Chem atomic theory

Question 1

Daltons atomic theory

Answer 1

All matter is made up of very small particles called atom
All atoms are indivisible they cannot be broken down into smaller particles

Question 2

Cathode rays

Answer 2

Streams of negatively charged particles called electrons travel in straight lines from cathode to anode are deflected by electric and magnetic fields sufficient energy to move a paddle wheel

Question 3

Energy level

Answer 3

Fixed energy value that an electron in an atom may have

Question 4

Ground state

Answer 4

The electrons occupy the lowest available energy levels

Question 5

Exited state

Answer 5

Electrons occupy higher energy levels than those available in the ground state

Question 6

Heisenbergs uncertainty principle

Answer 6

It is impossible to measure the velocity and position of an electron at the same time

Question 7

Orbital

Answer 7

Region in space within there is a high probability of finding an electron

Question 8

Sublevel

Answer 8

Subdivision of a main energy level and consists of one or more orbitals of the same energy