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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
No, chemical reactions are not the only reactions that may involve absorption of energy. A physical change like heating water to vapor is also endothermic.
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.
false
No. The phase change requires adding heat, so melting ice cubes is an endothermic reaction.
Its where heat is taken in in a reaction eg making a cake is an endothermic reaction as heat is taken in to start it ;)
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
False, all minerals DO NOT have the same melting point
Yes. This is also known warm blooded. All mammals and birds are endothermic. Whales are mammals.
False
False
No, chemical reactions are not the only reactions that may involve absorption of energy. A physical change like heating water to vapor is also endothermic.
False
False
true or false