A two page worksheet with problems for students to solve using the formula that relates moles, particles and Avogadro’s number. The first two pages do not have solutions. The second two pages are the same but show the solutions. These can be used if you want students to check their answers.

A two page worksheet. Students can practice determining molecular formulas using empirical formulas and molar mass, and by first determining an empirical formula from percentage composition. The first two pages do not have solutions. The second two pages are the same but show the solutions. These can be used if you want students to check their answers

A two page worksheet. Students can practice determining empirical formulas of ionic and organic compounds from percentage composition and mass. Some problems require multiplication of the simplest ratio to obtain the simplest whole number ratio. The first two pages do not have solutions. The second two pages are the same but show the solutions. These can be used if you want students to check their answers.

A two page worksheet. Students can practice calculating concentrations, total volumes and volume of water added. The first two pages do not have solutions. The second two pages are the same but show the solutions. These can be used if you want students to check their answers

A two page worksheet. Students can practice converting between moles and mass of compounds given chemical formulas or names. The first two pages do not have solutions. The second two pages are the same but show the solutions. These can be used if you want students to check their answers

A one page worksheet. Students can practice determining the molar mass of compounds including formulas with brackets and hydrates. The second page has solutions.

A colour coded template for writing chemical formulae. It was designed to assist year 9 and 10 students in curriculum support but mainstream students found it helpful too, particularly when chemical formulae writing is introduced.

Students carry out a series of activities involving simple chemical tests, chromatography, microscope use and fingerprint analysis to determine who stole the cookies. Pages 1 to 4 can be printed back to back and laminated for re use. Page 1: outlines the activity and flowchart for chemical tests Page 2: examples of types of fibres and their features Page 3: examples of eight types of fingerprints Page 4: chromatography instructions - methylated spirits can be replaced with ethanol or another solvent depending on the type of pens used. Page 5: template for “suspect fingerprints”. Print and laminate copies for groups, and print one set and cut them up to use as “prints from the scene” Page 6: evidence and analysis sheet. Students record the information from their analysis of each piece of evidence - they can use sticky tape to stick in some fibres, their chromatography strip and a suspect fingerprint Put together sets of evidence from the scene for student teams to collect for testing: containers with fibres and white powder, photocopies of a few fingerprints from the “scene” Any pens will need to to be set up so that all students can come and use them to prepare their chromatography strip. A chromatograph of the pen that wrote the note and the “piece” that was found in a plastic bag (taped to bench or window/wall somewhere). Not to be removed students have to come and look at it to check. If more groups are involved this can easily be adapted to change which suspect is guilty.

A set of ion cards with formulas and names of ions which can be copied onto different coloured card and cut out. These visual manipulatives were designed to help students learn to write chemical formulas. Suggestions on ways to use the cards are included. This is an activity I designed and published on my website in 2000. It was subsequently published in the Netherlands Journal for Science Teachers, “Impuls”, 2003, 10(2), 38. Co-author Maria Cornelisse (APS, Institute of School Improvement, Utrecht, The Netherlands). The State Department of Education in Western Australia also requested permission for all Australian schools to store the website on their servers and make hard copies of the materials as required.

The resource is a group activity for 3 students based on the patterns in electronic configuration for the first 20 elements and their positions in the periodic table. Suitable for Years 9 and 10. Once each group has completed their periodic table they should be asked to look for any patterns they observe. You could extend the 10's by asking them to predict the number of shells and valence electrons for other elements in the table. It is an interesting start to the question 'what about the transition elements?'

A card set of microscope pictures and the names and functions of parts. Hand cards out to students and they have to find the other students with matching cards, or play concentration with them.

A colour coded template for writing chemical formulae. It was designed to assist year 9 and 10 students in curriculum support but mainstream students found it helpful too, particularly when chemical formulae writing is introduced.

The resource is a group activity for 3 students based on the patterns in electronic configuration for the first 20 elements and their positions in the periodic table. Suitable for Years 9 and 10. Once each group has completed their periodic table they should be asked to look for any patterns they observe. You could extend the 10's by asking them to predict the number of shells and valence electrons for other elements in the table. It is an interesting start to the question "what about the transition elements?"