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ChemBear

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I am a GCSE and A-level Chemistry specialist teacher in a 14-18 school with 15 years teaching experience and several years research experience. I provide GCSE, AS and A2 Chemistry resources (mainly for the AQA specifications) to help students practice the concepts learned in lessons and I am a firm believer in 'Practice makes perfect'. I strive wherever possible to include the answers to the worksheets.

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I am a GCSE and A-level Chemistry specialist teacher in a 14-18 school with 15 years teaching experience and several years research experience. I provide GCSE, AS and A2 Chemistry resources (mainly for the AQA specifications) to help students practice the concepts learned in lessons and I am a firm believer in 'Practice makes perfect'. I strive wherever possible to include the answers to the worksheets.
GCSE Chemistry - Separating Mixtures: Fractional Distillation
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GCSE Chemistry - Separating Mixtures: Fractional Distillation

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A bundle of resources for GCSE Chemistry and Science Trilogy for AQA. This contains a PowerPoint with the basics of fractional distillation. A demo/practical worksheet outlining the basics of the technique is included with associated help sheet to aid students to practice writing up the practical in full, including a conclusion and questions. A cloze activity which could be used as starter or plenary is included.
AQA GCSE Chemistry / Science Trilogy 5.1 Atomic Structure Lesson
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AQA GCSE Chemistry / Science Trilogy 5.1 Atomic Structure Lesson

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A lesson to cover the AQA GCSE Chemistry and Science Trilogy Section 5.1 on Atomic Structure. This includes a PowerPoint containing a elements anagram starter, the key lesson concepts and a plenary on working out numbers of sub-atomic particles. Three worksheets/activities are attached to practice calculating the numbers of protons, electrons and neutrons in an atom (these could be used as homework tasks for higher tier students). A more simple homework (more suitable for foundation tier) is also included.
AQA AS and Year One Chemistry Key Words and Definition cards
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AQA AS and Year One Chemistry Key Words and Definition cards

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Key words and definitions for AQA AS and Year One Chemistry. In the key words and definitions file, the key words and definitions are attached but could be easily separated to produce a sort card activity or used as is for general revision. The pairs memory file contains the same key words and definitions but are separated to use as a matching activity. Definitions include oxidising agent, reducing agent, oxidation, reduction, electrophile, nucleophile, standard enthalpy of combustion, standard enthalpy of formation, hydration, substitution reaction, structural isomers, stereoisomers, mean bond enthalpy, enthalpy change, Hess’s law, activation energy, electronegativity, hydrolysis, addition reaction and elimination reaction.
GCSE Chemistry Atomic Structure Fundamentals Questions (Sticky Labels)
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GCSE Chemistry Atomic Structure Fundamentals Questions (Sticky Labels)

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The seven files listed contain 7 different questions to assess learning of the fundamentals of Atomic Structure. They are set up to be printed on 21 labels per page sticky label sheets. These can be used in conjunction with diagnostic homework - for example, if students have incorrectly answered a question on the charges on sub-atomic particles or mass numbers, these can be used to supplement and reinforce any corrections to be made upon student feedback.
AQA A2 Chemistry: Teaching Acids and Bases for the 1st Time  Section 1 Strong Acids and Strong Bases
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AQA A2 Chemistry: Teaching Acids and Bases for the 1st Time Section 1 Strong Acids and Strong Bases

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This is a booklet designed for use by either teachers teaching this topic for the first time or by students as a work booklet to support independent learning tasks or revision for the topic. The booklet covers the AQA specification and includes sections on the Bronsted-Lowry definitions of acids and bases, calculating the pH of strong acids, the ionic product of water, calculating the pH of strong bases and calculating the pH of the resulting solution when strong acids and strong bases are added together in titrations. The text includes explanations of the theory behind each section of the topic and has supporting worked examples and exercises. The answers to the exercises are included at the end of the booklet.
GCSE Chemistry Acids, Bases and Salts Worksheet
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GCSE Chemistry Acids, Bases and Salts Worksheet

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This worksheet contains questions covering the four general word equations for neutralising acids, naming salts, identifying the other products of neutralisation (water, hydrogen or carbon dioxide), identifying gases, salts, acids, alkalis and bases from equations, and practice at writing the ionic formulae of salts and metal carbonates.
GCSE Chemistry Structure and Bonding Questions (Sticky Labels)
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GCSE Chemistry Structure and Bonding Questions (Sticky Labels)

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The four files listed contain 4 different questions to assess learning of the fundamentals of Structure and Bonding. They are set up to be printed on 21 labels per page sticky label sheets. These can be used in conjunction with diagnostic homework - for example, if students have incorrectly answered a question on ionic or covalent bonding, these can be used to supplement and reinforce any corrections to be made upon student feedback. Bonding 1 looks at basic bonding questions for ammonia and Bonding 2 does the same for lithium fluoride. Bonding 3 asks students to draw the electrons arrangements for the atom and then the ion formed, working out the charges the ions end up with. Bonding 4 requires students to explain and describe the type of bonding in different substances.
AS and Year 1 Free-radical substitution Mechanisms Revision - Lollipanisms (Lollipop Mechanisms)
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AS and Year 1 Free-radical substitution Mechanisms Revision - Lollipanisms (Lollipop Mechanisms)

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A revision activity for learning and practicing free-radical substitution reactions. The above resources are needed along with a set of lollipop sticks. The stickers document contains 3 halogens (fluorine, chlorine and bromine - labelled as A, B and C) and 10 alkanes/halogenoalkanes (labelled 1 to 10) for the halogen to react with. Each pair or group of students should have a set of lollipop sticks containing 9 sticks with halogens printed or written on them (3 of each halogen) and one each of the 10 alkanes/halogenoalkanes. The sticks could be colour coded by adding a stripe of colour or washi tape around the top edge for ease of seeing. Students pick one halogen and one alkane/halogenoalkane and write the full mechanism including the initiation, propagation and termination steps. The answers are provided on 8 answer sheets which are set up to be printed on sticky labels (4 per sheet) or directly onto card to be cut up into A6 size. The cards could be ring bound (30 cards in total) to give one complete set of answers (A1-A10, B1 -B10 and C1-C10). Students can self-assess their answers. All combinations of answers included.
GCSE Chemistry 9-1 Ionic and Simple Molecular Covalent Bonding Practice Questions
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GCSE Chemistry 9-1 Ionic and Simple Molecular Covalent Bonding Practice Questions

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This resource contains 14 practice questions. Four questions are based on interpreting dot-and-cross diagrams for ionic compounds and focuses on students explaining, in terms of electrons, how atoms react. The other ten questions are additional examples of simple covalent molecules that students could be asked to apply their knowledge of completing dot-and-cross diagrams to, for example hydrogen sulphide, iodine, silicon tetrahydride, ethane etc. These resources are provided in label format with 4 identical questions per sheet. These can be printed simply on A4 paper or can alternatively be printed on 4 per sheet labels and used as a diagnostic question for homework or to reinforce key concepts before the final exam.
AQA A Level Chemistry Time of Flight Mass Spectrometer - Predicting Spectra of Diatomic Molecules
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AQA A Level Chemistry Time of Flight Mass Spectrometer - Predicting Spectra of Diatomic Molecules

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This resource consists of 3 PowerPoint presentations and 1 worksheet guiding students in how to predict the mass spectra of the diatomic molecules chlorine and bromine. This leads students through using simple probability to calculate the ratio of the 3 molecular ion peak heights and in sketching the spectra of chlorine and bromine. Also included are 2 application questions requiring students to apply their knowledge of probability in predicting the mass spectra of oxygen and nitrogen molecules.