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The Periodic Table. Chemistry Learning outcome: 2) I can use the periodic table to Find electrons, protons, neutrons Find metals & non-metals Find alkali, alkali earth metals, halogens and noble gas families Know the relative reactivity of each family
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. Chemistry Learning outcome: 2) I can use the periodic table to Find electrons, protons, neutrons Find metals & non-metals Find alkali, alkali earth metals, halogens and noble gas families Know the relative reactivity of each family Draw an arrow to show how the reactivity of metals increase Draw an arrow to show how the reactivity of non-metals increase Find the seven diatomic elements
2a) Find the number of electrons, protons, and neutrons for an element • # of electrons (neutral atom) = atomic number • # of protons = atomic number • # of neutrons = atomic mass – atomic number
Example: Bromine (Br) • # of electrons = 35 • # of protons = 35 • # of neutrons = 80 – 35 = 45 Try: Krypton, Kr
2 c&d) Families and Groups (columns): Alkali Metals: highly reactive (sodium)
2 c&d) Families and Groups (columns): Alkaline Earth Metals: moderately reactive
2 c&d) Families and Groups (columns): Halogens: highly reactive
2 c&d) Families and Groups (columns): Noble Gases: not very reactive
Families and Groups (columns): Transition Metals: not very reactive
Summary of reactivity of the families Alkali metals: highly reactive (sodium) especially in water Alkaline Earth Metals: moderately reactive (calcium) Halogens: highly reactive (chlorine) Noble gases: stable (helium)
2 g) 7 Diatomic ElementsH, N, O, F, Cl, Br, I The seven starts with N = element number 7
Assignments Chemistry version of the game BINGO