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Elements & Atoms

Learn about atoms, subatomic particles, electrons, and elements. Explore how elements form molecules and the significance of the periodic table in chemistry. Discover the basics of atomic structure and the role of protons, neutrons, and electrons in building matter.

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Elements & Atoms

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  1. Elements & Atoms Adapted from G.Baker www.thesciencqueen.net

  2. What is an atom? Everything in the universe is either matter or energy • Matter is anything that takes up space and has mass. • All matter is made of atoms • Atoms are the building blocks of matter, sort of how bricks are the building blocks of houses.

  3. Subatomic particles (smaller than atoms and make up atoms) • An atom has three parts: • Proton = positive • Neutron = no charge • Electron = negative • The proton & neutron are found in the center of the atom, a place called the nucleus. • The electrons orbit the nucleus in an area called the “electron cloud” Picture from http://education.jlab.org/qa/atom_model_03.gif Created by G.Baker www.thesciencequeen.net

  4. What are elements? • Elements are the alphabet to the language of molecules. • To make molecules, you must have elements. • Elements are made of atoms. While the atoms may have different weights and organization, they are all built in the same way. Information & picture from Chem4kids at http://www.chem4kids.com/files/atom_structure.html

  5. More about Elements.. • Elements are the building blocks of all matter. • The periodic table is a list of all of the elements that can build matter. It’s a little like the alphabet of chemistry. • The periodic table tells us several things…

  6. Periodic Table Atomic Number: Number of protons and it is also the number of electrons in an atom of an element. 8 O Element’s Symbol:An abbreviation for the element. Oxygen Elements Name Atomic Mass/Weight: Number of protons + neutrons. 16

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