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Andrew Bradshaw

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Total answers27 questions answered
Total hoursUnder 5 hours taught
Total resources12 resources uploaded

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Hi, I'm Andrew

Experienced international teacher and school leader. Have taught Chemistry to A Level and HL IBDP and Biology to A Level at home and abroad. Successfully helped students into Russell Group and Ivy League universities.

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My education

University at Buffalo SUNY logo

University at Buffalo SUNY

MSc Multidisciplinary Studies (2014 - 2017)

Keele University logo

Keele University

PGCE Chemistry and Science (2001 - 2002)

Staffordshire university logo

Staffordshire university

BSc Chemistry (1998 - 2001)

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My resources

Chemistry
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Andrew Bradshaw

31 views

NotesBuffer solutions

An overview of buffers

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Chemistry
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Andrew Bradshaw

28 views

NotesEntropy and Gibbs Free Energy

An overview of Entropy and Gibbs ree Energy

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Chemistry
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Andrew Bradshaw

35 views

NotesOzone Depletion

An overview on ozone depletion

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Chemistry
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Andrew Bradshaw

28 views

Homework activityIdeal Gas Practice Calculations

Practice questions on the concept of ideal gases

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Chemistry
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Andrew Bradshaw

27 views

NotesBuffer Solution Calculations

Helping to understand buffer solution calculations

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Biology
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Andrew Bradshaw

31 views

Classroom resourcesCell Division GCSE Revision

Revision of AQA 4.1.2 Cell Division

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Chemistry
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Andrew Bradshaw

30 views

Chemistry
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Andrew Bradshaw

29 views

NotesEnergetics Overview

An overview of Energetics

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Science
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Andrew Bradshaw

28 views

NotesAccuracy and Precision

Notes on the differences between accuracy and precision

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Biology
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Andrew Bradshaw

28 views

NotesDihybrid Crosses and Punnett Squares

Practice on producing Punnett Squares

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Biology
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Andrew Bradshaw

30 views

NotesWhat is DNA?

An overview of DNA

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Physics
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Andrew Bradshaw

31 views

NotesSUVAT Derivation and practice

SUVAT equation practice

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My answers

Asked by Mazie

Maths 💯
Solve : 30 + 3x = 240?
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Andrew Bradshaw

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Subtract 30 from each side of the equation... 30 + 3x - 30 = 240 - 30 This leaves us with... 3x = 210 If we then divide each side by 3... 3x/3 = 2...Learn more

Asked by Mazie

Maths 💯
Solve : 30+x=11?
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Andrew Bradshaw

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In order to make x the subject of the expression we must subtract 30 from each side of the equation... 30+x-30 = 11-30 This leaves us with... X = 1...Learn more

Asked by Toby

Chemistry ⚛️
Why is potassium more reactive than sodium?
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Andrew Bradshaw

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This is todo with the structure of the atoms. Both are in Group 1 of the periodic table so have one valence (outer) electron which is relatively eas...Learn more

Asked by Maggie

Maths 💯
What’s Pythagoras?
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Andrew Bradshaw

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I assume you refer to Pythagoras’ Theorem which relates to the length of sides of a right angled triangle. It states that the sum of the squares of ...Learn more

Asked by Nabihah

Geography 🗺
What’s a isotope?
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Andrew Bradshaw

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Isotopes are atoms of the same element with different relative masses, that is to say the atoms have the same number of protons, the same number of ...Learn more

Asked by Addie

Biology 🌱
What is photosynthesis?
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Andrew Bradshaw

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Photosynthesis is the process by which plants produce glucose and oxygen from water and carbon dioxide in tge presence of chlorophyll and sunlight ...Learn more

Asked by Amrat

Chemistry ⚛️
What is Stoichiometry in chemistry?
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Andrew Bradshaw

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Stoichiometry is the ratios of reactants and products within reactions, and often encompasses the calculation of masses, moles, volumes and/or conce...Learn more

Asked by Audrey

Biology 🌱
What would happen to cells in a solution if water is added?
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Andrew Bradshaw

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This would depend on the nature of the solute, the concentration of the solution and how much water was added.

Asked by Elena

Maths 💯
How do you work out half equations in electrolysis?
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Andrew Bradshaw

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Firstly you need to know the electrolyte and thus the cation(s) and anion(s) involved. Then you know the ions will be attracted to the oppositely c...Learn more

Asked by Elena

Maths 💯
How do you work out half equations in electrolysis?
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Andrew Bradshaw

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Firstly you need to know the electrolyte and thus the cation(s) and anion(s) involved. Then you know the ions will be attracted to the oppositely c...Learn more

Asked by Jess

Chemistry ⚛️
Compare decomposition reactions with combustion reactions?
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Andrew Bradshaw

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Decomposition reactions see the reactant(s) break down into the product(s) Combustion reactions involve the reactant(s) reacting with oxygen

Asked by Kiran

Chemistry ⚛️
How to calculate concentration of a solution?
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Andrew Bradshaw

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Concentration (measured in moles per litre) = amount of solute (measured in moles) divided by the volume of solution (measured in litres) The amoun...Learn more

Asked by Keira

Chemistry ⚛️
What is an element?
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Andrew Bradshaw

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In chemistry, an element is something that consists of only one type of atom.

Asked by Nicole

Chemistry ⚛️
What is an acid and what is an alkali?
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Andrew Bradshaw

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The answer to your question really depends upon the level of answer that you need. At a most basic level (excuse the chemistry pun!), acids taste s...Learn more

Asked by Abigail

Chemistry ⚛️
When iron oxide is heated with carbon, iron is produced. What would be the word equation for this reaction?
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Andrew Bradshaw

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Iron oxide + carbon —-> iron + carbon dioxide

Asked by Dominique

Chemistry ⚛️
How does an atom of lithium form an ionic bond with an atom of chlorine?
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Andrew Bradshaw

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Lithium ‘loses’ its valence electron and forms a positive lithium cation. Chlorine ‘gains’ that electron and forms a negative chloride anion. The ...Learn more

Asked by Rosie

General 🏛
Empirical formulas??
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Andrew Bradshaw

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These are the simplest whole number ratios of elements within a compound. To calculate them, you must work out the number of moles of each element w...Learn more

Asked by Jack

General 🏛
What is the empirical equation for Phosphorus Oxide (P4 O10)?
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Andrew Bradshaw

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As empirical formula is the simplest while number ratio, we take the actual ratio of 4:10 and simplify to 2:5 making the empirical form P2 O5

Asked by Dominic

Maths 💯
How is the sequence -1/1, -2/4, -3/7, -4/10, -5/13 a linear sequence? How do I find the nth term from this???
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Andrew Bradshaw

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Here we can see the numerator is decreasing by one in each subsequent part of the series (-1,-2,-3,-4,etc) The denominator is increasing by 3 each t...Learn more

Asked by Selina

General 🏛
What's the best way to revise over the christmas holidays?
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Andrew Bradshaw

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Prepare a revision timetable of many, small, focussed chunks - and then stick to it!!

Asked by Bireanna

General 🏛
What are the groups in the periodic table?
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Andrew Bradshaw

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The groups are the vertical columns of the table. The members of each group exhibit similar properties to each other, which relate to their electron...Learn more

Asked by Mahisha

General 🏛
A pen costs $t. A pencil costs half as much as a pen. A marker cost $7 more than a pencil. A) what is the cost of the marker in terms of t? B)If the pen costs $10, what is the cost of the marker?
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Andrew Bradshaw

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Pen = t Pencil = t/2 Marker = (t/2)+7 If t = 10, Marker = (10/2) + 7 = $12

Asked by Abbie

General 🏛
Does endothermic make the solution hot and then exothermic make it cold?
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Andrew Bradshaw

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This depends upon the reaction system that you are describing... By definition, endothermic reactions take in energy (ENdo ENters), so the reaction...Learn more

Asked by Maria

General 🏛
What is the definition of photosynthesis for GCSE?
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Andrew Bradshaw

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The process that plants undertake to produce food. Carbon dioxide and water are taken in, chlorophyll and sunlight are needed to allow the reaction...Learn more

Asked by Sam

General 🏛
In French is it right to say : je suis douze ans when I say how old I am please??
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Andrew Bradshaw

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Non! J’ai douze ans It is like saying “I have 12 years”

Asked by Daisy

General 🏛
Lithium chloride is soluble in water, whereas silver chloride is not soluble in water. Suggest how this information can be used to obtain pure dry samples of lithium chloride and silver chloride from a solid mixture of the two. (3?
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Andrew Bradshaw

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(i) dissolve the mixture (ii) filter to separate the silver chloride (iii) leave both samples to dry

Asked by Keira

Maths 💯
Solve 5p + 7= 3(4-p)?
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Andrew Bradshaw

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5p + 7 = 12 - 3p 5p + 3p + 7 = 12 - 3p + 3p 8p + 7 = 12 8p + 7 - 7 = 12 - 7 8p = 5 P = 5/8 or 0.625