Which change is most likely to occur when a molecule of h2 and a molecule of i2 collide with proper orientation and sufficient energy? 1. a chemical change, because a compound is formed 2. a chemical change, because an element is formed 3. a physical change, because a compound is formed 4. a physical change, because an element is formed
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and a molecule of 
collide with proper orientation and sufficient energy then the chemical changes occurs due to the formation of the new compound.Another question on Chemistry
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How does water evaporating from a glass show that matter is made up of particles? a. the heat energy from the air causes the glass to fill up with water particles. b. the liquid water particles turn into water vapor that spreads in the air. c. the particles of the glass dissolve in water and cause it to evaporate. d. the tiny particles of the glass evaporate and seem to disappear.
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Which change is most likely to occur when a molecule of h2 and a molecule of i2 collide with proper...
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