29. A physical change occurs when A. a new element is created C. elements combine to form a new molecule B. molecules combine to form a compound D. when the size, shape, or state of matter changes



30. Which of the following would cause the molecules in matter to change? A. climate B. heat C. motion D. pressure



31. Burning a match is an example of a A. chemical change B. physical change C. physical property D. chemical property​