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Read our policy. Explore the effect that concentration and temperature have on the reaction time of chemicals with this experiment in kinetics. In this experiment, two colourless solutions are mixed to make a solution which becomes dark blue.
Changing the concentration or temperature of the solutions changes the time required for the blue colour to develop. This practical is part of our Classic chemistry experiments collection. Help your students understand the synergy between rate and equilibrium and answer exam questions successfully. Complete a life-cycle assessment for three period products: tampons, period pads and menstrual cups.
Ask learners to use their judgement to recommend the product with the least environmental impact. Site powered by Webvision Cloud. Skip to main content Skip to navigation. Classic chemistry experiments: the effect of concentration and temperature on reaction rate.
No comments. Download all. Additional information This practical is part of our Classic chemistry experiments collection. Level years years. What is an inelastic collision? How do we solve problems and do calculations involving momentum? Sub-index for this page. All moving objects have what we call momentum. The bigger the mass of a moving object, the bigger its moment. The momentum of an object is directly proportional to its velocity AND its mass.
Momentum p is a vector quantity , it has both size and direction. Example of simple calculations using the formula for momentum. Here we will consider collisions between two objects in a closed system.
Here a closed system here means no other external forces affect the situation e. If an external force like friction is involved, total momentum cannot be conserved. The total momentum of an event in a closed system is the same before and after the event e. This is called the ' Law of Conservation of Momentum ' and you can use it do lots of calculations!
In other words the large object formed by collision has the momentum equal to the two momentums of the colliding objects added together. Momentum is conserved for both elastic and inelastic collisions. For a perfect elastic collision, no kinetic energy is lost - kinetic energy conserved. In an elastic collision, the total energy in the kinetic energy stores of the colliding objects is the same as before and after the collision.
For an inelastic collision , kinetic energy is not conserved - kinetic energy is lost in some form e. In an inelastic collision, some of the moving objects kinetic energy stores are lost and transferred to other energy stores of the objects themselves or the environment.
This is because the atoms are bashed together increasing their potential energy store compressed for a fraction of a second. They 'relax' to their normal state by losing the energy as heat thermal energy or sound. For inelastic collisions you can solve a variety of problems using the principle of 'conservation of momentum'. The above examples involve collision but there are all sorts of momentum situations e. When a gun is fired the bullet goes in the forward direction positive momentum , but the gun recoils in the complete opposite direction negative momentum.
From Newton's 3rd law, you get an equal and opposite force reaction. The bullet goes one way and the gun the other way from the force of the explosion. Before a rocket is fired it has zero velocity and zero momentum. When the rocket's propellant is fired, the rocket goes one way positive momentum and the exhaust gases go in the opposite direction negative momentum. Because the rocket produces gases with great force and velocity, the rocket must respond according to Newton's 3rd law of motion - equal and opposite forces in dramatic action!
The green ball has a mass of 2. After the collision both balls are moving in a forward direction. If the green ball is still moving forward at 1. At the start both the gun and the bullet have zero moment. After firing the bullet then has its own momentum in a forward direction from the shooter.
BUT, this must be balanced by a momentum in the opposite direction because total momentum must be conserved. So, on firing, the gun itself must get its own equal but opposite momentum remember that momentum is a vector quantity! Therefore the gun's equal and opposite momentum causes it to recoil backwards. Just search for it, and it should come up.
Here are some links to a few of those platforms. Alternatively you can stream an episode directly from the episode show notes page, all of which are linked to below. Often my guests recommend books and research papers for teachers to read.
Have you found that advertising at conferences, sending emails, buying adverts in publications, or producing flyers are either expensive or have relatively little impact? Would you like to reach thousands of engaged, influential teachers to help spread your message in a relatively low-cost, innovative way?
If so, then you may wish to consider sponsoring an episode of the Mr Barton Maths Podcast. There are single and multi-episode options available. You can listen to examples of sponsor slots at the start of the following episodes:. Please drop me an email at [email protected] to discuss further. If you are new to the podcast and are looking for 4 episodes to get you started then, try these three beauties, all of which had a profound influence on how I think and teach.
I know this is a big claim, but I think this interview is an absolute must-listen for teachers of all subjects, possibly all humans full-stop. We spoke about feedback, planning, questioning, research, lesson observations, what Dylan wishes he had known when he started teaching, and so much more.
I genuinely have listened back to this interview more than 5 times, and I pick up something new on each listen. Thank you Dylan! Here we discuss just how happy or unhappy! We also discuss the mistakes schools make in terms of Pupil Premium students and measuring progress, both of which may well contribute to teacher unhappiness, with little positive benefits.
There is so much in this conversation! He is a former Fasttrack maths teacher and Senior Lecturer in mathematics education.
We had a great time digging into three areas that really interest me: lean, effective lesson planning; making our teaching memorable; and helping teachers determine and develop expertise in their profession. Get your pen and paper ready for this one, there are nuggets left, right and centre.
Slice of Advice: What did you learn this year? You will hear from the likes of Dylan William, Andrew Smith, Katharine Birbalsingh, Claire Sealy, Andrew Percival, Dan Meyer, and many others talking all things from feedback, work-life balance, signalling, metacognition, working abroad, and everything in between. A must listen for teachers of all subjects and age groups. When I am lucky enough to attend a conference, I like to sit down with a fellow delegate at the end of the day and discuss the sessions we attended and our key takeaways.
Hopefully these episodes are useful to those who could not make it on the day. We discuss a controversy about moving the decimal point, the importance of tasks, ratio tables, Increasingly difficult questions, technology, maths tricks, Times tables and much, much more.
We discuss online CPD, Don Steward, magical maths, exact trig values, misconceptions with angles, teaching the what before the why, and much, much more. Conference Takeaways: MEI Join me and Jo Morgan for a controversial Conference Takeaways podcast from the wonderful MEI Equations For Maths Gcse Edexcel Data Science Maths Conference, where we discuss everything from calclator use, schemes of work, and a potential issue with manipulatives.
Day 1 Day 2. Conference Takeaways: Educating Northants Join Jo Morgan and I for a jam-packed discussion following the excellent Educating Northants Conference about mastery at primary, a knowledge curriculum, multiple mathematical methods, dual coding, variation starters Conference Takeaways: researchEd Blackpool Simon Cox and I sat down to discuss our key takeaways from the excellent sessions we saw at researchEd Blackpool It's a good one!
We discuss the 7 myths of education, the role of metacogntion, feeding forward, curriculum, variation and smashing the bell-curve. We discuss the interesdting ways AQA are using their exam questions, Mel and Seagar's secrets of their success, Ofqual's take on last summer's GCSEs, Edexcel's reaction to Year 11s Twitter postings, Jo's favourite new maths resource sites, and just why am I both dangerous and clueless?
In a cracker of an episode if I do say so myself! Conference Takeaways: Festival of Education I had the pleasure of attending and speaking at the Festival of Education. So sit back, relax and listen to us discuss everything from curriculum, knowledge, reading, measuring progress, Ofsted, and even Love Island Festival of Education Day 1 Festival of Education Day 2.
Conference Takeaways: researchEd Rugby After the researchEd in Rugby on 9th June , Jemma Sherwood jemmaths and I sat down to share our thoughts and takeaways on the sessions we had seen.
We discussed when it is best to introduce algebra, things we have not borrowed from higher performing regions, knowledge organisers, marking, getting carried away with research, and much more!
Conference Takeaways: Comparative Judgement In this special Conference Takeaways episode, myself and English teacher Jon Sellick reflect on what we learned from attending a workshop entitled R efining assessment and reducing workload , delivered by Daisy Christodoulou, which was all about the fascinating concept of Comparative Judgement.
And just as you are getting sick of our voices, I am delighted to say that Daisy herself joins us to answer a few key questions, marking her return to the podcast following her very well-received appearance. Hopefully this will be of interest and use to anyone who was unable to make the conference. I even managed to keep the discussion to under an hour! The podcast started out being just for maths teachers.
But as the show developed, and my research widened, I realised I had so much to learn from teachers and researchers in other subjects.
These episodes are hopefully of interest to everybody, no matter what subject or age of children you teach. Doug Lemov: Tips for the return to classrooms Doug Lemov returns to the podcast to share tips to support teachers and students for the return to classrooms. Sharing takeaways from 3 books - Teach like a Champion 3. This episode was incredibly timely in March , but is relevant whenever you may choose to listen. But instead of going over the usual stuff, Ollie talks about the things surprised him whilst doing research for his new book, what Cigntive Load Theory has to say about remote teaching and online lessons, and finally Ollie helps me get my head around some aspects of the theory that I have long found confusing!
Peps McCrea: Motivated teaching Peps McCrea returns to the podcast to talk about the secret ingredient in learning - motivation.
Peps argues that it is motivation that dictates what students pay attention to, and it is what they pay attention to that determines what they are likely to remember. Peps describes the 5 core drivers of motivation, and provides practical suggestions for how teachers can tap into these in their classrooms. A must listen! Mark Healy � Part 2: Sleep, growth mindset and teaching amid Covid Mark is a psychology teacher and Deputy Head from Scotland who joins me for the second time to discuss the challenges of teaching amidst the Cobid outbreak, the importance of sleep for both students and teachers, and he thoughts about Dwek's growth mindset.
Hopefully this episode will keep you awake Adele Bates: Behaviour and relationships Adele has transitioned from an opera singer to a teachers, specialising working with students who have behavioral challenges both in mainstream schools and alternative provision centres. In this episode Adele shares her experiences, anecdotes and advice that will be useful to all teachers no matter how experienced you may be.
Mark Healy: Cognitive science versus cognitive psychology Psychology teacher and Deputy Head, Mark Healy, joins me to discuss the distinction between cognitive science and cognitive psychology, their potential misuse in schools, and how schools can build a culture whereby staff willingly engage in meaningful CPD.
Mark will also return soon to discuss sleep! But over the course of 2 hours we delve into so mich more, including the writing of and reaction to Paul seminal paper, Why Minimal Guidance During Instruction Does Not Work and what advice Paul and Carl would have for teachers trying to help their students learn amidst school closures. Special episode: Online learning during the Covid outbreak In the wake of the Covid outbreak, I sat down with 3 teachers from France who are a week ahead of the UK in terms of providing online learning to their Equations For Maths Gcse Edexcel Upload Pdf students following school closures.
Listen as we discuss what works and what doesn't. Stay safe everyone. Daisy Christodoulou � Teachers vs Tech! Daisy returns to the podcast to talk all things EdTech. What works, what doesn't work, and what does the future of education technology hold? This is a fascinating conversation with one of the sharpest minds out there. Daisy's book, Teachers vs Tech: a case for an edtech revolution is available here.
Kris Boulton � Part 3: Is cognitive science almost useless for designing effective teaching? Kris Boulton returns to the show to complete the trilogy - although Parts, 4, Here we delve deep into Kris' belief that cognitive science has severe limitations when it comes to actually helping teachers improve, and what his alternative is.
It is a cracker! Multiple Choice Questions on trial with AQA's Zeek Sweiry In a special episode of the show, I speak to AQA's resident multiple choice question guru, Zeek Sweiry to discuss the merits of diagnostic multiple choice questions both as a teaching tool and a tool of assessment.
The Science of Learning: 77 studies teacher should know Bradley Busch and Edward Watson have worked in the fields of education, sport and business, looking at research-informed strategies that help get the very best out of people. Their book - The Science of Learning - is one of the most accessible, easily-actionable education books I have read. In this conversation we discuss everything from research into memory, mobile phones and motivation.
Slice of Advice What did you learn this year? Roll on the summer! We discuss which of the principles can be put into action straight away, and which can be developed over time.
We also discuss the features of successful schools, and plenty more along the way. In his previous appearance back in , Mark claimed he had never marked a book in his life. Now in Mark shares his wisdom on all things to do with teaching for mastery, including his views on problem solving, starters, schemes of work, and much more. This is a corker of an episode. Inside Exams - Episode 1: Language Episode 1 of my new podcast series where I go behind the scenes of an awarding body in an attempt to answer the questions you want to ask.
This episode is all about the language used in exam papers! To access all episodes in the series, please visit the Inside Exams home page. He is also the author of one of my favourite books of any genre over the last 12 months - Closing the Vocabulary Gap. In this interview we delve into the importance of vocabulary across all subjects, and I discover an exciting way of introducing students to a new concept.
David Didau: Making kids cleverer David Didau is a former English teacher turned educational consultant, blogger and author.
David now has a new book out - Making Kids Cleverer: A manifesto for closing the advantage gap - and it is a little on the controversial side! In this thought-provoking conversation we cover everything from intelligence, IQ, heritability, cognitive load theory, desirable difficulties, and parenting! Slice of Advice: What does the first lesson with your class look like? Slice of Advice returns, and in this episode over 30 world-class educators give their answer to the question: What does the first lesson with your class look like?
You will hear about specific activities, setting expectation, establishing routines, and much more from the likes of Bruno Reddy, Mark McCourt, Jemma Sherwood, Jo Facer, and many more besides. I love this episode! Greg Ashman: The Truth about Teaching Following his game-changing appearance on the podcast in early , Greg Ashman returns to talk about his wonderful book, The Truth about Teaching.
And this is one sequel that does not disappoint. We cover everything from effect sizes to growth mindset, calling in at game-based learning, slow-motion problem solving and whole class feedback along the way.
This is definitely one to share with your non-maths teaching colleagues. Tom Sherrington: The Learning Rainforest Tom Sherrington is a vastly experienced teacher and headteacher, blogger, speaker, and the author of one of my favourite books, The Learning Rainforest: Great teaching in real classrooms.
In the episode we tackle all the big issues, from curriculum to assessment, lesson observations to different approaches to teaching. No matter what your subject, I think you will enjoy this one. He was a great inspiration for my work on Diagnostic Questions , and his innovative use of Twitter to summarise research findings is essential reading.
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