Question 9 of 20 Which of the following is an example of a chemical change?
O A. A solid dissolving in a liquid
B. A solid reacting with a gas to form a new solid
C. A mixture of a solid and a liquid famming
O D. A liquid evaporating into a gas

B

Explanation:

The solid and the gas are forming a brand new solid which is a chemical change

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in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

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