https://padlet.com/malme6/25wjuzoloqvgxehu en-us 2023-10-09 20:00:07 UTC 2023-10-09 22:38:31 UTC hello@padlet.com https://padlet.net/icons/png/1f9d0.png malme6 https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738730538 The idea was that matter is composed of tiny particles. They named the particles "A TOMOS" which meant uncuttable or indivisible. ]]> 2023-10-09 20:08:21 UTC https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738730538 malme6 https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738744004 Proposed the law of conservation of mass. ]]> 2023-10-09 20:23:15 UTC https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738744004 malme6 https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738759261 - All matter is composed of tiny atoms 
- Atoms are unbreakable 
- Atoms of the same element are uniform and identical
- Atoms of different elements exhibit variations in both mass and properties 
- Atoms combine in rations that are whole numbers 

Some limitations they had were they could not explain why atoms of elements combine in the ratio they do. ]]> 2023-10-09 20:28:53 UTC https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738759261 malme6 https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738764165 - Thomson discovered the electron which he called "corpuscles". 
- Thomson thought that electrons were in a positive sphere which meant that they were the negatively charged particles in a spherical cloud of positive charge. 

Some of the limitations were disproved by the Gold Foil Experiment which was conducted by Ernest Rutherford. ]]> 2023-10-09 20:34:14 UTC https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738764165 malme6 https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738775527 - Rutherford conducted the Gold Foil Experiment 
- The experiment was done by shooting alpha particles at thin sheets of gold foil
- Some of those particles were deflected  
- The famous gold foil experiment led to the discovery of the atomic nucleus

Limitations: 
- All positive charges should experience repulsion 
- Didn't consider the full weight of the atom
-  Electrons in motion were expected to emit radiation continuously and lose energy, which could lead to the collapse of atoms. ]]> 2023-10-09 20:47:43 UTC https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738775527 malme6 https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738782011 - Was dicovered that the energy or light that was released by elextrons were expected to be continuous however it is not
- Electrons within a specific energy level do not emit energy themselves
- Electrons transition between energy levels by absorbing or emitting energy
-  Planck called the term 'quantum' to describe these discrete packets of energy, which is similar to Einstein's concept of photons

Limitations: 
- He could only provide/explain for atoms with only one electron for example Helium ion or Hydrogen. ]]> 2023-10-09 20:56:11 UTC https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738782011 malme6 https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738790270 - discovered that it was impossible to know neither the momentum of an electron or any subatomic particle and its exact position  
- for that he proposed the new theory which is now called the quantum theory 
- The quantum theory explains that electrons are not just particles or waves however, electron had it own properties 
- electrons are found in orbitals which we know as we move on in this unit we will use the s,d,p and f orbital which essentially will form sigma and pi bonds. ]]> 2023-10-09 21:07:42 UTC https://padlet.com/malme6/25wjuzoloqvgxehu/wish/2738790270