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Periodic Table & Atoms

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by

Lukas Demange

on 12 September 2012

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Transcript of Periodic Table & Atoms

By Euan, Victor & Lukas C4 - Periodic Table & Atoms Periodic Table fact n°1 Each row of the periodic table is a period and each column is a group. Periodic Table facts n°2 The periodic table starts with the very reactive metals in Group 1 and ends with unreactive gases in Group 8. Periodic Table fact n°3 The majority of the periodic table contains metals (they are found in the middle and on the left hand side of the periodic table). Periodic Table fact n°4 The relative atomic mass is the comparison of the atomic mass and of the lightest atom which is hydrogen. Periodic Table fact n°5 The order in elements start with the lowest amount of atomic mass and finishes with the highest amount of atomic mass Atomic Structure fact n°6 The atom mass is concentrated in the nucleus. The nucleus consists of protons and neutrons. The protons have a positive electric charge and the neutrons are uncharged. Atomic Structure fact n°7 Around the nucleus you find the electrons. The mass of an electron is so small that it can often be ignored. Atomic Structure fact n°8 In a atom, the number of electrons is the same as the number of protons in the nucleus. This is called the proton number. This means that the overall the total negative charge is equal to the total of positive charge. So a atom is overall uncharged. Electrons in Atoms fact n°9 The electrons are arrange into shells which can contain only a limited number of electrons. The first shell can hold up to 2 electrons. The second 2 shells can hold up to 8 electron and the 4th shell which is the last one can hold up to 18 electrons. Electrons in Atoms fact n°10 When a atom reacts, it's the electrons in their outer shells that get involved as chemical bonds break and new chemicals form. Questions! 1) What is the nucleus made out of ?
2) Where can you find the metals in the periodic table?
3) How much electrons can hold the second and the third shell in a atom?
4) What do you find around the nucleus?
5) How is the periodic table structured?
6) Which shell does react in a chemical reaction?
7) In which group do you find the most reactive metals?
8) What is the relative atomic mass?
9) How do explain the order of the atomic masses?
10) What is the proton number and is a atom charged or uncharged? Answers! 1) The nucleus is made out protons and neutrons.
2) The periodic table consist mainly of metals, they are found in the middle and on the left hand side.
3) 8 and 18.
4) You find electrons.
5) Each row of the periodic table is a period and each column is a group.
6) The outer shell reacts in a chemical reaction.
7) You find the most reactive metals in group 1.
8) The relative atomic mass is the comparison of the atomic mass and of the lightest atom which is hydrogen.
9) The order in elements start with the lowest amount of atomic mass and finishes with the highest amount of atomic mass.
10) The number of electrons is the same as the number of protons in the nucleus. The overall the total negative charge is equal to the total of positive charge. So a atom is overall uncharged. Top 10 facts 2 8 8 18 Thanks for watching :)
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