• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5

# Investigate what affects the speed at which the jelly will dissolve in water. This investigation will be using the theories we have covered on the rates of reaction and the collison theory.

Extracts from this document...

Introduction

The investigation I have to do is I have to investigate what affects the speed at which the jelly will dissolve in water. This investigation will be using the theories we have covered on the rates of reaction and the collison theory. I am going to try to get the jelly to dissolve quicker by increasing the surface area. I predit that when increasing the surface area of some jelly, I think each time I change the surface area then the time the jelly dissolves will be increased. I think this because each piece of the jelly I will be using will be small, so in that case there will be less to dissolve, as I think increasing the surface area in any investigation will speed up a reaction. So the smaller the pieces of jelly, the quicker my groups reaction will happen, as more collisions. As in the collision theory, it says that when increasing a surface area more collissions will happen. ...read more.

Middle

4. We will start the stopwatch at this stage while another member of the group is stirring the jelly. 5. When the jelly has then dissappered we will stop the stopwatch and record our results in a table. We will then repeat all of these steps for the next lot of jelly. Fair Test? Yes me and the group I am in will be doing all we can to make the experiment a fair test. The only thing we will be changing throughout this experiment is the surface area of the jelly, as the temperature of the water will always be at 60oc. We will always be adding 100ml of water to the beaker to be heated. All the jelly cubes will weigh 9 gram, so the starting mass of jelly will stay the same. It is important to make this a fair test because if we don't then our results will not be reliable. ...read more.

Conclusion

Our investigation was quite fair, but I think next time if we do the experiment again there is a few things I would change to make it a fairer test and these things would be: * Making sure all the jelly pieces are the correct size * Checking the temperature is spot on each time. Overall I am happy with my results as they prove that the predication I made was correct. You can refer to the collision theory when looking at my results, as the collision theory explains that when a surface area is increased more collisions happen which speeds up a reaction and this is exactly what happened in my experiment. The only thing that did surprise me is that on Attempt two using 2 half's took longer to dissolve than on the first attempt, this also crops up in many other places. I think this is because as I referred to before the pieces of jelly were not all the same size. I feel this could of altered the investigation as at time there would have been big and small pieces of jelly to dissolve. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Green Plants as Organisms section.

## Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Related GCSE Green Plants as Organisms essays

1. ## An investigation into the abundance of fresh water black fly larvae, Simuliidae, between pools ...

4 star(s)

In pools the slow current means a large deposition of silt, the silt can settle in the still water and coat the bottom of the pool, with a layer of silt on the bottom of the pool the black fly larvae, Simuliidae, cannot attach itself to a stone.

2. ## Photosynthesis Investigation

the leaf on to the tile flat - Now using the syringe put some iodine over all parts of the leaf after a while turn the leaf and put some iodine on that side as well - After few minutes hold the leaf on the hand facing the light and

1. ## Factors Affecting Infiltration Rates

The amount of decayed organic matter found at the soil surface can also enhance infiltration. Organic matter is generally more porous than mineral soil particles and can hold much greater quantities of water. The rate of infiltration normally declines rapidly during the early part of a rainstorm event and reaches a constant value after several hours of rainfall.

2. ## Yeast Investigation

Although this diagram shows that the enzyme is breaking up the reactant other enzymes are specifically made to make the reactants bigger and not smaller. This diagram below shows an enzyme once it has been denatured. It shows how the enzyme can not properly create the reaction inside of the active site anymore.

1. ## INVESTIGATING HOW TEMPERATURE AFFECTS THE

After measuring 20cmand checking that the water has fallen to the required temperature I will transfer it into the test tube. I will again use forceps to drop the beetroot into water and start timing as soon as the beetroot is in.

The positioning I resolved by putting both the water bat and the room temperature beaker nearby each other where I believe that in this way both will receive equal amount of sunlight but then again like problem number 1 I am not measuring the amount of sunlight received but the temperature.

1. ## An Investigation into Species Diversity with distance along a Pingo.

These will be averaged and the T-test will be used on them to see whether there is a significant difference in light levels down the pingo. iii) Water moisture 1. Soil samples will be taken at each zone. 2. These will be taken back to the lab and weighed 3.

2. ## Photosynthesis Investigation

If all other aspects of photosynthesis (carbon dioxide, water chlorophyll) then light intensity is in control of the reaction. As the light intensity increases chlorophyll can trap enough light needed to form glucose quicker. Therefore the higher the light intensity the quicker that chlorophyll can trap sunlight so the rate of photosynthesis is quicker also.

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to