burning a candle
visitors this year: 108 Burning a candle As a candle burns oxygen is used and heat and water are produced. A few sensors can be used to monitor this process – including a light...
visitors this year: 108 Burning a candle As a candle burns oxygen is used and heat and water are produced. A few sensors can be used to monitor this process – including a light...
visitors this year: 320 Thermometric titration As acid reacts with alkali the pH changes and heat is evolved. This heat of neutralisation can be easily monitored using sensors – to produce a graph of...
visitors this year: 93 Acid-base titration As acid drains into alkali the pH changes. This can be monitored using a pH sensor to instantly produce a graph of pH against volume. The volume of...
visitors this year: 105 Rates: marble and acid Apparatus Clamps, bosses, & stands, marble pieces (large, medium and small sizes), 1M hydrochloric acid HCl, flask, bung, delivery tube, a good gas syringe. Interface, position...
visitors this year: 647 Rates: Thiosulfate and acid Sodium thiosulfate and acid react to form a precipitate. The light sensor can be used, like a colorimeter, to monitor the rate of the reaction. In...
visitors this year: 152 Exothermic reactions A temperature sensor can collect information about the heat generated when lime is mixed with water. Exothermic reactions are used in a glove heating pack. The proportions of...
visitors this year: 117 Heat of reaction As acid reacts with alkali, heat is evolved. This is the heat of neutralisation. This can be easily monitored using a temperature sensor. In this experiment the...
visitors this year: 1,187 The First World War, that began in 1914, put chemists to work. Their chemicals could harm as well as heal … but on balance the outcome was … horrific. As...
Podcast: Play in new window
more: Spotify | RSS | subscribe options
visitors this year: 117
visitors this year: 103
visitors this year: 235
visitors this year: 59
visitors this year: 121
visitors this year: 48
visitors this year: 47 As food burns it releases energy. This energy can be used to heat up water. If you know how much water you used, and how hot it gets, you can...
visitors this year: 795 Fats, such as the fats in milk, need to be digested by your body. They are broken down into fatty acids and glycerol by an enzyme called lipase. You can...
visitors this year: 172 Measuring the appearance of cloudy sulfur when we mix acid and sodium thiosulfate is a popular science teaching activity. We can change the temperature or concentration of the reagents, and...
visitors this year: 342 If you were a chemical manufacturer you would certainly be interested in finding ways to increase the rate of production. One way is to do the reaction at a higher...
visitors this year: 134 Hydrochloric acid and marble (CaCO3) react to form carbon dioxide gas. The gas can be captured and measured using a gas syringe. A position sensor can be attached to the...
visitors this year: 59 Sometimes you need to graph several variables one after the other – for example, in this weather database, we plotted the daily maximum temperature against time. For clarity, we plotted...
visitors this year: 45 Datasets (files) like the one below are useful in science. There is data to analyse by drawing graphs. The file below is in a ‘CSV’ format. Open it in your spreadsheet...
visitors this year: 670 Plaster of Paris is white powder you mix with water and pour into a mould. You can make models with it while hospitals use it on broken limbs. When you...
visitors this year: 4,984 I expect that when something cools, it will get cooler in a plodding kind of way. That’s true, but when something changes state, the cooling is not so steady.The graph...
visitors this year: 116 The label on my milk bottle tells me how long the milk will ‘last’ at different temperatures. What do they measure to make this assessment? Is it the pH? I summoned...
handling data from experiments / primary school science
by Roger · Published Oct 2018 · Last modified Apr 2019
visitors this year: 24 Scientists need to measure and communicate, to handle information and model ideas. In essence, they need to process information. Young scientists have similar needs. When they write, draw graphs, do...
visitors this year: 433 what affects the rate of reaction? A chemical reaction can be made to go fast or slow. In this activity you will try to measure how a chemical reaction is...
visitors this year: 60 When quicklime is mixed with water an exothermic reaction takes place. A temperature sensor can collect information about the heat generated over time. Other things being equal, this reaction might...
visitors this year: 202 As acid drains into alkali the pH changes. This can be monitored using a pH sensor to produce an instant graph of pH against volume. The easy way of doing...
visitors this year: 88 As a candle burns oxygen is used and heat and water are produced. A few sensors can be used to monitor this process. A light sensor indicates when the candle...
visitors this year: 1,094 A podcast about the science of food crops. The growing world population leads to a demand to farm the land several times more effectively than we used to. But growing...
Podcast: Play in new window
more: Spotify | RSS | subscribe options
visitors this year: 420 Hear about measuring the properties of materials that are not just solids or liquids or gases but are all three in one. The soil under your feet is one such material – it is...
Podcast: Play in new window
more: Spotify | RSS | subscribe options
visitors this year: 454 In this podcast, a Cambridge chemist talks about drug discovery. Sean McKenna, a scientist in the pharmaceutical industry, describes techniques that take the guesswork out of making pills. We think...
Podcast: Play in new window
more: Spotify | RSS | subscribe options
visitors this year: 290 Fracking was once uneconomic, but today’s energy crisis has led to new options. As the government has issued licences to drill in the UK, there have been protests in the...
Podcast: Play in new window
more: Spotify | RSS | subscribe options
visitors this year: 466 We visit the Centre for Atmospheric Science in Cambridge University and speak to Professor John Pyle about modelling the lower atmosphere using supercomputers. Follow-up link: Centre for Atmospheric Science atm.ch.cam.ac.uk...
Podcast: Play in new window
more: Spotify | RSS | subscribe options
visitors this year: 350 The Cambridge Science Centre is a really useful educational attraction in the city centre. Founder Dr Chris Lennard tells Roger Frost what the centre aims to do for science education. The Cambridge Science Centre opened in...
Podcast: Play in new window
more: Spotify | RSS | subscribe options
visitors this year: 299 We hear how British Antarctic Survey scientists drill ice to discover how the world has changed over thousands of years. Dr. Robert Mulvaney of the British Antarctic Survey in Cambridge talks to...
Podcast: Play in new window
more: Spotify | RSS | subscribe options
Roger Frost has been writing about technology since 1988 and this web includes articles; radio interviews with scientists and tutorials to use technology at home and the classroom.
rogerfrost.com is a compendium of ideas for using technology with sciencey questions in mind. Started in 1995 to offer ideas to school science teachers, Roger Frost expanded the coverage to home automation, lifestyle topics, handy gadgets and smarthome sensors to measure, or understand, what’s going on around him.
I’d encourage use of the search box and keywords to find content. We’re totally spam and advert free. Please enjoy and share this content.
To say hi – there’s a reply button on each page that goes only to me in Cambridge, UK. Or send a message on this page.
HOME AUTOMATION: