Science Project

Project...

2009-09-19T08:36:00.000-07:00

Oh yes..we have started but we have less than 24hrs to perform the project...

We manage to do it with the hypothesis, the particles will move at a faster motion if temperatures of water changes....

Apparatus needed: Microscope
Petri Dish
water of two diff temp
Any solid smaller than baby powder.

Experimental procedure:
Fill petri dish with normal temp pure water
Put solid on water.
look in microscope.
Then observe for abt 10 mins,then if particles move,then take picture or draw.

After that if successful then put the same amt of solid into the warmer water temp
Then observe
and draw or take picture.

During experiment take photos and write experiment.

We tried but its useless.The dnt move.The move as a lum sum

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Mr lau we want to change experiment can???
THere is nth smaller than powder...

we want to do smoke....Firstly,the qn ask us to prove kinetic particle theory so it does not involve anything abt temp.we just have to see the particles are in constant random motion.thats all rite????

Why do we have to have diff temp of water.the qn is to prove that my hypothesis is correct so if my hypothesis is to prove kinetic particulate theory, it means i only have to prove that the particles move at a random manner. Thus i do not have to have different temperature of water as this would mean that i am trying to prove that TEMPERATURE affects particulate theory.am i rite?

Can i change the experiment into smoke as it is impossible to do the experiment as most solid particles are to big for water molecules to make the particles move.

Is this hypothesis correct?
Molecules are in a constant,random motion.

This may be a fact but what else can the hypothesis be? This is what we would think we will ?Am i rite?

2009-08-21T19:40:00.000-07:00

A further physical observation, known as Brownian motion, suggests that matter may be
composed of tiny moving objects. When tiny dust or smoke particles are placed in a gas or
liquid and observed under a microscope, they are found to move around in a random manner.
They move first in one way, and then suddenly change direction in a random, haphazard way.

We can begin to answer this question by considering several simple observations that
suggest matter consists of particles. One of the most beautiful of these is the existence of
crystals. Under certain conditions, a solid may form into wonderful geometric shapes, and the
shape is always the same for a given substance. The simplest way to explain this phenomenon is
to imagine these crystals to be composed of a tight packing of identical "building blocks." The
shape of these individual building blocks might then be the cause of the crystal shape.

Another suggestion for the existence of basic building blocks of matter is a simple
observation of certain oil drops on water. When a small amount of such an oil is placed on
water, it will spread out until it reaches a very definite area, and then remain at this size. This
shows that the oil can be made to spread only so thin before it must break into separate drops.
One explanation is that the oil is composed of tiny identical building blocks which will spread
out until they lie just one building-block thick.

2009-07-30T07:27:00.000-07:00

does this make sense?
If coloured crystals of e.g. the highly coloured salt crystals of potassium manganate(VII) are dropped into a beaker of water and covered at room temperature. Despite the lack of mixing, convection etc. the bright purple colour of the dissolving salt slowly spreads throughout.

The same thing happens with dropping copper sulphate crystals or coffee granules into water and just leaving the mixture to stand.
When pollen grains are viewed under a microscope they appear to 'dance around' when illuminated with a light beam at 90o to the viewing direction. This is because the pollen grains show up by reflected light and 'dance' due to the millions of random hits from the fast moving water molecules. This is called 'Brownian motion' after a botanist called Brown first described the effect .At any given instant of time, the hits will not be even all round the pollen grain, so they get a greater number of hits in a random direction. comment asap.

Project.

2009-07-10T06:38:00.000-07:00

Guys,mr lau commented on MY proposal.Its on the right track.JUst keep researching and i will send as much proposal form.DONT GIVE UP.Wei xiang and ernest,get your butt of the comfy zone of yours...SEbastian,thanks and just keep reseaching...LIfe is full of challenges.

2009-06-09T21:29:00.000-07:00

Doone at 12:51pm

As what we learnt last year...When you heat a rod at the end,the particles nearest to it would gain the energy and vibrate faster...Then particles would hit against each other passing the energy from particles to another particles...After a while every particle would receive the energy and would vibrate faster...Therefore you could feel the heat on the other side of the rod...Before the particles vibrate faster,it was already vibrating...(according to what we study)

To proof:How do you know whether the particles are vibrating before it is heated and after
it is heated?
Question:How to proof it...That was what we studied but Proof it is a hard thing...

Does brownian motion makes any sense???

Brownian motion (named after the Scottish botanist Robert Brown) is the seemingly random movement of particles suspended in a fluid (i.e. a liquid or gas) or the mathematical model used to describe such random movements, often called a particle theory.
The mathematical model of Brownian motion has several real-world applications. An often quoted example is stock market fluctuations.
Brownian motion is among the simplest of the continuous-time stochastic (or random) processes, and it is a limit of both simpler and more complicated stochastic processes (see random walk and Donsker's theorem). This universality is closely related to the universality of the normal distribution. In both cases, it is often mathematical convenience rather than the accuracy of the models that motivates their use

BY:http://en.wikipedia.org/wiki/Brownian_motion

2009-06-09T07:26:00.000-07:00

Done at:10:53pm

How do you show things that you have to proof ,that are microscopic?

• We can provide a model that shows the magnification of the actual thing.

when temperature rises in water, the molecules are activated and energy is pass to one particle to another therefore it moves faster. liquid's molecules are wide apart but not as much as in gases. The more energy they'll gain the more it will start changing into gases. This is how the process of evaporation is. The water would then change into Gas state-Water Vapour

Movement of Particle...

Fill a petri dish with BB's. Tape the cover on. Place on top of a overhead and shake bacand forth. There will be little motion of the particles. this shows the motion of particles in a solid. For young children have them slowly move their fingers back and forth. This will give them the idea of the motion of solid particles

Fill a petri dis about half full with BB's. Tape the cover on and place on top of a overhead. shake the container back and forth. The particle willl move much faster than the solid as they are farther apart. For young children have them wave their hands quickly back and forth. This will give them the idea of the motion of liquid particles

place a few BB's in a petri dish Tape the cover on and place on top of a overhead. shake the container back and forth as fast as you can. The particle willl move much faster than the solid or liquid as they are farther apart. For young children have them wave their hands quickly back and forth as fast as they can move them. This will give them the idea of the motion of gas particles

2009-06-09T07:21:00.000-07:00

what is the kinetic particle theory?
•The kinetic particle theory is the theory that all matter consists of many small particles which are constantly moving or in a continual state of motion. Particle theory explains properties and behavior of materials. The degree to which the particles move is determined by the amount of energy they have and their relationship to other particles.

Done By:Syafiq Bin Rahiman(10:24Pm)

2009-06-07T05:08:00.001-07:00

http://www.metacafe.com/watch/1020131/potassium_permanganate_and_glycerin/

2009-06-07T05:03:00.001-07:00

http://jcs.biologists.org/cgi/content/full/116/8/1417/DC1