Which of the listed substances are simple and which are complex: a) carbon dioxide; b) salt; c) copper; d) hydrogen;
| November 9, 2020 | Education
Which of the listed substances are simple and which are complex: a) carbon dioxide; b) salt; c) copper; d) hydrogen; e) aluminum; f) marble? What is the difference between these groups of substances?
Simple substances:
c) copper
d) hydrogen
e) aluminum
Complex substances:
a) carbon dioxide
b) salt
f) marble
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.