Chemistry Final Review Chapter 6: Chemical Reactions – Flashcards

Which of the following can be obtained from a balanced chemical equation? A) The identity of the reactants and products. B) The physical states of the reactants and products. C) The relative numbers of each reactant and product. D) all of the above E) none of the above

Which of the following statements is true about a chemical reaction? A) It involves changing the ways the atoms are grouped. B) In a chemical reaction atoms are neither created nor destroyed . C) In a chemical reaction mass is conserved. D) all of the above E) none of the above

Which of the following can be done in balancing a chemical equation? A) change the formula of the reactants and/or the products to balance the reaction B) change the subscripts of the atoms in the reactants and/or in the products to balance the reaction C) change the coefficient of the reactants and/or the products to balance the reaction D) all of the above E) none of the above

True/False Butane, C4H10 reacts with oxygen gas to form carbon dioxide and water. In writing the chemical equation for this chemical reaction, oxygen gas is represented as O2(g) and not as O(g).

True/False The best balanced equation has the largest integers for the coefficients of each of the reactants and products.