Έτοιμοι για δράση;
Σχετικό υλικό
Σύνδεσμοι στο διαδίκτυο
Πόροι
- Drugs testing: litmus paper, beakers, distilled water, powder samples: talc, baking soda, icing sugar, crushed paracetamol, milk powder, crushed ibuprofen, and crushed aspirin (N.B. used non-sugar coated tablets for medicines), pH data sheet giving the pH of these and other powdered substances, Check Your Drink test packs
- Smoking: sheep's lungs, bottle, water, cotton wool ball, vacuum pump
Ανθρώπινο Δυναμικό
lab technician
Προετοιμασία
Prepare materials and equipment for experiments, print pH datasheets.
Στόχοι, μηνύματα, έννοιες
Συγεκεκριμένοι στόχοι
- To chemically identify different drugs.
- To learn about the physical effects that smoking nicotine and other drugs has on the lungs.
Συγκεκριμένα μηνύματα
- Drugs have different properties which can be chemically identified using a combination of tests.
- Smoking introduces substances to the lungs which have a negative impact including reducing lung capacity and damaging the structure of the lung.
Βασικοί όροι
- colour tests
- pH
- alkaline/base
- acid
- drink spiking
- COPD
Πρακτικές και Δεξιότητες
Πρακτικές STEM
- Ανάλυση και ερμηνεία δεδομένων
- Διατύπωση ερωτημάτων και προσδιορισμός προβλημάτων
- Προετοιμασία και διεξαγωγή έρευνας
Προσωπικές δεξιότητες
-Δεξιότητες διαχείρισης
- Αξιοποίηση πόρων
Δράση
step 1
To introduce the science of drugs testing, students will watch the Festival Drugs Test video, demonstrating the use of colour tests. They can also watch the Field Drug Test Kits video to see how authorities test for drugs without sending them to a lab. Discuss the advantages of this.
step 2
Students will then model this process by testing the pH of various household powders. Working in pairs, students will mix each powder with distilled water in a beaker, and test its pH using litmus paper. They will analyse the results using a pH datasheet to try to identify what substance each powder is.
step 3
Next, students will look at a similar product to litmus paper, designed to test if a drink has been spiked with drugs. This kit can be used 'in the field', i.e. on a night out, without sending it to a lab. They will carry out the Check Your Drink test by dabbing their finger in the drink, touching the 2 test patches, and looking for a colour change (see Resources). Discuss the effects of GHB and ketamine, and the consequences of finding them in your drink.
step 4
Finally, students will look at the physical effect drugs can have on the body, by looking at how smoking affects the lungs:
- Students will dissect a sheep’s lungs to see the different parts (see Resources for demonstration).
- They will watch a video showing how smoking affects the lungs. The reduced lung capacity shown is similar to COPD, which can be caused by smoking nicotine or other drugs.
The teacher/lab technician will then demonstrate the substances breathed in from smoking one cigarette by setting up this experiment modelling the lungs.
step 5
The activity will end with a quiz to recall what was learnt and apply it to their prior knowledge of the impact of illicit drugs.