1) ) Soap is formed by the reaction  a) oil with solid sodium hydroxide b) oil with hydrochloric acid. 2) ) Which of the following expresses chemical change a) The conversion of charcoal to ash b) The melting of ice. 3) Which of the following is considered as a chemical change that occurs to a piece of paper ? a) Burning it b) Coiling it 4) Which of the following is considered as a chemical change that occurs to a piece of paper ? a) Burning it b) Coiling it 5) All the following are examples of physical changes in size, except a) cutting a paper b) coloring a piece of paper c) cutting a piece of banana 6) All the following are examples of physical changes in size, except a) cutting a paper b) coloring a piece of paper c) cutting a piece of banana 7) cutting a piece of banana a) physical change b) chemical 8) coloring a piece of paper chemical change  a) true b) false 9) The melting of ice chemical change a) true b) false

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