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If you would like to be kept up-to-date with
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Assuming I can get this to work as intended, then
if you suscribe to the RSS feed you should get an
automatic up-date everytime I decide there has
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Link to Facebook Page

I have tried to keep Facebook at arms length but
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Link to Google+ Page

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needed to have a Google log-in, I've created a Google+
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National 1

Though there will be National 1 courses produced, equivalent to Access 1, these are rarely used in mainstream schools. On this website Level 1 will refer to courses normally taught to 11/12 year old pupils in first year of Secondary school.

- KS3 || - K9

National 2

Though there will be National 2 courses produced, equivalent to Access 2, these are rarely used in mainstream schools. On this website Level 2 will refer to courses normally taught to 12/13 year old pupils in second year of Secondary school.

- KS3 || - K9

National 3

Though National 3 Qualifications may be used with older pupils, the content is very much at the Introduction to Chemistry level and could be used with pupils S1-S3 (11 - 14yrs).

- KS3 || - K9

National 4

National 4 is the beginning of more specialised Chemistry teaching. Internally assessed mainly. Pupils S3/4 (14/15yrs).

- KS3 || - K9

National 5

Is a specialised Chemistry course designed to take pupils onto Higher level. Externally assessed. Pupils S3/4 (14/15/16yrs).

- KS4 || - K10


This is the specialised Chemistry course which provides the entrance requirement for many Further Education courses. S5 (16/17 years).

- AS || - K11

Advanced Higher

This overlaps with early stages of Degree courses. Though not essential, this course is aimed at those seriously considering studying Chemistry or related subjects at University. S6 (17/18 years).

- A2 || - K12

Mixed Bag

I'll use this for resources that are not specifically aimed at any particular course and may well be simply for fun.

Regular Users

If you are a regular user of this website, and any of the Resources that I have personally produced, you may like to make a small donation.

Searching For Resources

At the moment, the Search Engine will search all of my websites so expect most hits to be for the older version of my website until I have completely transferred all the resources over.

N5ChemTutor App

N5ChemTutor for iPad, iPhone and iPod touch.

Apple Store Download Badge


Monday, 11 Sep 2017

I'm presently writing Topic 5 - Calculations and Topic 6 - Acids and Bases (working titles, may change).

At that point I'll be rebranding the App as N5ChemTutor1 and will start charging a modest fee for the App. If I achieve sufficient sales, then I will be able to start on N5ChemTutor2.

Monday, 01 May 2017

N5ChemTutor App (1.4.1) is under review and should appear on App store in next few days.
This included Topic 4 - Structure & Bonding

Good luck to those sitting Chemistry Exams on 8th May!
Friday, 02 Sept 2016

N5ChemTutor App (1.2.1) was launched on App store.
This included Topic 2 - Atomic Structure and Nuclear Chemistry

Monday, 06 June 2016

N5ChemTutor App (1.1.3) was launched on App store.
This included Topic 1 - Reaction Rates and Investigation Skills

N5 Hydrogels Assignment

This is my attempt to walk the fine line between 'supporting' and 'spoon-feeding' pupils involved in researching Hydrogels.

For example, the Flash 'slide show' below attempts to highlight some of the relevant Theory covered in N5 (and later courses) whilst leaving the pupils to research for themselves exactly what they need for their Report.

For the rest, it is mainly 'hard to find' resources - many of which have been found and shared by teachers through groups such as SSERCCHEM and STRONTIUM, which I gratefully acknowledge. Any resources produced specifically by teachers for this assessment, I will password protect to allow individual teachers to decide if they would be 'allowable', without their pupils having prior access.

Get Adobe Flash player

KHS Assignment 2014

TASK:- To compare disposable (HYDROGEL) nappies with the other types available.

What materials are used to make the nappies?

Which nappies are best at absorbing water?

What are the economic/social/environmental impacts?

N5 Daybook KHS version

KHS - Nappy Debate

Destination Green
Baby Center
Nap Nap
ABC News

KHS - Nappy Comparison Data

On this website, you will find a document titled "Model Lab Report" which includes data for some disposable nappies which can be compared with your results.

Nappy Comparison Report
Report (pdf version)

KHS - Practical

Practical Instructions (Modified)

KHS - Other Nappy Types

This video introduces you to some of the alternatives to disposable (hydrogel) nappies,

Go Real Nappies (html)

KHS - How Nappies Work

This video explains how disposable (hydrogel) nappies work.

YouTube Video (html)

KHS - How Nappies Are Made

This video explains how disposable (hydrogel) nappies are made.

YouTube Video (html)

Resource 1

An animated lesson on the Theory of Hydrogels pitched at the 'right level', straddling N5 and Higher Chemistry.

Super Absorbent Polymers (SWF)

Resource 5

The Science Behind the Oil Spills
Environmental Effects Of Oil Spills
Methods For Cleaning Oil Spills
Equipment Used to Clean Up Oil Spills

Oil Spills Webpage (html)

Resource 6

Very quotable overview of Hydrogels.

What are Hydrogels? (pdf)

Resource 10

Useful resource that considers potential hazards of using hydrogels in nappies.

BabyCentre WebPage (html)

Resource 2

A Catalyst article about hydrogels. Soft contact lenses, disposable nappies, hair gel and plant water crystals all make use of substances called hydrogels. These are polymers which have the unusual property of being able to absorb huge quantities of water. The article looks at the structure of hydrogels and their uses; there are also two experiments that can be carried on domestic products.

Catalyst Article (pdf)

Resource 7

Activities adapted from educational materials developed by Middlesex University Teaching Resources (MUTR). Includes a useful fact Sheet.

Start Smart - Hydrogels (pdf)

Resource 11

An excellent resource providing a cost comparison between different types of nappies - with and without hydrogels. Good Tables & Charts.

Nappy Cost Comparison Charts(html)
Nappy Cost Comparison Charts(pdf)

Resource 3

Life Cycle Assessment of Disposable and Reusable Nappies in the UK by the Environment Agency. Not easy, but has Data Tables aplenty. Also has an 'unexpected' overall conclusion:

"There is no significant difference between any of the environmental impacts of the disposable, home use reusable and commercial laundry systems that were assessed. None of the systems studied is more or less environmentally preferable."

Environment Agency Report (pdf)
BBC Article on Report (html)

Updated (and much shorter) version of the report. Again, possibility of using some of the data (not easy) or linking to environmental impact.

Environment Agency Report 2 (pdf)

Resource 8

Some resources provided by another Teacher. Includes a shortened version of the Catalyst article (Resource 2), a guide to a suitable practical and an extended Pupils Guide. Password protected. Teachers should e-mail me for password.

Shortened Catalyst Article (pdf)
Hydrogel Practical (pdf)
N5 Student Guide (pdf)

Resource 4

Hydrogel polymers are long molecule chains that grab onto water molecules. Some can soak up as much as 500 times their weight in water! This superabsorbent characteristic makes hydrogel polymers useful in water conservation and in solving other environmental issues.

Hydrogels & Soil (pdf)

Resource 9

Berkeley Engineers And mentors (BEAM) Hydrogels Lesson Plan. Practicals and background information as well as various uses.

Hydrogels Lesson Plan (pdf)

Resource 12

Video showing the use of Hydrogel microneedles.

Hydrogel Microneedles (video)

Resource 13

Video showing the use of Hydrogels in the delivery of drugs within the body.

Hydrogel Drug Delivery (video)

Resource 14

Discover what disposable nappies and fake snow have in common. Also has an excellent description of the Hydrogel structure and how it works.

'Let It Snow' (Video)
'Let It Snow' (pdf)

Resource 15

Lovely video showing the interaction between sodium polyacrylate crystals and water in close-up.

Resource 16

An excellent resource covering just about every possible use of Super Absorbent Polymers (SAP). Well presented with some useful Data but not too detailed so reasonably concise as well.

SAP Showcase (pdf)

Resource 17

British Society of Soil Science 2004. Infl̄uence of sodium polyacrylate on the water-holding capacity of three different soils and effects on growth of wheat

Use in Soils (pdf)

Resource 18

Useful for those looking the use of hydrogels in the soil. Written by a young Texan, Megan (15), this was a winning essay in the 2009 Young Naturalists Awards. Some good tables of Data.

Application of Superabsorbent Polymers (html)

Resource 19

Download (Zip file) Moray Hydrogel Resources as posted on Glow (Feb 2014).

Moray Hydrogels (Glow)