Which substance is a pure substance? cereal silver jelly bean shampoo

The correct answer is B, Silver

Explanation:

A pure substance refers to one substance that has a defined composition or has only one type of molecule, which often implies the substance has not been mixed with other substances or elements and therefore remains pure. In these cases, also substances preserve certain properties including having specific boiling points and conductivity. Examples of pure substances include iron, water, salt, etc. From the examples presented, cereal, jelly beans, and shampoo are not pure substances because they contain a mixture of multiple elements, for example, the shampoo contains water, cleansers, plant scents, preservatives, etc. However, in the case of silver, this can be classified as a pure substance because it has not been altered or mix with other and therefore it is composed by only one type of molecules and preserves properties that exclusively belong to silver which makes it a pure substance.

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u