theamandawhite
04.02.2020 •
Chemistry
Why do theories and model change over time?
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Ответ:
The first model of the atom was developed by JJ Thomson in 1904, who thought that atoms were composed purely of negatively charged electrons. This model was known as the 'plum pudding' model
Ответ:
Steel: metallic
Propane: covalent
Calcium chloride: ionic
Water: covalent
Explanation: