Class 7 Science Activity Kit

LABOXD is the first Company in India that provides authentic Science Experiments kit based on Curriculum. This is the Complete 7^th standard kit activity kit designed flawlessly to get a hands-on experience with almost all ICSE CBSE and State curriculum experiments at home. Several teachers have worked together to create this Scientastic Science Experiment Kit.

This 7^th standard kit has been boxed with Premium quality laboratory equipment. Our high-end glassware, plasticware, chemicals, & equipment are used in Research Laboratories in India.

This kit has more than 25 lab equipment and 15 reagents which are in the required quantity to undertake all experiments numerous times, Stern quality testing procedures have been taken on our products to ensure safety while doing experiments. All the Laboxd products are developed, manufactured and packaged in India.

Class 7 ICSE/CBSE/NCERT-State Syllabus experiment Kit

List of experiments for ICSE/CBSE/NCERT Class 7 Activities Covered in this Kit

1.Electromagnetic Crane—DIY Kit 1 set

2.Filtration Process –DIY Kit 1 set

3.Electric circuit with switch–DIY Kit 1 set

4.Newton Disc–DIY Kit 1 set

5.Convergent & Divergent–DIY Kit 1 set

6.Mechanism of Breathing–DIY Kit 1 set

7.Heat Transfer –DIY Kit 1 set

8.Steady hand electric game–DIY Kit 1 set

9.Stethoscope--- DIY Kit 1 set

10.Effect of saliva on starch---Test tubes, Iodine solution, Dropper

Take two test tubes. Label them ‘A’ and ‘B’. In test tube ‘A’ put one teaspoonful of boiled rice; in test tube ‘B’ keep one teaspoonful of boiled rice after chewing it for 3 to 5 minutes. Add 3–4 mL of water in both the test tubes. Now pour 2–3 drops of iodine solution in each test tube and observe. Why is there a change in colour in the test tubes? Discuss the results with your classmates and your teacher. The saliva breaks down the starch into sugars.

11.A mixture of iron, sand and common salt is provided to you. Separate the three components of this mixture.---A mixture of iron filings, sand and common salt, magnet, Filter paper, funnel, Beaker, Petri plate, glass rod, Spirit lamp, tripod stand, wire gauze

Step I. Take a little amount of the given mixture of iron fillings, sand and common salt and keep it separately. Spread rest of the mixture on a sheet of paper or in a Petri plate. Move a magnet over the surface of the mixture. Do you find that iron fillings are removed from the mixture with the help of a magnet?

Step II. Take the remaining mixture from which iron filling has been removed in a beaker. Add sufficient amount of water to cover the mixture. Stir the contents of the beaker with a spoon/glass rod for some time. Filter the content with the help of a funnel and filter paper. Record your observations

Step III. Heat the filterate obtained in step II using a heating device. Heat the content till most of the water evaporates.

Step I. Iron fillings stick to the magnet and are thus separated.

Step II. Sand remained undissolved in water and is separated by filtration.

Step III. On heating the filtrate, water is evaporated and a white coloured substance (common salt) is left at the bottom of the beaker.

12.Reaction between an acid and a base to show the process of neutralisation.---Dilute hydrochloric acid, dilute sodium hydroxide solution, phenolphthalein indicator, test tubes, Dropper, Test-tube stand.

Take about 5 mL of dilute hydrochloric acid in a test tube. . Add 1-2 drops of phenolphthalein indicator to the solution and note down if any change in colour. Take about 10 mL of dilute sodium hydroxide solution in another test tube. Take out sodium hydroxide solution with the help of a dropper and start adding this solution drop wise into the test tube containing hydrochloric acid till a change in colour is observed. With the help of another dropper, take out hydrochloric acid and start adding it drop wise into the coloured solution obtained above. Note your observations. Phenolphthalein indicator remains colourless in the acidic solution while its colour changes to pink in basic solution. It is found that on adding a base in an acid, a stage reaches when effect of acid is neutralised by base and vice-versa as indicated by colour change of indicator.

13.Identification of the acidic/basic/neutral nature of the salt solutions.

Ferric chloride, sodium acetate, sodium chloride, water, litmus paper (red and blue), dropper, test tubes, test tube stand, watch glass.

Take about 1 mL of ferric chloride solution in a watch glass. Take a piece of blue litmus paper and dip it in this solution. Do you observe any change in the colour of blue litmus paper? Similarly, dip a piece of red litmus paper in the solution and observe the change. Repeat the above steps with sodium acetate solution and sodium chloride solution, respectively. Note the observations.

Ferric chloride solution turns blue litmus paper red but it does not change the colour of red litmus paper. Sodium acetate solution turns red litmus paper blue but does not change the colour of blue litmus paper. . Sodium chloride solution does not change the colour of either red or blue litmus paper

14.Show that metallic oxides are basic in nature.

Magnesium ribbon,  red and blue litmus papers,  spirit lamp, watch glass, a pair of tongs

Take about 5 cm of magnesium ribbon. Hold magnesium ribbon with the help of a pair of tongs.  Bring the free end of magnesium ribbon near the flame of the spirit lamp and let it burn  (Do not stare at the burning magnesium). Collect the powdery ash (formed on burning of magnesium ribbon) in a watch glass.  Add small amount of distilled water to the ash and stir it.  Dip one by one blue and red litmus papers in the solution and observe the change in colour of litmus papers. There is no change in colour of blue litmus paper. The red litmus paper turns blue.

15.Chemical Changes in a reaction--Acetic acid (Vinegar), baking soda (Sodium hydrogen carbonate), Lime water, Test tubes and Delivery tube, Cork

Take about a teaspoonful of vinegar in a test tube. Add a pinch of baking soda to it. You would hear a hissing sound and see bubbles of a gas coming out. Pass this gas through freshly prepared lime water. When carbon dioxide is passed through lime water, calcium carbonate is formed, which makes lime water milky. The turning of lime water into milky is a standard test of carbon dioxide.

16.Measure the temperature of water when it is being heated, when it is boiling and when it is cooling.--A laboratory thermometer, Beaker, Tripod stand, Spirit lamp

Fill the container about half with water. Put it on a stove or some other source of heat. Measure the temperature of water every two minutes. Remember that we always use Celsius scale of temperature.

17.Effect of exhaled air on lime water--Test tube, Lime water, Straw

18.Effect of current on a compass needle--Compass, Wires, Battery, Cell holder

Take the tray from inside a discarded matchbox. Wrap an electric wire a few times around the tray. Place a small compass needle inside it. Now connect one free end of the wire to the terminal of a battery. Leave the other end free. Take another piece of wire and connect it to the other terminal of the battery. Join the free ends of two wires momentarily. The compass needle should show deflection.

19.Images formed by a concave mirror-- concave mirror, Mirror stand, Needle stand

20.Images formed by a convex mirror-- Convex mirror, Mirror stand, Needle stand

21. MAGES FORMED BY Concave LENSES-- Concave Lens, Mirror stand, Needle stand

22.IMAGES FORMED BY Convex LENSES-- Convex Lens, Mirror stand, Needle stand

PLEASE NOTE : Kits mentioned above are subject to availability, and other relevant kits will be adjusted or replaced according to the syllabus.

Warning: Not suitable for children under the age of 9. To be used under the supervision of an adult. Contains some chemicals that present a  health hazard. Read the instructions before use, Follow them as future reference. Avoid contact of chemicals with any part of the body,  especially the mouth and eyes. Keep young children and Animals away from the Experiments. Keep the experiment kit out of reach of children under the age of 9. This kit does not contain safety glasses for the adults who supervise. The gloves have in the package are manufactured in Natural Latex. Natural Latex can cause allergies.