What type of change is the spoiling of food?
Chemical
Physical
Mechanical
Thermal
Spoiling of food is a chemical change.
In an electric cell while in use, the change in energy is from:
(a) electrical to mechanical
(b) electrical to chemical
(c) chemical to mechanical
(d) chemical to electrical
State the colour change when white silver chloride is exposed to sunlight. What type of chemical reaction is this?
Why spoiling food is not a desirable change?
What change in colour is observed when white silver chloride is left exposed to sunlight state the type of chemical reaction in this change