adgetteAnazainagon adgetteAnazainagon

09-12-2016
Chemistry

contestada

Help please!
Which of the following is true for compounds?

A.They can consist of no more than two types of elements.
B. They can be created by chemical reactions.
C. They all have the same properties regardless of their elemental composition.
D.They can be separated into their component elements through physical means.

Respuesta :

JcAlmighty JcAlmighty

09-12-2016

The answer is B. They can be created by chemical reactions.

A compound is a substance composed of two or more different atoms chemically bonded to one another, for example, water (H₂O) consists of 2 atoms of hydrogen (H) and 1 atom of oxygen (O), so it is the compound. Water is created by chemical reaction:

2H₂ + O₂ → 2H₂O

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