BIG LITTLE SCIENCE CHEMISTRY SHOW: Planning amounts for 3 shows, plus 3 trial runs 1. LUMINOL “LIGHT PIPE” Equipment: big stand with clamps and tubing 2 L beaker big glass funnel small step–ladder Solutions: 3–Bottle A (Dilute 4.0 g Na2CO3 to 500 mL, add 0.2 g Luminol and stir to dissolve. Add 24.0 g NaHCO3 […]
FROM THE CSIRO LAB AT SCITECH: There is a program in the CSIRO Lab at Scitech called PLANTECH. Another sterile technique of tissue culture, carried out in laminar flow cabinets, is being offered for high schools, called an embryo rescue. It is also used in conservation biotechnology at Kings Park, plus a huge range of […]
The original prac is in Biological Science, The Web of Life Teacher’s Guide Part 2, Exercise 10b.4 1. Approx 25g agar (increase from 18g) 4g NaOH Dissolve NaOH in 100ml water. Heat 900ml water in a beaker almost to boiling Add agar and continue boiling while stirring till dissolved. Allow to cool until temperature drops […]
By Ian Sullivan, Noble Park High School. A stimulating demo, good introduction to the topic Introduction to Chemistry. Technicians notes: Bottle contains 500ml of fresh 1M H2SO4 with 0.5g of anhydrous iron(III) chloride FeCl3. Solution in the bottle is nearly colourless. Use a wine bottle and appropriate glasses rather than a flask and beakers. Practise, […]
Question: Does anyone have any tips on how to make the lemon battery work? We are using Jacaranda Science Book 2, page 231. Answer: For best results with a lemon battery use BROAD pieces of zinc and copper (1-2cm wide, roughly polished with sandpaper). Use a high impedance meter (any digital multimeter) to monitor the […]
This comes from Queensland Science 2, Working Scientifically, Detecting Ions, Experiment 1.5. The method is an alternative to the one in the book, which does not work: Equipment: Filter paper Power pack Bathroom tile (eg 15x15cm) covered with aluminium foil Connecting leads and crocodile clips 0.5M potassium iodide 0.5M sodium thiosulfate starch solution phenolphthalein indicator. […]
Introduction: This demo shows a chemical reaction which can be used to show how concentration affects reaction rates. Students will observe and describe chemical and physical change. OBJECTIVE Differentiate between common chemical and physical changes. Analyse factors that influence chemical and physical change. INTENDED LEARNING OUTCOMES 1. Make observations and measurements 2. Collect and record […]
Re the experiment in Lower Secondary Science, Can you make an Indicator?: Red cabbage, red roses, onion skin and black tea work but flowers from your schools garden make great indicators. The following flowers work very well: Pink Camellia, flame tree, Grevillea Robyn Gordon, sour grass, nasturtium- orange flower form, white (with purple back) daisy, […]
THIS EXPERIMENT MUST BE CARRIED OUT IN HYGIENIC CONDITIONS IN THE HOME ECONOMICS DEPARTMENT (APPLIED CONSUMER SCIENCE DEPARTMENT). USE FRESH INGREDIENTS FROM THE SUPERMARKET, NOT MATERIAL THAT HAS BEEN STORED IN CHEMICAL CUPBOARDS. USE APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT WHEN USING LIQUID NITROGEN 1. You don’t need a strictly measured recipe but here’s a guideline: Pour […]
Here is an experiment for demonstrating radioactive decay and half-life. 1.Get a packet of M&Ms (they only have an M on one side) 2.Count the M&Ms. 3.Place them in a beaker, shake and pour out onto a plate. 4.Remove the M&Ms that land face-up. These have decayed and need to be eaten immediately. 5.Count the […]