more on ice experiment at home

some notes n sketches from home experiment!
follow the link! :-)

burn experiment!

beat it ! experiment

experiment on ice at uni.

experiments i've done at uni on past Thursday
- burn the ice ( which i do it more at home here.)



- try put on the ice as a ring ;p


- make some ice sculpture and find that after a while the ice will stick to each other

- ice on ice experiment, interlock each ice with smaller ice. the result is that the ice which is in another ice takes longer to melt, so the middle part of it is very thin.

water workshop :)

workshop on Monday :-)
group member : jik kanom mint newsuay!
at first, we tried to observe the effect of light on water when there is reflections under the water.
so we make a paper platform as a basement but it doesnt work with the light cos paper absorb water so quick and it doesnt shine at all.
so we make this water stepping container.. it shows how water runs through each platform as one mass.. its like a waterfall.

cloudy fog in ice cube..

i've found the reason why ice cube has cloudy fog in it !!


Cloudy ice cubes result when water is frozen quickly, or ice is allowed to form on the surface of the water. When water is cooled to its freezing point, and ice starts to form, dissolved gases can no longer stay in solution and come out as microscopic bubbles. However, as ice floats in water, once there is enough ice to form a layer on the surface, the ice layer traps all bubbles within the ice cube. Ice-makers use a flowing source of water to make ice with cooling elements at the bottom, allowing the bubbles to be washed away from the top as the cube grows. An interesting characteristic of commercially made ice cubes is that they are completely clear, lacking the clouding found in the center of domestically made ice cubes.

↑ clear ice cube


↑ cloudy ice cube

ICE beating !!!

i study in crack of an ice beat in mortar!

after i beat it.. it start to crack at the edge first
then crack into big pieces

i found that the inner mass of the ice (white color) is softer than the outer mass (clear color)
it was easier to beat! as the ice cube gets smaller, it become liquid.

here is the picture of the mass of ice, u can see that inside is white, that's the part that easy to break.

BURN it!

i tried burning the ice cube from one side using candle.
the flame and heat created melting trace on the ice in V-shape.

after 3minutes, the ice became c-shape (seeing from top)

its melts this way...

it took 10 mins to melt completely whole cube.
which is 2times faster than leaving it still in room temperature.

essay

WATER

According to Oxford advanced learner’s dictionary, water is a liquid without color, smell or taste that falls as rain, is in lakes, rivers and seas, and is used for drinking, washing, etc. For this third module for the Design II class about water, I do some experiments on water, focus on the transformation of water to gas, ice to water and vice versa.
The first experiment I’ve done is about water evaporation. I put the pot on the oven with low heat then pour water in, the water evaporate quickly as usual. But second time, I wait a little longer and increase the heat before pour the water in, this time water didn’t evaporate, but it became bubbles rolling on the pot surface. This phenomenon can be explained as the Leidenfrost effect, it is a phenomenon in which a liquid, in near contact with a mass significantly hotter than the liquid's boiling point, produces an insulating vapor layer which keeps that liquid from boiling rapidly and takes longer to evaporate.
My second experiment is about ice melting to water. This experiment has nothing complicated at all; I just put an ice on a plate still and timing it until it completely melts to water. I take picture of the ice every 5 minutes to see how the mass changes, nothing interesting. In room temperature, the ice takes 23 minutes to melt completely whole cube. It’s amazed me only a bit that I first taught it would melt faster that this as the weather is very hot! I also try putting ice into the heated pot to see how quick it melts, the result is very faster but it produce lots of fog coming out from the ice.
Another experiment is about water transforms to ice. Normally, water transforms to ice when the temperature is at 0°C, called freezing point. But there is an exception if the water is not pure water, like in my experiment, I used soda, the water will not freeze at that temperature and it will still be liquid. Then if you make only a little stimulation to it, it will freeze immediately. This phenomenon is called “supercooling”. In the supercooled state, it remains a liquid despite being cooled well below its freezing point. In my experiment, I first put normal soda into freezer at
-15°C and leave it like that without any disturbance for 5hours. Then I put it out slowly before pulling the lid out, at this moment the stimulation when I open the lid triggered the molecule of the soda which made it freeze immediately. This will happen only when the soda was place in the right temperature; long enough to make it very cold. Moreover, the very important point is that to leave it with out any disturbance, as only a little shake can spoil the phenomenon.
Apart from these experiments, I also try to play with the ice and salt, to see how salt effect on ice. I found that salt first stick on the ice cube then as the ice melt, I see the texture made by salt. Salt eroded ice cube into special texture and also boost the melting, ice melt better with salt added.
I have learned a lot from the experiments I’ve done so far, some of them I never knew before, for example; supercooling. Common element in our lives like water can be transformed by many surprising way. I think all the information and ideas I got from the experiments can be my inspiration in further assignment.

3nd experiment:Soda supercooling !

i dis this experiment twice to make the best result.
first time it didn't come out so well

second time it really works! :D

In the supercooled state, it remains a liquid despite being cooled well below its freezing point. In my experiment, I first put normal soda into freezer at
-15°C and leave it like that without any disturbance for 5hours. Then I put it out slowly before pulling the lid out, at this moment the stimulation when I open the lid triggered the molecule of the soda which made it freeze immediately

Salt & ice !

Salt eroded ice cube into special texture and also boost the melting, ice melt better with salt added !

2nd experiment:ice melting

This experiment has nothing complicated at all; I just put an ice on a plate still and timing it until it completely melts to water. I take picture of the ice every 5 minutes to see how the mass changes, nothing interesting. In room temperature, the ice takes 23 minutes to melt completely whole cube.

I also try putting ice into the heated pot to see how quick it melts, the result is very faster but it produce lots of fog coming out from the ice.

1st experiment: water evaporation

The first experiment I’ve done is about water evaporation. I put the pot on the oven with low heat then pour water in, the water evaporate quickly as usual. But second time, I wait a little longer and increase the heat before pour the water in, this time water didn’t evaporate, but it became bubbles rolling on the pot surface.

*This phenomenon can be explained as the Leidenfrost effect, it is a phenomenon in which a liquid, in near contact with a mass significantly hotter than the liquid's boiling point, produces an insulating vapor layer which keeps that liquid from boiling rapidly and takes longer to evaporate.

WATER!

Third module for the Design II class
; water is a liquid without color, smell or taste that falls as rain, is in lakes, rivers and seas, and is used for drinking, washing etc.
chemical formula = H₂O