The electron was discovered by researchers working with cathode ray tubes.
<span>Grasslands making up half of the African continent</span>
Kinetic Energy<span>. </span>Energy<span> is transferred from one object to another when a reaction takes place. </span>Energy<span> comes in many forms and can be transferred from one object to another as heat, light, or motion, to name a few. ... This </span>energy<span> would be in the form of motion, with the person lifting the blue ball to a higher level.</span>
B. a combustion reaction involves a hydrocarbon burning with oxygen gas to produce water and carbon dioxide.
C. this is an endothermic reaction since ΔH would be positive.
3. I am pretty sure it is referring to the activation energy which is a characteristic all chemical reaction have and in a combustion reaction the spark gets the reaction over the activation energy.
4. K₂O(s)+CO₂(g)⇒K₂CO₃(s)+energy
The energy level of the reactants is higher than the energy level of the products (you can see this with energy diagrams).
5. 2HgO(s)+energy⇒2Hg(l)+O₂(g)
the energy levels of the products is higher than the energy level of the reactants. (this can also be seen with energy diagrams)
When the object is partially submerged
