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level: Chemical analysis

Questions and Answers List

level questions: Chemical analysis

QuestionAnswer
What is a pure substanceSingle element or compound
What are some examples of pure substancesWater, glucose, oxygen, sodium chloride etc
What is a formulationMixtures of chemicals that are designed to create more useful products
Give me an example of a formulationMetal alloys, medicines and fertilisers
Pure substances on melting and boilingOnly pure substances melt and boil at specific temperatures
What does water boil at100 degrees celcius
What does sodium chloride melt at801 degree celcius
Impure substances on melting and boilingThey melt and boil over a range of temperatures depending on how much of each substance is in the mixture
Impurities on melting and boiling point- lower melting point - increase boiling point
Quantity of each component in a formulationEach chemical component must be measured in precise quantity to ensure that the formulation works