Name____________________________ Date_____________ Period____ Periodic Table Worksheet Use a Periodic table to find the information asked for below: 1.What is the atomic number of: Calcium____ Iron _____ Gold_____ Uranium_____ 2. What is the Atomic mass of: Calcium___ Iron_____ Uranium_____ Copper_____ 3. How many protons do the following have? 4. How many electrons do the following have? Calcium have____ Gold have____ Gold_______ Iron_____ Copper______ Copper_____ Iron______ Uranium_____
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Titanium Ti Atomic Number: 22 Atomic Mass: 47.867 Protons:22 Electrons:22 Neutrons:26 8. Titanium is a metal and in the family of transition metals. It belongs to group 4 of the periodic table. 9. Titanium is a silver‚ lustre‚ low in density but is a strong metal. This metal forms a passive but protective oxide coating when exposed to elevated temperatures in air but at room temperatures it resists tarnishing. The most noted chemical property of Titanium is its excellent resistant
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PRACTICE EXAMINATION QUESTIONS FOR 1.1 ATOMIC STRUCTURE (includes some questions from 1.4 Periodicity) 1. (a) Complete the following table. |Relative mass|Relative charge| Neutron||| Electron||| (2) (b) An atom has twice as many protons as‚ and four more neutrons than‚ an atom of 9Be. Deduce the symbol‚ including the mass number‚ of this atom. ..................................................................................................................................... (2) (Total
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of three with related properties. He termed these groups "triads". In all of the triads‚ the atomic mass of the second element was almost exactly the average of the atomic weights of the first and third elements. | Alexandre-Emile Béguyer de Chancourtois | The first person to notice the periodicity of the elements — similar elements seem to occur at regular intervals when they are ordered by their atomic weights. He devised an early form of periodic table‚ which he called the telluric helix. |
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Water is made up of hydrogen and oxygen‚ H20. Mixtures – A combination of two or more pure substances. Example – Blood‚ butter‚ gasoline‚ soap‚ the metal in a ring‚ the air we breathe‚ and the Earth. 2.3 – What are the Postulates of Dalton’s Atomic Theory? Five Postulates 1. All matter is made up of very tiny‚ indivisible particles‚ which Dalton called atoms. 2. All atoms of a given element have the same chemical properties. Conversely‚ atoms of different elements have different chemical
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(einsteinium) has the atomic symbol of Es. Its atomic number is 99 while its atomic mass is 252. Einsteinium is located in period 7 of the periodic table as a part of the actinide series. It has 99 protons‚ 99 electrons‚ and 153 neutrons in its atoms. The physical appearance of einsteinium is not known‚ but it is predicted to be metallic and silvery white or grey. Einsteinium is classified as a metal and is a solid at room temperature. It has a melting point of 860°C and an atomic radius of approximately
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non living thing that can exist. Atomic Structure – Particle | Symbol | Location | Charge | Mass | Proton | P | Nucleus | +1 | 1Heavy | Neutron | N | Nucleus | 0 | 1Heavy | Electron | E | Electron Shell or Orbit | -1 | 12000Light | History of the Atom – The model of the atom has changed with time. Dalton – solid shape (no subatomic particles) (indivisible particle) Rutherford - (subatomic particles) (electronic shells have a definite number of electrons) (2‚8‚18…) (electronic
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Disappearing Spoon - Chapter 1: Geography is Destiny - Chapter 1 of The Disappearing Spoon discusses the importance of an element’s location on the periodic table based on the atomic number and type of material‚ and how this specific area determines its atomic “identity” and relation to other elements. This also includes the reactivity of elements based on their electron configurations. This relates directly to what we have studied in Chapter 5 of our textbook. One example from The Disappearing
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Phosphoros‚ which means bringer of light‚ but I prefer to be called by my English name Phosphorus‚ but for easier reasons you can call me P. I am pretty much at the beginning of the periodic table‚ thanks to my atomic number of 15. Wonder what’s an atomic number? It is basically the number of protons‚ which is my positive charge‚ that I contain at my nucleus. The nucleus does not only contain protons‚ but also neutrons‚ which will be important to know of and will talk about it soon.
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The Atomic Mass of Metallo You may have noticed on the periodic table that the atomic mass of an element is usually not a whole number. That happens because of isotopes. An atom that is missing a neutron or has an extra neutron is called an isotope. They are still the same element; however‚ they are just a little different from every other atom of the same element. Most of the carbon atoms in the universe are Carbon-12‚ with 6 neutrons. A small percentage of carbon atoms are Carbon-13‚ with
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