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Alex Johnston's Shop

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I'm a science/chemistry teacher at a 6th form college. I love making resources. I put a lot of time into them, so like that as many people as possible find them useful. Please rate anything you find useful. Contact me with any questions.

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I'm a science/chemistry teacher at a 6th form college. I love making resources. I put a lot of time into them, so like that as many people as possible find them useful. Please rate anything you find useful. Contact me with any questions.
Science in the news
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Science in the news

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This is an activity suitable for a lesson or as a piece of homework. It is designed to develop literacy and promote an interest and awareness in science. The students find a science based news story published in the last 7 days that they find interesting. They pick out keywords and find definitions for them. They research additional information and summarise the story in their own words.
The Menstrual cycle
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The Menstrual cycle

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Written for AQA B1 but can be used at KS3 or for other specifications.Posters are placed around the room and students go round and answer questions from a worksheet (included in PowerPoint).
Reflection of light - Mirror maze
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Reflection of light - Mirror maze

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Suitable for use as a starter or plenary. This is a one page diagram that the students are asked to complete. It asks the students to complete the path of a laser as it is reflected off a series of mirrors to a detector. They have to work out the angles of incidence and reflection. Requires a protractor. Can be used for AQA P1 - Waves - Reflection.
Build a food web activity
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Build a food web activity

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An activity that allows students to build a food web and work out the numbers of animals. Then asks them to see how changing the numbers of one animal changes the rest of the web. Requires: String, scissors and counters. Sheets need printing and photocopying. Includes results table and questions and a completed results table for the teacher. Also includes slides to incorporate into your lesson to review the activity. There is a version which is for more advanced students and a lower ability/starter activity version which is just to build the food web.
Displacement reactions (Experiment worksheet)
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Displacement reactions (Experiment worksheet)

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A worksheet for a practical chemistry experiment where students investigate displacement reactions. Using a spotting tile, students react combinations of metals and salt solutions, then idntify which ones have reacted. They then compare their results to the reactivity series and try to write word equations for what the have seen.
Understanding atomic spectra - card sort
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Understanding atomic spectra - card sort

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These are slides which can be printed and given to the students as cards for a 10 minute card sort activity to support a lesson on atomic spectra. It helps them understand atomic emission and absorption spectra in terms of adsorption and emission of photons by the electrons in an atom. Included is a pdf with 4 cards on each page and the original PowerPoint from which they were made.
Investigating the Rate of Reaction project
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Investigating the Rate of Reaction project

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This is an investigation into the effect changing the concentration of hydrochloric acid has on its rate of reaction with magnesium. This is intended as a short project over several lessons to get students used to some of the factors needed in an investigation write-up. Includes student investigation sheet, mark scheme and grading information. The mark scheme is written with the students in mind, the intention is to give it to them with the student guide to encourage them to get maximum marks and or as a tool for peer-assessment.
Elements and compounds - Molymod activity
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Elements and compounds - Molymod activity

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Written for AQA C1 - Atoms, elements and compounds. But can be used at KS3. Print in colour on A3. Students need Molymod kits, the worksheet directs them to build different models of molecules and identify if they are elements or compounds.
Rate of reaction - graph drawing activity
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Rate of reaction - graph drawing activity

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In this activity students draw a graph modelling the rate of decomposition of hydrogen peroxide. Then sketch and explain how the curve changes with increasing concentration, a catalyst and increasing temperature.
The rate equation
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The rate equation

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These are a series of activities leading the students through, methods of following a rate of reaction, finding the initial rate, rate orders, the rate equation and half lives of reactants.
AQA P1 -Energy transfer by design - activity
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AQA P1 -Energy transfer by design - activity

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This is an activity was written for AQA P1 -Energy transfer by design. Split students into groups, give each group a question based on their ability, they apply their knowledge from the previous lessons in the topic. Then present what they have worked out to the rest of the class.
Word and symbol equations - carousel of 6 experiments
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Word and symbol equations - carousel of 6 experiments

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This is a worksheet which supports a carousel of 6 experiments where students add reagents in test-tubes and make observations. They then use scaffolding on the sheet this to build word and symbol equations. They are then challenged to balance the equations and add state symbols. This is intended as a 20-30 minute activity to help students develop skills in creating equations based on reactions.
Naming organic molecules dominoes
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Naming organic molecules dominoes

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A 10 minute activity where students match names of organic molecules to their skeletal, structural or full structural formula. Useful as an introduction to organic chemistry or as revision.
The Rock Cycle Card sort activity
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The Rock Cycle Card sort activity

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These are 12 picture cards each describing a different stage of the rock cycle. They can be cut out and arranged by the students. Could be a 15 minute activity on its own, or could be a longer activity if you ask the students to use the cards as a basis for making their own poster.
Titration investigation-Power station emissions
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Titration investigation-Power station emissions

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The aim of this experiment is to use results of a titration to perform a calculation linked to a real life example of measuring sulphur dioxide emissions from a power station. The scenario is that students are given a solution of sulfuric acid produced when waste gas from a power station is bubbled through hydrogen peroxide. They perform a titration the sulfuric acid against a known solution of sodium carbonate then use the results to calculate the mass of sulfur dioxide in the waste gas. Included in the PowerPoint is an introduction to the experiment, teachers notes, results table, instructions for students, advice on performing titrations and how to do the calculations. Depending on the group, different levels of support can be given.
Electricity generation-card sort
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Electricity generation-card sort

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This card sort activity allows students to create a flow diagram explaining the processes in different types of electricity generation. They can also describe the energy transfers that take place. They can build flow diagrams for coal, oil, gas, nuclear, tidal, wave, geothermal, wind & solar energy.
Bird Flu Pandemic in the USA - Interactive scenario
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Bird Flu Pandemic in the USA - Interactive scenario

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This is an interactive scenario which covers the US governments response when a bird flu outbreak spreads to the US from China in a global pandemic. The students are given key choices at each stage of the pandemic which affect the number of US citizens getting sick and the overall death toll. The tough choices can be used to encourage debate within your class and get students to justify their decisions. This can be used in either science, politics or history class and will last approximately 20-30 minutes. Provided are slides and accompanying worksheet.