Questions and Answers
Which of the following is an example of a physical change?
Melting ice
What is a characteristic of a chemical change?
Formation of a new substance
Which of the following is an example of a chemical change?
Baking a cake
Study Notes
Physical Changes
- Melting of ice is an example of a physical change, as it involves a change in state from solid to liquid without altering the composition of the substance.
Chemical Changes
- A characteristic of a chemical change is the formation of new substances, often accompanied by a change in color, odor, or production of heat or light.
- Burning of gasoline is an example of a chemical change, as it involves the reaction of gasoline with oxygen to produce new substances such as carbon dioxide and water, releasing heat and light in the process.
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