Because the compounds have the desired properties, effects and reactions.
Chemists use compounds because elements in group 1 and 7 are highly reactive and unstable in their pure form. Compounds provide a stable and safer way to handle these elements while still utilizing their chemical properties. Additionally, compounds allow chemists to control and study the interactions between different elements more effectively.
Scientists use symbols to represent elements and compounds. The symbols of a chemical element are abbreviations that are used to denote a chemical element. Typically, they are one or two-letters long with the first letter (only) capitalised; temporary names are three-letters long. !
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Forensic science laboratories use analytical chemists to identify unknown substances in criminal investigations. Pharmaceutical companies employ analytical chemists to analyze and characterize drug compounds. Environmental testing companies hire analytical chemists to identify pollutants in air, water, and soil samples. Food and beverage companies utilize analytical chemists to ensure product safety and quality by identifying unknown compounds. Chemical manufacturing plants employ analytical chemists to monitor and analyze process streams for impurities or contaminants.
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Chemists use various kinds of technology. They use spectrometers to measure color changes. They also use computer simulation programs to avoid dangerous reactions, and lasers for precise reactions.
Chemists use the periodic table to classify elements based on their chemical properties and behaviors. Elements are arranged in the table according to their atomic number and electron configuration, which helps determine similarities and patterns in their reactivity and bonding characteristics. This classification system helps chemists predict how elements will interact in chemical reactions.
When you go to some European countries you have to use a euro intead of a dollar.
For the list of elements see this link.A list of compounds is impossible because more than 60 000 000 substances are know. Look in a catalog of of chemicals for laboratory use.
Chemists study the composition, properties, and interactions of matter. They investigate how different substances react with each other, the structure of molecules, and the characteristics of various elements. Chemists use this knowledge to develop new materials, understand chemical processes, and improve existing products.
Atomic symbols are used to represent elements, a negative (-) and a psoitive (+) represent electrons and protons, respectively. Chemicals or other compounds are often written as a combination of atomic symbols with subscripts to indicate the presence of multiple atoms.
Transition elements, because of their ability to form coloured compounds due to d-d electronic transitions.