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Alex Johnston's Shop

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I'm a science teacher at a secondary school. 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 teacher at a secondary school. 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.
Rock types - Mind map research activity
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Rock types - Mind map research activity

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This is a mind map to print/photocopy onto A3. It can be filled out using textbooks or by researching on the internet. It also needs samples of rocks and hand lenses so students can look at and draw the structure of igneous and sedimentary rocks. Also includes a starter activity in the top-left corner.
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.
Year 7 - Science - Introduction Topic
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Year 7 - Science - Introduction Topic

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A series of 10 science lessons for Year 7 that introduces students to working in a lab and collecting data. Topics include: Initial assessment, working scientifically, collecting data, drawing a bar graph, drawing a scatter graph, making a prediction, using a Bunsen burner.
KS3 - Science - Atomic structure, chemical reactions & separating mixtures
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KS3 - Science - Atomic structure, chemical reactions & separating mixtures

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This is a series of lessons to introduce students to chemistry and separating mixtures. It covers: Atomic structure, the periodic table, elements, compounds and mixtures, balancing equations, simple chemical reactions, filtration, distillation, chromatography, acids and alkalis, pH and indicators. Included are complete lessons, handouts and assessment lessons.
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.
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.
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.
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 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.
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.
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.