Robitussin Cough and Cold is an over the counter cough suppressant, expectorant and nasal decongestant. This multi-symptom medication helps relieve cough and cold symptoms. Dextromethorphan HBr 10mg (cough suppressant) Guafenisen 100mg (expectorant)
Mixture; Metal; Element; Crystal. In its scientific usage, the term metal means a metallic element. An alloy is a mixture or solid solution composed of a metal and another element. But in everyday language, we often use the word metal to describe what an alloy is. That is because a mixture of metallic elements is called an alloy. Iron is a metal element. Steel is a mixture of iron with other elements such as carbon, nickel, chromium, etc. and so is an alloy. An alloy is a mixture of either pure or relatively pure chemical elements, forming an impure substance retaining the characteristics of a metal. Alloy constituents are usually measured by mass.
For instance water is always two atoms of hydrogen to 1 atom of oxygen. A mixture does not have a specific ratio of the substances which make it up. Alloys can be in any proportion, and are therefore, mixtures, despite the fact that in a metal alloy the metal atoms are covalently bonded by pi bonds.pdate: pisgahchemist: Alloys can be in any proportion, and are therefore, mixtures. But think of the different crystalline phases of brass, which only exist over different and distinct ranges of Cu:Zn ratios, with heterogeneous mixtures in between (see Cu:Zn phase diagram).