Investigations

Science Investigations 2017

Biology

Make a Salt Solution

0g / 100ml 1g / 100 ml 2g / 100ml 3g / 100ml 4g / 100ml 5g / 100ml

Make a Sugar Solution

0 0.2 mol 0.4 mol 0.6 mol 0.8 mol 1mol

1 mol of Sucrose = 342g / litre

Equal size chips

Equal soakage time

Equal solution Temperature

Chemistry

Physics

Titles of some Students own projects.

  • To investigate the factors that affect the voltage generated in a fruit
  • To determine by investigation the best kitchen towel and determine why it is
  • The effect of dissolved particles on the conduction of electricity through water
  • The effect of dissolved particles on the boiling point of water
  • To determine the factors that affect the voltage within fruit
  • To determine the factors that make a parachute fly .....

http://science.howstuffworks.com/life/cellular-microscopic/cell2.htm

http://www.rsc.org/Education/Teachers/Resources/cfb/enzymes.htm

The purpose of an enzyme in a cell is to allow the cell to carry out chemical reactions very quickly

Cytoplasm might be 70-percent water. The other 30 percent is filled with proteins called enzymes

Enzymes have an active site. This is part of the molecule that has just the right shape and functional groups to bind to one of the reacting molecules. The reacting molecule that binds to the enzyme is called the substrate.

Science Investigations 2016

Biology

Investigate and compare the quantitative effects of changing

(a) the duration of light physical exercise and

(b) the time elapsed since the exercise stopped

on the pulse rate of a person.

Chemistry

Investigate and compare the quantitative effects of changing

(a) the rhubarb surface area and

(b) the temperature of solution

on the rate of reaction (measured by noting time for decolorisation of solution)

between the oxalic acid in rhubarb and dilute potassium permanganate

solution (acidified with sulfuric acid).

Physics

Physics

Investigate and compare the quantitative effects of changing

(a) the pendulum length and

(b) the mass of the pendulum bob

on the period (time of oscillation) of a simple pendulum oscillating through a

small angle.

Mass of Pendulum =

Length of Pendulum =

Science Investigations 2014

Biology

Investigate and compare the effects of pH on the catalytic effect of the enzyme catalase, found in (a) celery and (b) animal liver, on the rate of breakdown of hydrogen peroxide.

Chemistry

Investigate and compare how the solubilities, in water, of (a) potassium chloride and (b) sodium carbonate (anhydrous) change with temperature.

Physics

Investigate and compare how the rates of flow of powdered or granulated solids through a funnel are affected by (a) the size of the solid particles and (b) any one of the funnel dimensions.

Science Investigations 2013

Biology

Compare by means of investigation the vitamin C content of a number of commercial and fresh fruit juices

Chemistry

Compare by means of investigation methanol, propan-1-ol and candle wax in terms of their effectiveness as fuels

Physics

Investigate any two factors that effect the output from a solar cell when light is shone on it.

Investigations 2012

Biology

Investigate Named seeds, chosen by you, to examine the effects of (a) placing the seeds in a fridge for a few days before sowing (b) placing the seeds in a hot press for a few days before sowing (i) the percentage of seeds that germinate, (ii) the speed of germination of the seeds

Chemistry

Investigate the effects on the amount of carbon dioxide dissolved in a fizzy drink when it is stored in (a) an open container (b) a closed container, at different conditions of (i) temperature, (ii) stirring or shaking, (iii) time elapsed

Physics

Investigate the factors that determine the rate at which heat is lost from different types of drinking cups that contain hot liquid.

Science Investigations 2011

Biology

Carry out an investigation to study the anerobic respiration of yeast with particular reference to (i) the change of temperature with time, (ii) the evolution of carbon dioxide with time and (iii) the change of density with time.

Chemistry

Carry out an investigation to study the pH changes that take place when neutralisation reactions occur between two named acids and bases

Physics

Investigate the factors that determine the force of friction between a wooden block and the surface on which it is resting.

more

Science Investigations 2010

Biology

Qualitatively investigate 2 factors that affect the uptake of water by a plant

Chemistry

Compare by the way of Investigation the abilities of different indigestion remedies to neutralise excess stomach acid

more

Physics

Investigate two factors that affect the distance taken for a toy car to stop after rolling down a ramp.

more

Science Investigations 2009

Biology

Investigate the relationship between reaction temperature and the effectiveness of action of the enzyme amylase on starch.

Chemistry

Qualitatively investigate the effectiveness of three methods of preventing an object containing iron from corrosion.

Physics

Investigate the relationship between the size of the electric current passing through a length of wire and its heating effect.

Science Investigations 2008

Biology

Florists often supply a sachet of flower food/preservative with bunches of cut flowers. Carry out an investigation to compare the effectiveness of using a commercially supplied flower food/preservative with two other household substances as additives to prolong the life of cut flowers in a container of water.

Chemistry

Marble chips react with a dilute hydrochloric acid solution. Carbon dioxide gas is released. Investigate how particle size affects the speed at which mass is lost from the reaction mixture as the gas is released.

Physics

Clothes made from certain fabrics, e.g. denim, are not suitable for hill walking or mountain climbing. Carry out an investigation to compare the thermal insulating properties of three different fabrics when they are dry and when they wet. Denim must be included as one of the three fabrics.

Science Investigations 2007

Biology

Carry out a quantitative survey of the plant species in a local habitat.

Chemistry

Investigate how the concentration of a hydrogen peroxide solution affects the speed at which it decomposes to produce oxygen gas.

Physics

Carry out an investigation of the relationship between the length of a metallic conductor (e.g. nichrome wire) and its resistance.

Science Investigations 2006

Biology

A gardener suggests that the length of time taken for marrowfat peas to germinate is decreased if they are soaked in water in advance. Carry out a quantitative investigation of this suggestion.

Chemistry

Investigate a range of plant pigments to evaluate their effectiveness as acid-base indicators.

Physics

Investigate the relationship between the temperature of a rubber squash ball and the height to which it bounces.

Filling in the booklet

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http://www.sciencequiz.net/jcscience/coursework/investigations/deptinv1.html