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Date 4 Lab Section 1 Provide a term that matches each description below. a Horizontal row on the periodic table period b Test that involves holding a sample in a flame c Insoluble solid formed during a reaction in solution d Charged form of an atom e Column on the periodic table f States that the properties of elements repeat in a recurring pattem when ordered by increasing atomic number 2 The ions of six metals are investigated in this experiment. Name the six metals. 3 when performing a flame test, which element is often present as an impurity? How can the presence of this element as an impurity be distinguished from its presence as a primary component of a solution? 4 The lons of three halogens are investigated in this experiment. Name the three halogens 5: Lab 4 Elements and the Periodic Table Solution 1.a) In periodic table each horizontal line (left to right ) termed as PERIODS or ROWS. b) Test in which sample is holding the sample in flame is called FLAME TEST. By colour of flame appear , particular metal is indentified . c.insoluble solid formed during the reaction is callrd PRECIPITATE. and reaction is called precipitation reaction and the chemical which is responsible for formation of solid is called precipitant.this precipitate is formed generally in doble displacement reaction. d).charges form of an atom is generally caused IONS. the charge can be positive and can be negative . If the charged on ion is positive it is cation and if the charged on ion is negative it is called anion.The metals form cations and nom metals form anions. e) The columns( on moving up to down ) on the periodic table is called is also known as GROUPS or FAMILIES. f) it is called periodic law. the properties of element repeating periodically when arranged in a increasing atomic no. .

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How many dance steps would the square have?and,Construct a multiplication table of all of the squre\'s dance stepes.this group is referred to as D4 pleaseÂ Â do the construct Solution Main types of square dances: US and Canada 1.Traditional square dance 2.Modern Western square dance (MWSD) England 1.Playford 2.Folk dance 3.Ceilidhs Ireland 1.ceili 2.set dancing Scotland 1.scottish country dance While the standard formation for a square dance is four couples in a square, there are many variations on the theme. These dances show some examples: >Ninepins: a square with one extra person in the middle >Winter Solstice: a square with one extra couple in the middle >Hexitation: a square with two couples in each of the Head positions. >Twelve Reel: a square with three people on each side, normally a man with a lady on either side of him. Modern choreography also includes dances which morph from one form to another. There are contra dances and four couple longways sets which turn into a square dance part of the way through the dance and then back to the original formation. Grid Squares are dances where the squares are arranged in a grid, sets carefully aligned across the room and up and down the room. The calls move dancers from one square to another in intricate patterns. .

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