Question

Chemistry

Answer 1

1. explain how different observations and experiments led to changes in the atomic model

Answer 2

2. Describe the properties and locations of protons, neutrons, and electrons in an atom.

Answer 3

start with dalton's postulates 1808 1)matter consists of small particles called atoms 2) atoms are indestructible and indivisible and 3 others you can google it

Answer 4

3. Explain what the mass number and atomic number identify about an atom.

Answer 5

then jj thompson discovered the electron in 1887 he proposed the plum pudding model of the atom which described atoms a negative charged electrons embedded in a sphere or positive charge

Answer 6

this is in the chemistry section

Answer 7

eugen goldstein discovered the proton earnest rutherford conducted the gold foil exp and concluded that atoms are mostly made up of empty space and its mass and +ve charge is focused in a central nucleus with electrons circling the nucleus in a fixed orbit

Answer 8

neils bohr proposed the atomic model based on the quantum theory in which electrons move around the nucleus in orbits and have fixed energy shells

Answer 9

1913 henry mosely prosed the existence of a particle with mass but no charge and begun the search for the neutron and in 1932 james chadwick detected the neutron by bombarding a be element with alpha particles

Answer 10

what i just did was basically go along the time line of the evolution of a scientific theory which shows that scientists can only disprove theories