A The continents were once joined together
Explanation:
All the continents were once together making a huge one called Pangea.
The thermodynamic barrier that must be overcome before products are formed in spontaneous reaction is activation energy.
The activation energy is the maximum amount of extra energy that is required by a reacting molecules to get converted into product. It is the minimum energy that is required or needed to activate or energize molecules or atoms.
It is needed in the reaction so that reactants can move together and overcome forces of repulsion and start bond breaking.
Reactant is the substance that takes part in and that undergoes change during a reaction.
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False. <span>Breaking Bonds → Energy Absorbed
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You have to put energy into a molecule to break its chemical bonds. The amount needed is called the<span> bond energy</span><span>. If you think about it, molecules don't spontaneously break.
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Answer:
Water isn't wet by itself, but it makes other materials wet when it sticks to the surface of them.
