False. Not necessarily. Do not confuse kinetics with thermodynamics. Although an enzyme as a catalyst decreases the activation energy of the reaction, this says nothing about whether the reaction is ultimately endothermic or exothermic.
False. In general, impurities lower the melting point of an organic compound by disrupting the crystal lattice structure.
This statement is incorrect. Reactions can be exothermic (release heat) or endothermic (absorb heat). The change in temperature depends on whether the heat is being released or absorbed during the reaction.
This is False!!! According to LeChatlier's Principle, increasing the temperature is a strees on the equilibrium. To relieve that stress the reaction will shift producing more of the substances on the side of the reaction that absorbs heat energy.
Yes, it is possible.
Melting of ice cubes is actually an endothermic process because energy is required to break the bonds between water molecules in the solid state and convert them into liquid water. Heat is absorbed from the surroundings during this phase change, causing the temperature of the ice to increase until it fully melts.
Endothermic changes are processes where energy is absorbed by the system from its surroundings. This results in a decrease in temperature in the surroundings during the process. Examples include melting ice and evaporating water.
False. Not necessarily. Do not confuse kinetics with thermodynamics. Although an enzyme as a catalyst decreases the activation energy of the reaction, this says nothing about whether the reaction is ultimately endothermic or exothermic.
exothermic. the energy flows out. exothermic. the energy flows out.
false
Yes. This is also known warm blooded. All mammals and birds are endothermic. Whales are mammals.
False, all minerals DO NOT have the same melting point
False. In general, impurities lower the melting point of an organic compound by disrupting the crystal lattice structure.
This statement is incorrect. Reactions can be exothermic (release heat) or endothermic (absorb heat). The change in temperature depends on whether the heat is being released or absorbed during the reaction.
False
False
This is False!!! According to LeChatlier's Principle, increasing the temperature is a strees on the equilibrium. To relieve that stress the reaction will shift producing more of the substances on the side of the reaction that absorbs heat energy.