chemistry test 2 2023

chemistry test 2 2023 advantage of using hydrogen as an alternative fuel to petrol - correct answersthe water produced does not increase the amount of greenhouse gases in our atmosphere alkenes contain .. - correct answersat least one carbon-carbon double bond name the element in carbohydrates - correct answerscarbon , hydrogen and oxygen atoms name the process for the production of alcohol using biological enzyme yeast - correct answersfermentation state the test for startch - correct answersthat it turns brown inside blue-black in colour what are alkenes - correct answersunsaturated hydrocarbons what are carbohydrates - correct answerscompounds made up of carbon, hydrogen, and oxygen atoms what are hydrocarbons - correct answersCompounds that only contain carbon and hydrogen atoms what is aloe vera plant used for - correct answers- soothes sunburn - fights bacteria - moisturisers dry skin what's a fuel - correct answersfuel is a substance that burns i