Investigating the effect of surface area

Add this to your results chart. The percentage increase in mass for cubes of different surface area to mass ratio can be compared, to explore the concept of how surface area to volume ratio influences water uptake.

The large marble chips Look at the experiment below: Depending on the rate of movement, this could be 10 or 30 seconds or longer. Place one where there is no noticeable air movement and the other where there is considerable air movement.

Flammable fine dust powders can be easily ignited e. Predict which of the following would react faster with the oxygen gas in air? His current articles appear on various websites. Testing the Effect of Temperature Temperature affects the rate of evaporation.

Measuring rate of water uptake by a plant shoot using a potometer

You could give students guidance on investigating a particular factor affecting the rate of transpiration, or they can choose from a list and develop their own ideas.

Investigating the effect on plant cells of immersion in solutions of different water potentials Source: Check the intensity of light reaching the plant by placing a light meter by the leaves of the shoot.

There are several different ways in which this investigation could be done. Use one that has a diameter of a 3 or 4 inches, such as a glass, and another that has a diameter of 8 to 10 inches, such as a bowl.

Effect of size on uptake by diffusion

Examples of graph data for two experiments where one of the reactants is completely used up - all reacted. The speed increase happens because smaller pieces of the same mass of solid have a greater surface area compared to larger pieces of the solid.

Use five or six values for each variable tested. This means all the other factors that affect the rate of evaporation are identical. Mix and match the different factors to ascertain which of them has the most effect on the evaporation rate. Repeat for each slide.

You must keep the following variables constant - the volume of hydrochloric acid, the concentration of the hydrochloric acid, the temperature of ALL the reactants, the mass of limestone, and TRY to keep a gentle constant stirring rate as you are noting down the time and volume of carbon dioxide gas formed.

McGraw - Hill companies. Put 2oz of water into a measuring jug then transfer it to the glass. Teaching notes Note that many plants close their stomata when the light intensity is insufficient for photosynthesis. Test this by putting water into two different containers.

If you have, you will know that it is much easier to use thinly cut wood shavings than larger sticks to get the fire going.

Biology Experiments

Leave all of the slides for at least 5 minutes to give any water movements by osmosis time to take place and equilibrium to be reached.Aim: To investigate the effect of increasing surface area on the rate of mi-centre.comound information: Hydrogen peroxide is a chemical that consists of hydrogen and oxygen.

Its chemical formula is H O. /5(1).

Investigating the Effect the Surface Area of an Organism on the Rate of Heat Loss Introduction ===== The surface area: volume ratio of an organism gets larger as the. • To investigate the effect of a change in the surface area to volume ratio on the rate of diffusion.

If the size of the jelly is large, then the rate of diffusion will be lower. If the surface area of the cell increases, then the rate of diffusion will decrease.

Experiments on Evaporation & Surface Area

The objectives of this experiment was to calculate the surface area to volume to ratio of pieces of agar and determine what effect this ratio had on the rate of diffusion. We can investigate the effect of surface area on reaction rate by looking at the reaction between marble chips and dilute hydrochloric acid An acid is a substance that forms a solution with a pH value of less than 7.

Sep 26,  · d) investigate the effect of changing surface area to volume ratio on diffusion using agar blocks of different sizes e) investigate the effects of immersing plant tissues in solutions of different water potential, using the results to estimate the water potential of the tissues.

Investigating the effect of surface area
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