Hero image

Alex Johnston's Shop

Average Rating4.76
(based on 2814 reviews)

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.

146Uploads

1101k+Views

4459k+Downloads

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.
KS3 - Science - Atomic structure, chemical reactions & separating mixtures
WonderCalibanWonderCaliban

KS3 - Science - Atomic structure, chemical reactions & separating mixtures

(0)
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
WonderCalibanWonderCaliban

Titration investigation-Power station emissions

(0)
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
WonderCalibanWonderCaliban

Electricity generation-card sort

(0)
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.
The Carbon cycle - large assembly
WonderCalibanWonderCaliban

The Carbon cycle - large assembly

(0)
This is a group activity. Each pdf file contains a large diagram of the carbon cycle spread across 48 pages. The students assemble the pages into a large diagram (6x8 A4 sheets, approx 1.8 m x 1.7 m). The students then use the diagram to answer the question sheet. Used in AQA B1 Energy in biomass
Build a food web activity
WonderCalibanWonderCaliban

Build a food web activity

(0)
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.
Naming organic molecules dominoes
WonderCalibanWonderCaliban

Naming organic molecules dominoes

(0)
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)
WonderCalibanWonderCaliban

Displacement reactions (Experiment worksheet)

(0)
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
WonderCalibanWonderCaliban

Rate of reaction - graph drawing activity

(0)
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
WonderCalibanWonderCaliban

The Rock Cycle Card sort activity

(0)
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
WonderCalibanWonderCaliban

Science in the news

(0)
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
WonderCalibanWonderCaliban

Understanding atomic spectra - card sort

(0)
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
WonderCalibanWonderCaliban

Investigating the Rate of Reaction project

(0)
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.