GENERAL SCIENCE CLASS 7 Physical and Chemical Changes Chapter 7 MCQS by Halar GabolFebruary 2, 2024April 16, 2024 Physical and Chemical Changes ( PART 2 ) 1. Which of the following is NOT a characteristic of a chemical change? Reversibility Formation of new substances Change in energy Change in color 2. What type of change occurs when iron rusts? Chemical change Thermal change Physical change Mechanical change 3. Which of the following statements is true about a chemical change? It only involves a change in physical properties It does not involve the formation of new substances It involves a change in the chemical composition of substances It can be easily reversed 4. Which of the following is an example of a physical change? Burning wood Digesting food Baking a cake Cutting paper into pieces 5. When sugar dissolves in water, it is an example of: Nuclear change Biological change Physical change Chemical change 6. Which of the following is NOT an example of a chemical change? Cooking an egg Rusting of iron Burning a candle Dissolving salt in water 7. What happens when vinegar reacts with baking soda? Physical change Formation of a new substance No change occurs Only a change in temperature 8. Which of the following is NOT a sign of a chemical change? Change in color Change in temperature Change in shape Formation of gas bubbles 9. Which of the following statements is true about physical changes They only involve a change in state. They always produce new substances. They involve a change in chemical composition. They are always irreversible. 10. Mixing sugar and water is an example of: Nuclear change Physical change Biological change Chemical change Loading … Pages: 1 2 3 4
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