Question

1.CaCo3, 2.CaO, 3.Ca(OH)2,4.H2Co3 а)основа б)кислота ,в)оксид, г)сіль

Answer 1

САСО3-СОЛЬ САО-ОКСИД СА(ОН)2-основа Н2СО3-КИСЛОТА(угольная)

Answer 2

2-оксид 
3 -основание 
4-кислота 
1 - соль

Answer 3

1. CaCO3: - CaCO3 is the chemical formula for calcium carbonate. - It is a compound that consists of one calcium atom (Ca), one carbon atom (C), and three oxygen atoms (O). - Calcium carbonate is commonly found in nature as limestone, chalk, and marble. - It is used in various industries, including construction, agriculture, and pharmaceuticals. - Calcium carbonate can act as a base when it reacts with an acid, forming a salt and water.

2. CaO: - CaO is the chemical formula for calcium oxide, also known as quicklime or burnt lime. - It is a compound that consists of one calcium atom (Ca) and one oxygen atom (O). - Calcium oxide is a white, caustic, alkaline crystalline solid. - It is commonly used in construction, agriculture, and chemical industries. - Calcium oxide can act as a base when it reacts with an acid, forming a salt and water.

3. Ca(OH)2: - Ca(OH)2 is the chemical formula for calcium hydroxide, also known as slaked lime or hydrated lime. - It is a compound that consists of one calcium atom (Ca), two hydrogen atoms (H), and two oxygen atoms (O). - Calcium hydroxide is a white, crystalline solid with low solubility in water. - It is commonly used in construction, agriculture, and as a pH regulator in various industries. - Calcium hydroxide can act as a base when it reacts with an acid, forming a salt and water.

4. H2CO3: - H2CO3 is the chemical formula for carbonic acid. - It is a weak acid that consists of two hydrogen atoms (H), one carbon atom (C), and three oxygen atoms (O). - Carbonic acid is formed when carbon dioxide (CO2) dissolves in water. - It plays a role in the carbon cycle and is involved in the formation of caves and stalactites. - Carbonic acid can dissociate into bicarbonate ions (HCO3-) and hydrogen ions (H+).

a) Основа (base): - A base is a substance that can accept or donate a pair of electrons. - Bases have a pH greater than 7 and can neutralize acids. - Calcium hydroxide (Ca(OH)2) and calcium oxide (CaO) are examples of bases. - When a base reacts with an acid, it forms a salt and water.

б) Кислота (acid): - An acid is a substance that can donate or release hydrogen ions (H+). - Acids have a pH less than 7 and can neutralize bases. - Carbonic acid (H2CO3) is an example of an acid. - When an acid reacts with a base, it forms a salt and water.

в) Оксид (oxide): - An oxide is a compound that contains oxygen and another element. - Calcium oxide (CaO) is an example of an oxide. - Oxides can have different properties depending on the elements they are composed of. - Calcium oxide is a basic oxide and can react with water to form calcium hydroxide.

г) Соль (salt): - A salt is a compound formed when an acid reacts with a base. - Salts are composed of positive ions (cations) and negative ions (anions). - When calcium carbonate (CaCO3) reacts with an acid, it forms a salt and water. - The specific salt formed depends on the acid used in the reaction.

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