Question

1. what are the main ideas in dalton's atomic theory?

2. Give two drawbacks of Dalton's atomic theory ?


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Answer 1

Answer:

1)The first part of his theory states that all matter is made of atoms, which are indivisible. The second part of the theory says all atoms of a given element are identical in mass and properties. The third part says compounds are combinations of two or more different types of atoms.

2)Dalton's atomic theory suffered from the following drawbacks: (i) It failed to explain how and why atoms of different elements combine together to form a new 'group of atoms'. (ii) It failed to explain how atoms of different elements differ from each other i.e the structure of atom was unknown.

Answer 2

Answer:

1. Everything is composed of atoms, which are the indivisible building blocks of matter and cannot be destroyed. All atoms of an element are identical. The atoms of different elements vary in size and mass.
2. Dalton's atomic theory suffered from the following drawbacks
3. (i) It failed to explain how and why atoms of different elements combine together to form a new 'group of atoms'.
4. (ii) It failed to explain how atoms of different elements differ from each other i.e the structure of atom was unknown.