C. The force of air resistance acts in the same direction as the force of gravity
The answer to this question would be that the amount of No and SO3 would increase. The correct choice is C.
Answer is: It can be reshaped by a force.
Physical property can be observed and measured without any changes in molecular composition. The same substance is present before and after the change, changing the shape is physical change.
Copper reaction with acid, ignition and combination with oxygen are chemical change (chemical reaction), because new substances are formed, the atoms are rearranged and the reaction is followed by an energy change.
Answer:
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The answer is: 1. periodic table
