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Bellringer

Bellringer. 1. Which four elements are the most common in the human body? 2. What do you notice about these four elements?. 1 Minute. 4 Minutes. Time’s Up!. 5. 2. 1. 3 Minutes. 2 Minutes. 9. 8. 7. 6. Intro to Chemistry. Matter:. is any substance that has mass and occupies space.

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Bellringer

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  1. Bellringer 1. Which four elements are the most common in the human body? 2. What do you notice about these four elements? 1 Minute 4 Minutes Time’s Up! 5 2 1 3 Minutes 2 Minutes 9 8 7 6

  2. Intro to Chemistry

  3. Matter: is any substance that has mass and occupies space

  4. nitrogen chlorine silver gold Element: mercury A substance that can not be broken down into simpler chemical substances. helium oxygen hydrogen niobium neodymium sodium Carbon

  5. electron - electron - proton + Atom: - smallest particle of an element that has the characteristics of that element. basic building blocks of ALL matter. Everything is made of atoms electron - nucleus neutron

  6. What an Atom Looks Like

  7. Parts of an Atom: nucleus –center of an atom composed of neutron and protons Electronic cloud - area round the nucleus filled with electrons. protons – positive charge neutrons – neutral charge electrons – negative charge # of protons = # of electrons

  8. Organizing Elements The periodic table is an arrangement of the elements according to similarities in their chemical and physical properties. Elements listed by number of protons in the element Mendeleev In 1869,Dmitri Ivanovitch Mendeléev created the first accepted version of the periodic table.

  9. Elements

  10. Atomic Number and Atomic Mass atomic number = number of protrons = number of electrons number of protons + number of neutrons =ATOMIC MASS

  11. How to read element information… Atomic Number Element Symbol Mass Number

  12. Elements - Symbols Carbon = C Oxygen = O Nitrogen = N Hydrogen = H

  13. Elements with Funny Names Element Symbol Latin Name cuprum aurum plumbum Hydrargyrum kalium argentum natrium stannum Copper Cu Gold Au Lead Pb Mercury Hg Potassium K Silver Ag Sodium Na Tin Sn

  14. Silicon (Si) Silicon Carbide (SiC) Compound Molecule two or more elements two or more atoms bonded together

  15. Element Oxygen – O -a gas Hydrogen – H -a gas Compound H2O - Water - a liquid 2 atoms of hydrogen and 1 atom of oxygen Element vs Compound

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