1. a. b. Zinc is a metal with the chemical formula of Zn. It has many...

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1. a. b. Zinc is a metal with the chemical formula of Zn. It has many applications such as used in alloys, brass, nickel silver and aluminium solder. Justify the reason of physical properties for Zn below. 1. il. iii. i. ii. High melting and boiling point iii. Good conductors of electricity and heat Malleable and ductile The surface area and height of a piece of wood are 1.9 × 10³ dm² and 3.5 × 10¹ dm, respectively. The piece of wood has a mass of 7.5 x 10¹ kg. [1 mark] Calculate the density of wood in g/cm³ [2 marks] Would the piece of wood float in water? [2 marks] Change the units of surface area and height into cm² and cm, respectively. [2 marks] [2 marks] [1 mark] 1. a. b. Zinc is a metal with the chemical formula of Zn. It has many applications such as used in alloys, brass, nickel silver and aluminium solder. Justify the reason of physical properties for Zn below. 1. il. iii. i. ii. High melting and boiling point iii. Good conductors of electricity and heat Malleable and ductile The surface area and height of a piece of wood are 1.9 × 10³ dm² and 3.5 × 10¹ dm, respectively. The piece of wood has a mass of 7.5 x 10¹ kg. [1 mark] Calculate the density of wood in g/cm³ [2 marks] Would the piece of wood float in water? [2 marks] Change the units of surface area and height into cm² and cm, respectively. [2 marks] [2 marks] [1 mark]