2. Atoms

3. The atom is the smallest piece of matter in the universe. They are made of a nucleus and an electron cloud.

4. the founding fathers of atoms Neil bore, john Dalton, j.j. Thomson, and Ernest Rutherford

5. there has been four model versions of the atom. Neil bore=yellow, john Dalton=red, j. j. Thomson=blue, and Ernest Rutherford=white

6. Atoms are in everything around you, it is you. Atoms are the building blocks of our universe.

7. Atoms define us so we aren`t different from each other

8. electron 1.a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.

9. neutron 1. a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen

10. Proton 1.a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign

11. Joseph John Thomson was born in Cheetham Hill, a suburb of Manchester on December 18, 1856. He enrolled at Owens College, Manchester, in 1870, and in 1876 entered Trinity College, Cambridge as a minor scholar.

12. was a British chemist and physicist who attended the Royal College of Chemistry, London, and worked on spectroscopy. He was a pioneer of vacuum tubes, inventing the Crookes tube. Crookes was the inventor of the Crookes radiometer, [1] which today is made and sold as a novelty itemRoyal College of Chemistryspectroscopyvacuum tubesCrookes tubeCrookes radiometer [1]

13. In 1800, Dalton became a secretary of the Manchester Literary and Philosophical Society, and in the following year he orally presented an important series of papers, entitled "Experimental Essays" on the constitution of mixed gases; on the pressure of steam and other vapours at different temperatures, both in a vacuum and in air; on evaporation; and on the thermal expansion of gases. These four essays were published in the Memoirs of the Lit & Phil in 1802. pressurevapoursvacuumair evaporationthermal expansion

14. Ernest Rutherford was born on August 30, 1871, in Nelson, New Zealand, the fourth child and second son in a family of seven sons and five daughters. His father James Rutherford, a Scottish wheelwright, immigrated to New Zealand with Ernest's grandfather and the whole family in 1842.

15. An atomic orbital is a mathematical function that describes the wave- like behavior of either one electron or a pair of electrons in an atom. [1] This function can be used to calculate the probability of finding any electron of an atom in any specific region around the atom's nucleus. mathematical functionelectronatom [1] atom's nucleus

16. Atomic number the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

17. Isotope each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element

18. mass number the total number of protons and neutrons in a nucleus

19. Element each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number, i.e., the number of protons in the nuclei of its atoms

20. The end