History of atoms by Gernina Tuesday Afalla https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie en-us 2023-03-09 08:57:42 UTC 2023-03-10 11:18:41 UTC hello@padlet.com https://padlet.net/icons/png/1f469-1f52c.png When was atom first created? afallagerninatuesday https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511677547 The ancient atomic theory was proposed in the 5th century BCE by the Greek philosophers Leucippus and Democritus and was revived in the 1st century BCE by the Roman philosopher and poet Lucretius.]]> 2023-03-10 10:49:47 UTC https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511677547 Who are the 5 scientists who discovered atoms? afallagerninatuesday https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511685802 Who are the 5 scientists who discovered atoms?
  • Democritus.
  • John Dalton.
  • Michael Faraday.
  • J. J. Thomson.
  • Robert Millikan.
  • Ernest Rutherfor

]]> 2023-03-10 10:57:16 UTC https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511685802 afallagerninatuesday https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511687340 An atom is a particle that consists of a nucleus of protons and neutrons surrounded by a cloud of electrons. It is the basic particle of the chemical elements and is distinguished by the number of protons in its atoms.]]> 2023-03-10 10:58:40 UTC https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511687340 afallagerninatuesday https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511689209 Democritus was a Greek philosopher who was the first person to use the term atom (atoms: meaning indivisible). He thought that if you take a piece of matter and divide it and continue to divide it you will eventually come to a point where you could not divide it any more.]]> 2023-03-10 11:00:40 UTC https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511689209 Rutherford's Nuclear model: 1909-1911 afallagerninatuesday https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511691622 Rutherford wanted to demonstrate how radioactive substances decayed at a constant rate and observed this by firing alpha particles at gold foil, what occurred is that some particles passed through and some were deflected. He concluded that atoms have a concentrated mass in the nucleus which consists of positive and neutral charge surrounded by electrons. ]]> 2023-03-10 11:03:22 UTC https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511691622 John Dalton afallagerninatuesday https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511697153 The first modern evidence for atoms appears in the early 1800s when British chemist John Dalton discovered that chemicals always contain whole number ratios of atoms. That's why it's H2O and not it's H20.


]]> 2023-03-10 11:09:39 UTC https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511697153 What was the original name of atom? afallagerninatuesday https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511699651 atomos

But when it comes to the name atom, we must travel back to 400 B.C. ancient Greece. The Greek word atomos, which means "uncuttable," was proposed by Democritus, a renowned philosopher. In the end, all matter could be reduced to distinct, tiny particles, or atomos, he said.]]> 2023-03-10 11:12:15 UTC https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511699651 J. J. Thomson afallagerninatuesday https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511702636 On April 30, 1897, British physicist J.J. Thomson announced his discovery that atoms were made up of smaller components. This finding revolutionized the way scientists thought about the atom and had major ramifications for the field of physics. ]]> 2023-03-10 11:15:23 UTC https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511702636 afallagerninatuesday https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511704118 2023-03-10 11:16:58 UTC https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511704118 afallagerninatuesday https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511705582 2023-03-10 11:18:37 UTC https://padlet.com/afallagerninatuesday/paqp6xxl9y5qccie/wish/2511705582