IB Chemistry Summary- By Paul Li & Silvia Riggioni TABLE OF CONTENTS Table of Contents............................................................................................................................................................ 1 Atomic Theory................................................................................................................................................................ 3 The Electromagnetic Spectrum.............................................
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"invention" of the Periodic Table. In that table‚ Mendeleev arranges elements according to their molecular mass into rows and columns. And amazingly‚ those in the same columns have similar properties. However‚ at the time Mendeleev invented the table‚ there is a few elements. So he named "missing" elements (in other words‚ cells) in the table and predicted their properties... Periodicity‚ in terms of Chemistry is the properties of elements that‚ if you know where it is in the Periodic Table‚ you can actually
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Triple Science Homework (Pg 197) Copy and complete using the words below: Discovered‚ Gaps‚ Mendeleev‚ Mass‚ Periodic‚ Properties‚ Newlands The chemical elements can be arranged in a Periodic table. Within the table‚ elements with similar Mass are placed together in groups. Like other chemists‚ such as Newlands‚ Mendeleev listed elements in order of Properties but he realised that he need to leave Gaps for elements that had not yet been Discovered. Why did Newlands’ fellow scientists
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Density/g cm-3 | 2.2 | 2.33 | 6.99 | 11.34 | % Error | 9.54% | 15.87% | 9.44% | 16.97% | I noted that the further you move down the group on the periodic table the % error of the calculations becomes generally more. Discussion Part one: Of the experiment demonstrates that a very useful Pease of information about the elements on the periodic table can be determent with a very easy experiment. The present error can be brought down by making sure water stays at an constant temperature‚ the mass
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build all the materials about you. Some look similar‚ but others look unlike anything else. In this experiment‚ you will describe the physical properties of elements in a laboratory display and determine the location of elements on a blank periodic table. You will also examine different types of matter and classify them according to your observations and knowledge. A Physical Properties of Elements Metals are elements that are usually shiny or have a metallic luster. They are usually good
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position of Hydrogen in modern periodic table. (1) 3. The next higher homologue of ethanol is ________ (1) 4. State true or false. The minimum number of carbon atoms in a ketone molecule is two. (1) 5. How does the number of valence electrons vary on moving from left to right in a period? (1) 6. The horizontal rows in a periodic table are called as _________
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Mendeleev is best known as the chemist who created the periodic table of elements. He arranged the 63 elements known at the time into a Periodic Table based on atomic mass. This was then published in Principles of Chemistry in 1869. His first Periodic Table was put together by arranging the elements in ascending order of atomic weight and grouping them by the similarity of properties. He even predicted that other elements existed‚ and left space open for them. Mendeleev also provided for variance
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P. 2 Purpose: To investigate the periodic variation of density in Group 4A elements. Background: When the elements are arranged in order of increasing atomic number‚ they exhibit periodic recurrence of properties. Elements in the same group in the periodic table tend to have similar physical and chemical properties. These similarities are due‚ in large part‚ to similarities among the electron configurations of the elements in a group. You can find periodic trends in certain properties‚ such
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electrons orbit the nuclei of atoms in particular patterns. You will discover these patterns (and how electrons sometimes act like passengers boarding a bus) with the Electron Configuration Gizmo™. To begin‚ check that Lithium is selected on the PERIODIC TABLE tab. 1. The atomic number is equal to the number of protons in an atom. How many protons are in a lithium atom? ________3_____ 2. A neutral atom has the same number of electrons and protons. How many electrons are in a neutral lithium
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We Are Family – Families of the Periodic Table The periodic table is a table of the chemical elements in which the elements are arranged by order of atomic number in such a way that the periodic properties (chemical periodicity) of the elements are made clear. The standard form of the table includes periods (horizontal rows in the periodic table) and groups (vertical columns). Elements in groups have some similar properties to each other. As a chemist‚ it is important to have a basic grasp of the
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