Question

В каждом ряду выберите лишнее и укажите причину 1. HCl, Mg, C. 2. NaCl, CaCO3, BaO.

Answer 1

1. HCl - сложное вещество (лишнее)
    Mg - простое вещество
    C - простое вещество

2. NaCl - соль
    CaCO3 - соль
    BaO - оксид (лишнее)

Answer 2

1. HCl, Mg, C

The odd one out in this group is C (carbon). HCl and Mg are both chemical compounds, while carbon (C) is an element. Carbon is not a compound like HCl or Mg.

2. NaCl, CaCO3, BaO

The odd one out in this group is CaCO3 (calcium carbonate). NaCl and BaO are both ionic compounds, while CaCO3 is a covalent compound. NaCl and BaO consist of ions held together by ionic bonds, whereas CaCO3 consists of covalent bonds between carbon, oxygen, and calcium atoms.