Alexis is observing a reaction that is taking place in an unsealed glass beaker. is alexis's experimental setup an example of a closed, open, or isolated system? explain your answer in complete sentences.

It is an open system.

- Closed system is a physical system which allows to exchange energy with the surrounding but not allows to exchange matter. 

- Isolated system does not exchange either matter or energy with the   external environment.

- Open system is a type of physical system which allows to exchange both matter and energy with the surroundings.

Hence, Alex's experimental setup which has an unsealed beaker is an open system.

the term hydride is commonly named after binary compounds that hydrogen forms with other elements of the periodic table. hydride compounds in general form with almost any element, except a few noble gases. the trends and properties vary according to the type of intermolecular force that bonds the elements together, the temperature, its molecular masses, and other components. hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. the three major groups are covalent, ionic, and metallic hydrides. formally, hydride is known as the negative ion of a hydrogen, h-, also called a hydride ion. because of this negative charge, hydrides have reducing, or basic properties. its special characteristics will be further discussed.

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