I'm having some trouble on my homework and could really use some helpSee attached: Question 7Which of these statements is not correct according to Dalton's atomic theory?Elements combine in fixed proportions to form compounds.Atoms are converted into other atoms in a chemical reaction.All matter is composed of small indivisible particles called atoms.O The atoms of one element are different from the atoms of another element.O Atoms of different types can combine to form compounds.Question 8Which of these is the best definition of a scientific hypothesis?O A prediction based on a limited number of observationsO A method of explaining observations that appears contradictoryA broadly applicable generalization with virtually no exceptionsA method for approaching problems that is used by all scientistsA tentative model that describes the underlying cause of observations and lawsDQuestion 9Which of the following scientists is responsible for establishing the early atomic theory using the laws of conservation of mass and other related laws and observations?O BohrProustO DaltonO LavoisierO Galileo

Since you have posted multiple questions, we are entitled to answer the first only. According to Dalton's atomic theory, the below postulates are true. a) Elements combine in fixed proportions to form a compound: As per this postulate, any compound will always have the same fixed proportion of all the elements present in the compound irrespective of the way it is formed. b) All matter is composed of small indivisible particles called atoms: As per this postulate, he suggested that the smallest building block of every matter in the universe is atoms. c) The atoms of one element are different from the atoms of another element: As per this postulate, the atoms of every single element will have a unique feature and hence will act differently. d) Atoms of different types can combine to form compounds: Different or same atoms combine to form matter in-universe is what this postulate suggested. e) Atoms are conserved in a reaction and do not convert to other atoms in a reaction: As per the theory, he suggested that the atoms can neither be destroyed nor created and hence in any reaction, the total number of atoms of a single element will be the same in both sides of the reaction. Therefore the correct answer is option Atoms are converted into other atoms in a chemical reaction.