Student Set – Acids, Bases, Salts – Digital Set – 31 Experiments

ABOUT THIS PRODUCT:

Function and Applications

Equipment set allowing the performance of 31 experiments about the following topics:

• Acids (16 experiments)
• Alkalis (8 experiments)
• Salts (7 experiments)

In 6 experiments you can use the Cobra SMARTsense sensors Temperature and pH instead of the classic measuring device in combination with tablets (iOS and Android) and smartphones (Android).

Benefits

• The ideal combination of classic experiments (practical competence) and digital data acquisition (media competence)
• Individual teaching structure possible: you can decide to choose the measuring instrument you want (classic or digital)
• Future-proof: preparing today the transition to the digital school
• Perfectly matched to digital science lessons with tablets and smartphones
• Faster and higher learning success: The use of digital devices increases the identification and thus increases the motivation of the student’s Complete equipment set simple execution of the experiments
• The equipment is stored in a rugged, stackable and compact box, allowing quick control of completeness (foam insert)
• Experimenting literature for pupils and teachers available: minimal preparation time
• Matched with international Curriculum: all topics are covered
• Set developed by pedagogues for introduction into inorganic chemistry

Equipment and technical data

• The equipment set consists of all necessary components for the experiments; only one for the existing gas supply suitable burner must be purchased separately
• Robust, stackable storage box with a foam insert fitting to the contained equipment
• Cobra SMARTsense Temperature: Measuring range: -40 … 120 ° C, resolution: 0.01 ° C, sampling rate: 10 Hz
• Cobra SMARTsense pH: Measuring range: 0 … 14, resolution: 0.01, sampling rate: 10 Hz

31 Experiments:

1. General safety precautions to be taken when handling acids
2. Hazardousness of concentrated sulphuric acid
3. Plant pigments as indicators
4. The effects of acids on indicators
5. The effects of acids and lyes on natural and commercial indicators
6. The effects of acids on metals
7. Acid strength
8. Preparation and properties of hydrochloric acid
9. Preparation and properties of sulphurous acid
10. PVC- a potential hydrochloric acid former
11. Sulphurous acid- environmental hazards due to the combustion of fossil fuels, acid rain
12. Oxidation of sulphurous acid
13. Preparation and properties of sulphuric acid
14. Preparation and properties of carbonic acid
15. Bronsted acids: conductivity comparison of molten and dis-solved oxalic acid
16. Bronsted acids: acidity comparison of an aqueous and an ace-tonic solution of citric acid
17. Safety precautions to be taken when handling lyes
18. Alkalis – constituents of household detergents
19. Aqueous solubility of ammonia
20. Preparation and properties of a lime water / magnesium hydroxide solution
21. Preparation and properties of sodium hydroxide solution
22. Alkali formation due to a reaction of base metals with water – qualitative determination of the conductivity of solution
23. Alkali formation due to a reaction of metal oxides with water
24. Reaction of alkalis with aluminium – alkali strength
25. Salt formation due to a reaction of acids with alkalis
26. Salt formation due to a reaction of acids with metal oxides
27. Salt formation from chemical elements reaction of zinc and iron with sulphur and iodine
28. Salt formation by precipitation reaction – qualitative determination of chlorides and sulphates
29. Hydrolysis of salts
30. Thermal decomposition of salts
31. Osmosis: a “chemical garden”

+ 1 Cobra SMARTsense pH

+ 1 Cobra SMARTsense Temperature