The formation of white precipitate indicates a chemical reaction occurred in the beaker that resulted in the precipitation of a solid product from the solution.
Use the following equation: delta G = delta H - T*deltaS. A reaction is spontaneous if delta G is negative. A reaction will always be spontaneous (under any temperature) only if the change in enthalpy (delta H) is negative and the change in entropy (delta S) is positive. If this is not the case, the reaction will only be spontaneous (negative delta G) for a range of temperatures (or could be always non-spontaneous)
When CO2 reacts with limewater (calcium hydroxide), the solution turns milky due to the formation of calcium carbonate, which is insoluble and precipitates out. This indicates a chemical reaction has taken place as a new substance with different properties has formed.
A change in state. It can always be changed back into its origanal state. (Ex. Melting, boiling, evaporation, freezing) Other ex. melting butter, shredding paper, mowing the grass, or liquid water to ice
Rioting and looting took place. Apex
A product is a substance formed after a chemical reaction from the reactants involved in the process. It is the result of the reaction and can be a single compound or a mixture of compounds that were not present before the reaction took place.
the beaker would feel hot
The compound deposited on the inside of the beaker is likely a precipitate formed from a chemical reaction that took place in the beaker. It could be a solid formed from the mixing of two solutions that reacted with each other. Further analysis would be needed to determine the specific compound.
The white solid is likely a precipitate formed from a chemical reaction between the clear and blue liquids. It may have separated out due to being insoluble in the mixture. Analyzing the properties of the white solid could help identify the reaction that took place.
caramelization :D
taulom
A chemical reaction took place creating a new element.
Use the following equation: delta G = delta H - T*deltaS. A reaction is spontaneous if delta G is negative. A reaction will always be spontaneous (under any temperature) only if the change in enthalpy (delta H) is negative and the change in entropy (delta S) is positive. If this is not the case, the reaction will only be spontaneous (negative delta G) for a range of temperatures (or could be always non-spontaneous)
I think that it would be that killing Duncan was something hard for him that he took it to heart since it wasn't so easy to do.
Conduct the experiment in two insulated beakers and insert a thermometer in both. To each separate beaker add the same substance, for example, limestone and then add vinegar to one beaker and a strong acid such as HCl to the other. Measure the time and temperature of both. You should see a much greater and quicker rise in temperature with the strong acid.
Evidence of a chemical reaction includes the formation of a new substance with different properties, changes in color, the release of gas or heat, or the formation of a precipitate. Additionally, changes in mass due to the rearrangement of atoms in the reactants can also indicate a chemical reaction has occurred.
For a chemical change to occur, there must be a chemical reaction. A chemical reaction would be either endothermic (uses energy, mostly heat), or exothermic (produces energy, again mostly heat). Any change in temperature of the reactants, as measured by a thermometer, will tell you not only ifa chemical reaction occurred, but also which kind of chemical reaction. No temperature change usually indicates that no reaction has occurred, a decrease in temperature would indicate an endothermic reaction, while an increase in temperature would indicate an exothermic reaction.
There is no indication on the Indian calender that any festivals that took place on June 10, 1987. It does however indicate that on June 9, 1987 Vaikasi Vishaka took place.