(Question)
Q: What happens when alkanes are mixed with oxygen at room temperature? Choices: - single replacement - redox - combustion - no reaction A:
(Answer)
no reaction

(Question)
Q: Coal, oil and natural gas are types of what formed from the remains of once living organisms? Choices: - living fossils - fossil compounds - crop fuels - fossil fuels A:
(Answer)
fossil fuels

(Question)
Q: How much exercise should a person ideally get during a single day? Choices: - six hours - three hours - fifteen minutes - hour A:
(Answer)
hour