PPT-Atoms and Molecules The smallest particle of an element

Examples Hydrogen Carbon Chlorine Titanium Atom Democritus 450 BC If you kept cutting a substance in half forever eventually you would end up with an uncuttable particle John Dalton 1800. Chapter 2 BLB 12. th. Expectations. Recognize important steps in the discovery of the atom and its structure.. Work with isotopes.. Learn about the periodic table.. Differentiate between molecular and ionic compounds.. Who first thought of the atom?. Democritus. Leucippus. Democritus and Leucippus. ~440 BC. They were the first philosophers that believed that atoms existed.. They thought that you could cut something in half , over and over, until you eventually get to a particle so small that it can no longer be cut In half.. Molecules. Elements. Compounds. Atom. The smallest particle that can still be identified as the matter it came from.. Atoms cannot be created or destroyed.. Consists of Protons (+), Electrons (-), and Neutrons (N).. & IONS. Dalton: atomic theory. Atomic Structure &. Weights. P. Table. Molecules & Compounds. CMPDS: formula, name. Molecule/Cmpd. Cmpd: metal + nonmetal. transfer of e-. metal lose & nonmetal gains . What’s all matter made of?. ATOMS!. CAN YOU TELL ME WHAT TYPE OF ELEMENT THIS IS?. ATOMS!. CAN YOU TELL ME WHAT TYPE OF ELEMENT THIS IS? . BERYLLIUM. the only atom with FOUR PROTONS(+)=ATOMIC NUMBER: 4. Matter. Has Mass=. The Amount . of Matter. in an Object. “Stuff” that . Everything. is made of!. Made of . Atoms. Has Volume=. Takes Up . Space. Don’t Sweat the Small Stuff!. What is the “Small Stuff” anyway?. Atoms. . are the smallest unit of matter. . Matter. . is anything that has mass and takes up space. . A . ball is matter, water is matter, even the air you breathe is matter!. What is an atom. ? (cont.). Atoms and Isotopes. What you need to know about Atoms . and Isotopes:. Matter. Molecules. Elements. Chemical reaction. Periodic Table. The Atom. Parts of an atom. Isotopes. Unstable isotopes. Scientists and discoveries. Atoms and Isotopes. What you need to know about Atoms . and Isotopes:. Matter. Molecules. Elements. Chemical reaction. Periodic Table. The Atom. Parts of an atom. Isotopes. Unstable isotopes. Scientists and discoveries. Moles and Mass. The . molar mass . gives us the relationship between the . number of moles . and the . mass of an element or compound. .. We can . use the molar mass . to . calculate . the . mass. or . and Ions. Jim Geiger. Cem 151. Atomic Theory of Matter. The theory of atoms:. Original to the Greeks. Leuccipus, Democritus and Lucretius. (Aristotle thought they were nuts). He believed that one could divide up a piece of matter an infinite number of times, that is, one never came up with a piece of matter that could not be further divided. He suggested that everything in the world was made up of some combination of four elements: earth, fire, water, and air. The elements were acted upon by the two forces of gravity and levity. Gravity was the tendency for earth and water to sink, and levity the tendency for air and fire to rise.. For Example: If you have a piece of gold and cut it into smaller and . smaller pieces, . you would eventually reach a point where you couldn’t cut the gold up any smaller. That smallest piece would be an atom of gold.. What are Atoms?. Atoms. are the building blocks of matter made up of Protons, Neutrons & Electrons.. Inside the Atom. A . proton. is a positively charged (+) particle in the center of the atom. DE Chemistry. Dr. Walker. Timeline. B.C.. 400 B.C. . Demokritos. and . Leucippos. . use the term ". atomos. ” . 1500's. Georg Bauer: systematic metallurgy. Paracelsus: medicinal application of minerals.