Question

1. choose the best answer. which law is also one of daltons postulates? law of conservation of mass law of reciprocal proportions law of matter and elements law of chemical reactions 4) choose the correct scientific notation. which model was used by dalton to describe his atomic theory? nuclear model clay model plum pudding model billiard ball model

Explanation:

1. Dalton's postulates include the idea that atoms are indivisible and indestructible, which is related to the law of conservation of mass. The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction, consistent with Dalton's view of atoms being the fundamental, un - changing units in chemical processes.
2. Dalton's atomic theory described atoms as solid, indivisible spheres, similar to billiard balls. The nuclear model came later with the discovery of the nucleus by Rutherford, the plum - pudding model was Thomson's model, and there is no such well - known "clay model" in atomic theory context.

Answer:

1. law of conservation of mass
2. billiard ball model