AQA · Chemistry · 8462
GCSE Chemistry: Uses of nanoparticles
Bonding, structure, and the properties of matter · AQA GCSE Chemistry (8462), specification point 4.2.4.2. Cards are generated from the exam board's own specification for "Uses of nanoparticles", and every card links back to the page it came from. Separate science only. Specification © AQA — used with attribution.
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Give two applications of nanoparticles in personal-care products.
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Sun creams (and cosmetics) and deodorants.
Nanoparticles are used in industry as ? because of their very high surface area to volume ratio.
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catalysts
Name two fields, other than cosmetics, where nanoparticles are applied.
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Medicine and electronics.
Why is the use of nanoparticles considered to carry possible risks?
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Their long-term effects on human health and the environment are not yet fully understood, e.g. tiny particles may be absorbed into the body.
What must be weighed up when evaluating the use of nanoparticles for a purpose?
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The advantages of the application against its disadvantages and possible risks.
What two things do chemists use quantitative analysis to determine about substances?
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The formulae of compounds and the equations for reactions.
Name two things analysts monitor using quantitative methods once formulae and equations are known.
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The purity of chemical samples and the yield of chemical reactions.
Why do chemists classify chemical reactions into different types?
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To make sense of how chemicals react together, establish patterns and predict the behaviour of other chemicals.
Chemical ? are the key means by which chemists represent reactions and communicate chemical ideas.
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equations
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