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Bresser NATIONAL GEOGRAPHIC CHEMIE 2000 Manual
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Bresser NATIONAL GEOGRAPHIC CHEMIE 2000 Manual

Bresser NATIONAL GEOGRAPHIC CHEMIE 2000 Manual

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WARNING!
Not suitable for children under three years. To be used under the direct supervision of an adult. Choking
hazard – small parts can be ingested or inhaled. Cut or stab wounds of the skin by sharp functional edges
and points. Instructions for the parents or other responsible persons are included and must be followed.
0-3
Contains some chemicals that are classifi ed as harmful. Prevent chemicals from coming in contact with
the body. Hold small children and animals away while experimenting. Keep Experiment Set out of reach of
children under three years. Eye protection for supervising adults is not included. Keep the packaging and
manual because they contain important information!

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Summary of Contents for Bresser NATIONAL GEOGRAPHIC CHEMIE 2000

  • Page 1 WARNING! Not suitable for children under three years. To be used under the direct supervision of an adult. Choking hazard – small parts can be ingested or inhaled. Cut or stab wounds of the skin by sharp functional edges and points. Instructions for the parents or other responsible persons are included and must be followed. Contains some chemicals that are classifi...
  • Page 2 USA 911 | Australia 000 General disclaimer. Bresser GmbH has used their best endeavors to ensure that the Information in this book is correct and current at the time of publication but takes no responsibility for any error, omission or defect therein.
  • Page 3 Warranty and warranty term extension The warranty term is two years from the date of purchase. Please keep your proof of purchase. Register at www.bresser.de/warranty and ll out a brief questionnaire to get your warranty term extended to fi ve years. Registration must be completed within three months of purchase (date of receipt) to validate the warranty.
  • Page 4 INDEX number Chemical substance Chemical formula CAS number Hydrogen peroxide 3% (1 mol/l) 7722-84-21 008-003-00-9 Liquid glycerine (80%) 56-81-5 215-739-6 Litmus red (tournesol) powder 1393-92-6 MgSO Magnesium sulphate 7487-88-9 Potassium alum AlKO . 12H 7784-24-9 NaHCO Sodium bicarbonate 144-55-8 011-005-00-2 Sodium carbonate 497-19-8 Warning...
  • Page 5 Disposal of used chemicals When you’re disposing chemical substances, please refer to national and/or local regulations. Do not throw chemicals into sewers and garbage. For more details, please refer to a competent authority. For disposal of packaging, make use of speci c collection points. Advice for supervising adults - Read and follow these instructions, the safety rules and the rst aid information, and keep them for reference.
  • Page 6 1. Experiments Stir the mixture with the wooden spatula. The reagents and materials included in this kit are labelled Note: with this symbol Scientist, always put your protective gloves, goggles and lab coat on before conducting any experiment. Can you dissolve all the sugar? What type of mixture is this? WARNING.
  • Page 7 Place the lter in the funnel. Experiment 3 Saturated solution – water with sugar Using the Pasteur pipette, add some drops of water allowing for paper lter to more easily attach to the funnel. What you will need: Sugar • Water •...
  • Page 8 Experiment 6 Experiment 7 Homemade fi lter Processes of separating mixtures – Decanting What you will need: What you will need: Plastic bottle Water • • Cotton wool Soil or sand • • • Sand • 2 Large measuring cups (100 ml) Small stones Wooden stick •...
  • Page 9 Using the Pasteur pipette, add immediately a drop of food co- Steps: With a Pasteur pipette, add some drops of blue food colouring to louring to each cup. Ensure that you add the exact same number of the tracing paper. drops to both cups and don’t stir them.
  • Page 10 Add a drop of food colouring to each cup. Do not stir the Using the Pasteur pipette, pour two drops of colouring into the cup mixture. of water. Stir the mixture using the wooden spatula. Pour the water containing the colouring into the bottle. The water What do you observe? should oat atop the honey.
  • Page 11 Remove the paper strips with the tweezers and place them over di erent paper napkins. Choose a food colouring and pour a drop of it over each paper strip. Water Honey WARNING. When you have fi nished, throw away any food used during the experiment.
  • Page 12 Explanation: Density relates the mass of a material with the Less foam is formed in the test tube with magnesium sulphate. volume it occupies. Substances less dense than Magnesium sulphate is a compound that hardens water. This is why water will oat on it. Denser substances than water you cannot form a lot of foam.
  • Page 13 Put 1 tablespoon of glycerine in the container. Try putting your nger inside the bubble too. Why are these bubbles so resistant? Dip the hoop in the mixture and slowly remove it. Wait a few seconds and then blow against it. Explanation: You must be able to pass the scissors through the bubble layer without How many soap bubbles can you make with one blow?
  • Page 14 In this experiment you can look at the chemistry behind a shampoo. Put some drops of food colouring in the previous solution if you’d like. The basic composition of a shampoo must include surfactants, preservatives, fragrances and a pH regulator. Here, the surfactants are In a large measuring cup, prepare a solution of water and sodium the soap scrapes, the fragrance is the camomile tea and the glycerine bicarbonate, with about 25 ml of water and 2 spoons of sodium bicar-...
  • Page 15 Compare the colour of each test strip with the pH scale! Experiment 22 Test an acid on indicator paper Neutral Acids Alkalis What you will need: pH test strips • Plastic spatula • Tweezers • Pasteur pipette • Increasing acidity Increasing alkalinity Lemon juice •...
  • Page 16 Use another pH test strip in the resulting solution. Observe and Experiment 24 take notes. Acids and alkalis What you will need: What happened? 2 Small measuring cups (25 ml) • Plastic spatula • Pasteur pipettes • • Tweezers pH test strips •...
  • Page 17 Stir it with the wooden spoon for some minutes, until the water Experiment 27 gets purple. Test your natural pH indicator with an alkali Take o the small parts of red cabbage and save this indicator in a container with lid, so that you may use it in the following experiments. What you will need: Natural pH indicator (Experiment 25) •...
  • Page 18 Steps: Steps: Pour a bit of lemon juice into the cup. Use pH test strips included in your kit or an indicator you’ve made. Take one of your homemade indicator paper and put it at the table. Put a drop of water on the indicator paper. Add, with a Pasteur pipette, 2 drops of lemon juice to a paper square indicator.
  • Page 19 Take note of the colours you see. Steps: Collect the rose’s petals and cut them in small pieces. Now you can use this indicator to test the pH of other substances. Place them in one of the cups. Explanation: Add hot water to the cup. Citric acid (of lemon juice) is an acid, sodium carbonate is a base and water is a substance with neutral pH.
  • Page 20 In a 25 ml cup, add one teaspoon of sodium bicarbonate to 15 ml Experiment 36 of water. Stir it with the wooden spatula until it is dissolved. Salt has pH 7 in water Fill in a Pasteur pipette with the sodium carbonate solution. What you will need: Put the content of the Pasteur pipette, immediately in the 100 Large measuring cup (100 ml)
  • Page 21 The next day, gently transfer the solution (that should be dark Experiment 40 blue) to the ask for litmus (tournesol) solution. If there is any black residue in the test tube, work to prevent it from entering the solution. Magic can Fill a Pasteur pipette halfway and add the ethanol to the ask.
  • Page 22 Wash the can with water, in and out, to remove the copper (II) Prepare a copper (II) sulphate solution (2.5 g in 10 ml of water) and sulphate solution. add half teaspoon of salt. Now you can pick up the can and rip it as if it was a sheet of paper, Pour this solution into a Petri dish.
  • Page 23 WARNING. When you have fi nished, throw away any food used during the experiment. Experiment 42 Coin cleaning Explanation: Over time, copper coins become dark. This happens because the copper from coins is oxidised by atmospheric elements, particularly What you will need: oxygen.
  • Page 24 Wash the eggshell halves with tap water to remove the rest of the eggs content. Using a paintbrush, paint the eggshell with the egg white (the one you collected in step 2). The egg white will work as glue. Note: Sprinkle the eggshell with potassium alum.
  • Page 25 Steps: Experiment 46 In the cup, mix 10 g of magnesium sulphate in 10 ml of hot water. Stir Stalagmites and stalactites for at least one minute. Create a saturated solution. Add a little bit of food colouring if you want coloured crystals. What you will need: Hot water •...
  • Page 26 After this period, remove the liquid from the cup and observe what The drawing will appear with small blue crystals. remains at the bottom of the cup. Using the wooden spatula, remove the crystals from the bottom of the cup. Explanation: Choose one of the crystals and save it.
  • Page 27 Experiment 51 Experiment 52 Sugar crystals Looking for starch Attention: Ask an adult for help. Attention: Ask an adult for help. Starch (corn our) is a substance that can be found in plants and that gives us energy. It is a compound made of carbon (C), oxygen (O) and hydrogen (H) atoms.
  • Page 28 Steps: Experiment 53 Looking for starch II Attention: Ask an adult for help. In a pan, mix a spoon of corn our for each cup of water. Stir it, until Attention: Ask an adult for help. it’s boiling and transparent. What you will need: Remove the pan from the heat source.
  • Page 29 Experiment 56 Experiment 57 The action of saliva Homemade play dough Attention: Ask an adult for help. What you will need: Food colouring • What you will need: Tablespoon • 2 Test tubes with lid • Teaspoon • Water • •...
  • Page 30 There are several types of chemical bonds; these bonds join together the atoms of a given molecule. Chemical bonding can be covalent, ionic or metal. Covalent bondings are formed by sharing electrons and can be single (or simple) bonds (1 pair of electrons establish the bonding), double bonds (2 pairs of electrons establish the bonding) and triple bonds (3 pairs of electrons establish the bonding).
  • Page 31 The greenhouse e ect happens when the gases from Experiment 60 the terrestrial atmosphere absorb radiation emitted Nitrogen (N by its surface. As so, part of the heat released from Earth, isn’t released into space, accumulating and increasing the global temperature of the planet. Nitrogen is the most abundant gas in the atmosphere of our planet (more than 70%).
  • Page 32 Image 16. Methane molecule model. Hydrogen is represented in white and carbon in black. Methane molecule model. Hydrogen is represented in white and carbon in black. Image 19. Representation of how you must make your ethane molecule. Experiment 64 Propane (C Propane is an alkane that consists of three carbon atoms and eight hydrogen atoms.
  • Page 33 Experiment 65 Experiment 66 Butane (C Cyclohexane (C Butane is a colourless, unscented and fl ammable gas, which comes Cyclohexane is a colourless and fl ammable liquid. Its odour from oil. is similar to the one of detergents. This molecule is a cyclic hydrocarbon saturated, in other words, a cyclic alkane.
  • Page 34 Experiment 67 Experiment 68 Benzene (C Ammonia (NH Benzene is a chemical liquid, at room temperature, fl ammable and At room temperature, ammonia is a toxic colourless gas. It’s a with a sweet odour. It evaporates fast when exposed to air. dangerous compound in case of inhalation and has a specifi...
  • Page 35 This compound is also quite volatile and fl ammable. Contrarily to – only available online! ethanol, which is used in common beverages, isopropyl alcohol can’t be consumed. http://www.bresser.de/ Isopropyl alcohol is used as a chemical solvent and for example, download/9130600 in disinfecting and cleaning solutions.
  • Page 36 All rights reserved. NATIONAL GEOGRAPHIC and Yellow Border Design are trademarks of the National Geographic Society, used under license. Bresser GmbH Gutenbergstr. 2 · DE-46414 Rhede www.bresser.de · info@bresser.de Irrtümer und technische Änderungen vorbehalten. ANL9130600GB0815NG Errors and technical changes reserved.

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National geographic chemistry 2000