1) The law of conservation of mass states that a) matter cannot be created or destroyed b) the mass will always increase in a chemical reaction c) the mass will always decrease in a chemical reaction 2) In order to determine if the law of conservation of mass is shown correctly in a chemical reaction model or equation you should count the a) molecules in the reactants and products b) atoms in the reactants and products c) elements in the reactants and products 3) Does this image demonstrate the law of conservation of mass? a) No, there are too many yellow hydrogen atoms in the products b) no, there are not enough blue oxygen atoms in the products c) no, there are two molecules in the reactants and only one molecule in the products 4) Does this image demonstrate the law of conservation of mass? a) Yes, there are the same number of each type of atom in the reactants as in the products b) yes, there are two molecules in the reactants and two molecules in the products c) no, because the atoms are all mixed up now 5) Does this image demonstrate the law of conservation of mass? a) Yes, we start out with one black atom, 6 red atoms, and 4 white atoms and the products have all the same atoms present.   b) no, there are 3 red atoms in the reactants and 4 red atoms in the products c) no, there are 6 red atoms in the reactants and 4 red atoms in the products. 6) Does this image demonstrate the law of conservation of mass?  a) No, there are not enough atoms in the products b) No, there are too many atoms in the products c) Yes, there are the same number of each type of atom in the reactants and in the products. 7) Does this image demonstrate the law of conservation of mass? a) No, there are not enough atoms in the products b) No, there are too many atoms in the products c) Yes, there are the same number of each type of atom in the reactants and in the products. 8) Which equation demonstrates the law of conservation of mass? a) A b) B c) C d) D 9) How does this image demonstrate the law of conservation of mass? a) The same atoms that are present in the reactants are present in the products. b) No atoms were created or destroyed, they were just rearranged to make new molecules c) The mass of the reactants is the same as the mass of the products d) All of these descriptions demonstrate the law of conservation of mass.

Conservation of mass

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