An element is a pure substance consisting of only one type of atom and cannot be broken down into simpler…

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An element is a pure substance consisting of only one type of atom and cannot be broken down into simpler substances by chemical means. A compound is a pure substance formed when two or more diffe

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Here's the solution to question 5: a) i) An element is a pure substance consisting of only one type of atom and cannot be broken down into simpler substances by chemical means. A compound is a pure substance formed when two or more different elements are chemically bonded together in a fixed ratio. ii) Elements: Iron filings, Sulphur, Hydrogen Compounds: Water, Salt Mixtures: Sea water, Air, Glass b) i) (α) Temperature: Kelvin (K) (β) Amount of substance: Mole (mol) (γ) Luminous intensity: Candela (cd) ii) Step 1: Calculate the volume of the block. V = length × width × height; V = 5 cm × 3 cm × 2 cm; V = 30 cm³; Step 2: Calculate the density using the formula ρ = m/V. ρ = 270 g30 cm³; ρ = 9 g/cm³ The density is 9 g/cm³. c) i) Three basic life processes are: Nutrition Respiration Reproduction d) Dehorning is the process of removing the horns from livestock, typically cattle, to prevent injuries to other animals or handlers.

An element is a pure substance consisting of only one type of atom and cannot be broken down into simpler substances by chemical means. A compound is a pure substance formed when two or more diffe

Answer

Step-by-step solution

Part a(i)

Part a(ii)

Part b(i)

Part b(ii)· 2 steps
$9 \text{ g/cm}^3$

Calculate the volume of the block.

Calculate the density using the formula $\rho = \frac{m}{V}$ .

Part c(i)

Part d

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An element is a pure substance consisting of only one type of atom and cannot be broken down into simpler substances by chemical means. A compound is a pure substance formed when two or more diffe

Answer

Step-by-step solution

Part a(i)

Part a(ii)

Part b(i)

Part b(ii)· 2 steps9 g/cm39 \text{ g/cm}^39 g/cm3

Calculate the volume of the block.

Calculate the density using the formula ρ=mV\rho = \frac{m}{V}ρ=Vm​.

Part c(i)

Part d

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Part b(ii)· 2 steps
$9 \text{ g/cm}^3$

Calculate the density using the formula $\rho = \frac{m}{V}$ .