The following diagram, not drawn to scale, represents the heating curve for a certain substance. Point A represents t = 0 minutes where the substance is a solid. 3.1 Define the term melting point. (2) Use the information in the diagram to answer the following questions 3.2 Write down: 3.2.1 Between which two letters is … Read more
2.1 Define the term element. (2) 2.2 Use the diagram and key provided to answer the following questions. 2.3 Write down the letter of the diagram that represents: 2.3.1 A substance that is solid at room temperature (1) 2.3.2 A mixture that is non-uniform (1) 2.3.3 A pure substance consisting of two or more different … Read more
Four options are provided as possible answers to the following questions. Choose the answer and write only the letter (A–D) next to the question numbers (1.1–1.10) in the ANSWER BOOK, for example 1.11 E. 1.1 Which ONE of the following is a good conductor of electricity? A Wood B Plastic C Silicon D Copper (2) … Read more
NATIONAL SENIOR CERTIFICATENASIONALE SENIOR SERTIFIKAATDATA FOR PHYSICAL SCIENCES GRADE 11PAPER 2 (CHEMISTRY)GEGEWENS VIR FISIESE WETENSKAPPE GRAAD 11VRAESTEL 2 (CHEMIE) TABLE 1: PHYSICAL CONSTANTS/TABEL 1: FISIESE KONSTANTES TABLE 2: FORMULAE/TABEL 2: FORMULES TABLE 3: THE PERIODIC TABLE OF ELEMENTS/TABEL 3: DIE PERIODIEKE TABEL VAN ELEMENTE
10.1 The mining industry contributes towards the South African economy. Gold is one of the minerals that is being mined in South Africa. 10.1.1 Write down the name of the location of the major mining activity in South Africa. (1) The following chemical reaction occurs during the final steps in the recovery process of gold. … Read more