and constants are equal, thus
P1/P2 = T1/T2
Let me know if I missed something
It's an equation for ideal gas, Liquid and Gaseous molecules Dont behave the exact same way.
This can't be applied for liquid molecules
Good Explanation 🔥🔥🔥🔥🔥🔥🔥
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The intermolecular space between the molecules of water increases and they distance themselves from each other if the water is under high temperature and density is decreased along with the increasing in such intermolecular space. Contrary with cold water.
it's because molecules of a particular substance attract and get closer to each other
Because the intermolecular force between them decrease and increase as Temperature is applied..
Thus being less dense and More density..
Molecules move more rapidly as temperature increases, bouncing more frequently into eachother. Space created
Same goes for hot/warm air and cold air. Which is why ventilators in non air conditioned spaces are placed closer to the ceiling. Warm air rises to the top and cooler air enters the premise from the windows. Even better examples are Hot air Balloons?
When a liquid or gas is heated, the molecules move faster, bump into each other, and spread apart. Because the molecules are spread apart, they take up more space. They are less dense.
Due to high temperature, molecular spaces between molecules is more which results in somewhat lesser mass and now mass and density are in direct proportion, density decreases
When temperature increases the molecules of water started expanding and some of them even evaporate . Thus the volume of hit water increases and the density decreases . 💜I purple you byjus . 💜
There should be more of this kind of shorts
Hey, We are planning for many more amazing series😃!!!! Stay tuned ruclips.net/p/PLKnB100k_YZkfJ-O0SbksJBJ4y4KL2SHj
When the water heated, the particles in the water are loosely arranged. Thus, this affects the density of the water. This is why the hot water is less dense than cold water
As temp. inc. , the same volume of water has more intermolecular spaces which tends to decrease it's density as the no. Of molecules of unit mass decreases per metre cube.
It's intermolecular space decreases therefore density decrease
Simply hot water is less denser than cold water
Though it is light in weight they mix up on flipping
It is very interesting fact tq
You should do this without putting text infront of the experiment and either play it at a regular speed or play it in a steady slow motion
Density changes based on the temperature because if the temperature is high it has more force to seperate the molecules and make them loose and hence decreasing the density and vice versa...
That's why sometimes when you jump in the lake the bottom of your feet feels extremely cold sometimes
By increasing temp. the volume of material changes while the mass remains same, therefore density decreases
Density changes with temperature because the volume is directly proportional to temperature.
Density decreases with increase in temperature
Like when water is very cold ( below 0℃ ) it becomes ice and since density of ice is greater it is a solid
And when water is very hot ( above 100℃ ) it starts getting converted into vapour and density of vapour is less. So it is a gas
Nice experiment 👍👍
Now lets take it to a slightly higher level.
Based on the method the hot and cold water mixed (as you can see from the video) by what "Process" did the heat transfer take place? (Keeping the density/weight part aside).