Final answer:
Heating to a constant weight in chemistry refers to a process in which a sample is heated until it reaches a constant weight. This technique is commonly used in analytical chemistry to determine the composition or purity of a substance.
Step-by-step explanation:
Heating to a constant weight in chemistry refers to a process in which a sample is heated until it reaches a constant weight. This is done to remove any moisture or volatile impurities present in the sample. By heating the sample to a constant weight, we can ensure that we are measuring the pure substance without any impurities. This technique is commonly used in analytical chemistry to determine the composition or purity of a substance.