Author: Anonymous

5.1 Lees die onderstaande gevallestudie deur en beantwoord die vrae wat volg:   BOTTERBLOM PLAASKOMBUIS    Janine Viljoen doen al tien jaar lank spyseniering en gebruik vleis, pampoen, spinasie, wortels en aartappels van die plaas af.  In haar winkel verkoop sy tuisgemaakte blatjang, koekies, beskuit, nageregte, vleisprodukte en ingelegte produkte.  Sy verkoop ook wolklere en wol pantoffels.  Al haar produkte word in herwinbare houers verpak en die handelsmerk van die winkel verskyn op die etiket.   Drie werkers help haar wanneer sy spyseniering doen.  Sy het ‘n goeie verhouding met hulle en pas hulle op.  Almal van hulle het verantwoordelikhede, maar wanneer hulle onseker is oor iets, vra hul haar vir bystand.   Met die winkel en spysenierings besigheid, is beplanning belangrik.  Al haar produkte word altyd betyds afgelewer en is van hoë gehalte.  Deur ‘n besigheidsvrou te wees het haar geleer om te luister en geduldig te wees.  Sy het goeie menseverhoudings.  Die belangrikste ding wat sy deur die jare geleer het is dat wie nie waag nie, sal nie wen nie.    

ESKTRA ANTWOORD SPASIE [GEBRUIK SLEGS INDIEN NODIG]

5.1.2 Verduidelik die belangrikheid van die handelsmerk op die etiket vir die besigheid. (2)

1.1.3 Lesitien is ‘n voorbeeld van ‘n …   (1)  

1.1.18 Om ‘n goeie produk te evalueeer, moet ‘n verbruiker kennis hê oor die volgende:  (1)

  VRAAG 1 – KORTVRAE (Multikeuse)     Verskeie moontlike antwoorde word op die volgende vrae gegee. Kies die regte antwoord.   

QUESTION 4 Consider the compound OF2. 4.1 Define the term chemical bond. (2) 4.2 Write down the name of the compound. (1) 4.3 How many valence electrons does O have? (1) 4.4 Draw the Lewis structure of the compound. (2) 4.5 Predict the shape of this molecule. (2) 4.6 Determine the difference in electronegativity of the elements. (2) 4.7 Predict what type of intermolecular forces would exist between the molecules? Explain your answer. (3)           [13]

QUESTION 6 Two crystalline solids, P and Q have melting points of 710oC and 723oC respectively. At 700oC, substance P conducts electricity but Q does not. At 750oC, both P and Q conduct electricity. 6.1 What can be deduced from the melting points about the relative magnitude of the forces between the particles in P and Q? (2) 6.2 Explain the difference observed in electrical conductivity between P and Q. (4) 6.3 You are told that one of the solids is Barium and the other is potassium iodide. Which is P and which is Q? (2) 6.4 What is the difference between covalent and ionic bonding? (2) 6.5 Name 5 different types of intermolecular forces (5)           [15]

QUESTION 2 Water has a high heat of vaporisation value of 40,7 kJ.mol-1. 2.1 Identify the attribute of water causing this high heat of vaporisation. (1) 2.2 Discuss the advantage of the resistance mentioned in QUESTION 2.1  for our planet and all living organisms. (3) A water molecule is polar while a carbon dioxide molecule is non- polar. 2.3 What is the difference between a polar and a non- polar molecule? (2) 2.4 What is the name of the shape given to the water molecule? (1) 2.5 Use electronegativity difference to determine the type of bond present in the carbon dioxide molecule. (2) 2.6 What is the easiest way to increase the amount of kinetic energy in a system? (2) 2.7 How does the density of a solid compare to the density of a liquid? Explain your answer in terms of intermolecular forces. (3) 2.8 What are meant by the terms ‘thermal expansion’ and ‘thermal conductivity’? (4) 2.9 What happens to the density of liquid water as the temperature rises? Briefly explain your answer. (3)           [21]

1.10 The mass (in grams) of 7,25 dm3 of O2 gas at STP is:   (2)