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MC test: Electrochemistry, rechargeable batteries & fuel cells10 December 2017

Use the following 'quiz' to test your knowledge and understanding of this sub-topic. As this relates to a sub-topic on the options you may need access to the IB data booklet.If you get an answer wrong,... more

What are universities looking for?8 December 2017

An interesting report commissioned by ACS International Schools in partnership with the IB and IBSCA was published earlier this month. It asked university admissions officers what skills they wanted to... more

Pharmaceutical products & drug action questions 5 December 2017

1. Discuss the three different ways in which drugs can be administered by injection. State three other ways in which drugs can be administered.2. The therapeutic window gives information on the amount... more

Pharmaceutical products & drug action answers 5 December 2017

1. Drugs can be injected under the skin (subcutaneous), into the muscle (intramuscular) and directly into a vein (intravenous). Injecting directly into a vein produces the quickest reaction that affects... more

MC test: Environmental impact – global warming5 December 2017

Use the following 'quiz' to test your knowledge and understanding of this sub-topic. As this relates to a sub-topic on the options you may need access to the IB data booklet.If you get an answer wrong,... more

MC test: Solar energy1 December 2017

Use the following 'quiz' to test your knowledge and understanding of this sub-topic. As this relates to a sub-topic on the options you may need access to the IB data booklet.If you get an answer wrong,... more

MC test: Nuclear fusion & nuclear fission reactions25 November 2017

Use the following 'quiz' to test your knowledge and understanding of this sub-topic. As this relates to a sub-topic on the options you may need access to the IB data booklet.If you get an answer wrong,... more

Photovoltaic cells and DSSCs questions 22 November 2017

1. (a) Explain why metals are good conductors of electricity whereas non-metals (other than graphite) are poor conductors of electricity.(b) Explain how adding small amounts of gallium and arsenic to... more

Photovoltaic cells and DSSCs answers22 November 2017

1. (a) Metals have relatively low ionization energies and their outer electrons are delocalized so can move freely as the metal conducts electricity. In non-metals the outer electrons are normally held... more

Nuclear fusion & fission reactions (HL) questions 22 November 2017

1. The nucleus of an atom of uranium-235 consists of 92 protons and 143 neutrons.(a) Use Section 4 of the data booklet to determine the total mass (in kg) of 92 protons, and 143 neutrons. more