When butene decolourises bromine solution, it indicates that an addition reaction has occurred. The double bond in butene breaks, and the bromine molecules add across the two carbon atoms that were originally part of the double bond. This forms a colorless dibromide compound, causing the bromine solution to lose its characteristic orange color.
A precipitation reaction takes place when silver nitrate reacts with hydrochloric acid, forming a white precipitate of silver chloride. This reaction can be represented by the chemical equation: AgNO3 + HCl -> AgCl + HNO3.
To determine if a chemical reaction takes place when two substances are mixed, you can look for evidence such as color change, formation of precipitate, gas production, change in temperature, and the evolution of light or sound. These observable changes indicate a chemical transformation has occurred.
A chemical reaction that has taken place is likely a precipitation reaction. The formation of a yellow solid suggests the creation of a new compound that is insoluble in the solution and precipitates out.
single replacement
Light-dependent reactions use the excited electrons produced by the light-capturing events that are used to produce ATP.
it is a chemical reaction because u cant change it back into dough or flower, eggs, oil etc ingredents that is in it
The reaction is likely an endothermic reaction. In an endothermic reaction, heat is absorbed from the surroundings, causing a decrease in temperature.
Sexual reproduction
human hunting
Division.
When butene decolourises bromine solution, it indicates that an addition reaction has occurred. The double bond in butene breaks, and the bromine molecules add across the two carbon atoms that were originally part of the double bond. This forms a colorless dibromide compound, causing the bromine solution to lose its characteristic orange color.
A precipitation reaction takes place when silver nitrate reacts with hydrochloric acid, forming a white precipitate of silver chloride. This reaction can be represented by the chemical equation: AgNO3 + HCl -> AgCl + HNO3.
The oxidation of the iron in a car door into iron oxide is a chemical change. The reaction equation is 4 Fe + 3 O2 = 2 Fe2O3
10,000,000 and up.
a chemical change take a place
O2