Trilogy – Chemistry – CHAPTER 1 – Atomic structure and the Periodic Table What is an element? Particle Relative charge Relative mass Where in atom Proton Electron Neutron Write down all you know about the periodic table: What is a compound? Element Proton Electron Neutron Lithium Argon What is a mixture? In a balanced equation, the ________ of each type of _______ on each side of the equation must be ____________. Balance the following equations: Mg + O2  MgO CH4 + O2  CO2 + H2O Mg + HCl  MgCl2 + H2 K + Cl2  KCl How many atoms of each element are there in: C2H5OH ? Element Compound Formula Equation Filtration Crystallisation Distillation Chromatography Electron Proton Neutron Properties of metals: Properties of non-metals: Show how sodium bonds to chlorine: Separating mixtures – mixtures can be separated by physical processes that do not involve chemical reactions. Explain how the following processes work: Filtration: Crystallising: Distillation: Chromatography: KEY WORDS: ASSESSMENT:

Trilogy – Chemistry – CHAPTER 1 – Atomic structure and the Periodic Table (cont) What are the elements in group 0? What do group 0 elements have in common? Why do group 0 elements exist as single atoms? Trends in group 0 – As you go down the group what happens to: The boiling point: The melting point: The density: Group 1 – The ____________ metals Group 1 metals get _______ reactive as you go down the group. Explain why group 1 metals get more reactive down the group: Properties: Li, Na, K are all _________ _________ than water, so they float on water. Gp1 metals all react vigorously with water to make a metal hydroxide (an alkali) and hydrogen: Na + H2O  __________ + _________ When group 1 elements react they ________ _______ ___________ to form a __________ ion with a full outer shell. Group 1 ions all have a ______ charge. Group 1 metals react with non-metals to form __________ compounds. These compounds are _________ solids that dissolve in water to form a colourless solution. Na + Cl2  __________ (remember to balance) K + O2  _________ Group 7 – The _________________ What are the elements of group 7? Properties and reactions: Halogens are ___________. Exist as _________ of atoms eg Cl2 React __________ with group _____ and group 2 metals to make salts: K + Cl2  (remember to balance) Reactivity _______________ down the group. If chlorine is bubbled through potassium bromide solution, a ______________ reaction occurs. The ____________ colour of bromine is seen. This happens because chlorine is ________ _________ than bromine, so it displaces it from its compound. Cl2 + KBr  _______ + ________ Group 7 trends: As you go down the group: The colour ______ ______________ The boiling point ____________, fluorine and chlorine are _________, bromine is a ________ and iodine is a ________, at room temperature. Draw the electronic structures for: Sodium: Argon: Fluorine: KEY WORDS: Unreactive Reactive Properties Alkali Density Ion Displacement ASSESSMENT: