Question

Наведіть приклад реакції, що характеризують хімічні властивості маталів за поданими схемами . Дайте назви продуктам реакцій :а) метал + вода ..б)метал + кислота ..

Answer 1

Ca+H2O→CaO (кальцій оксид) Mg+ H2SO4→MgSO4+H2 (магній сульфат і водень)

Answer 2

Chemical Reactions of Metals with Water

When metals react with water, they can undergo different chemical reactions depending on the reactivity of the metal. Here are two examples of reactions that characterize the chemical properties of metals:

a) Metal + Water Reaction: - When highly reactive metals like sodium (Na) or potassium (K) react with water, they undergo a vigorous reaction, producing metal hydroxide and hydrogen gas. - For example, when sodium reacts with water, it forms sodium hydroxide (NaOH) and hydrogen gas (H2): ``` 2Na + 2H2O -> 2NaOH + H2 ``` - This reaction is highly exothermic and can be quite violent, with the evolution of hydrogen gas and the formation of a metal hydroxide.

b) Metal + Acid Reaction: - Metals can also react with acids to form metal salts and hydrogen gas. - For example, when zinc (Zn) reacts with hydrochloric acid (HCl), it forms zinc chloride (ZnCl2) and hydrogen gas (H2): ``` Zn + 2HCl -> ZnCl2 + H2 ``` - This reaction is also exothermic, and the metal displaces hydrogen from the acid to form a metal salt.

These reactions demonstrate the chemical properties of metals, specifically their ability to react with water and acids to form metal salts and hydrogen gas. The reactivity of metals with water and acids varies depending on the specific metal and its position in the reactivity series.

Please note that the examples provided above are general reactions and may not represent the specific behavior of all metals. The reactivity of metals can vary, and some metals may not react with water or acids under normal conditions.

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