An object is made from a material that is hard, shiny, and can be hammered into thin sheets. Which of these is another likely property of the material?
1) it dissolves in water 2)I has a low boiling point. 3) it is a good conductor heat. 4) it’s density is less than that of water

3) it is a good conductor heat.

Explanation:

An object is made from a material that is hard, shiny, and can be hammered into thin sheets. The aforementioned properties are those of a metal. Therefore, the other property of a metal is that, it is a good conductor of heat and even electricity because there valence (outer) electrons are delocalized. Some examples of chemical elements that are metals are iron, gold, sodium, silver, copper etc.

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.

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