Complete the table, explain the phase change from solid to liquid, and state the boiling point of water.

Question

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Question 1: Complete the table below during the experiment.

State of Matter	Observation	Temperature
Solid (ice)	Hard, opaque, fixed shape	$0^\circ\text{C}$
Liquid (water)	Clear, fluid, takes shape of container	e.g., $25^\circ\text{C}$
Gas (steam)	Invisible gas, visible mist above boiling water	$100^\circ\text{C}$

Question 2: Explain how ice changed from a solid into a liquid.

When ice absorbs heat energy, its particles gain kinetic energy and vibrate more vigorously.
At the melting point ( $0^\circ\text{C}$ ), the particles have enough energy to overcome some of the strong intermolecular forces holding them in a fixed lattice structure.
This allows the particles to move past each other, changing from a solid to a liquid state.
Question 2 (as numbered on the paper): What boiling point of water was recorded during the experiment?
Based on the typical properties of water under standard atmospheric pressure, the boiling point of water is \boxed{\text{}100^\circ\text{C}}}.

Question 4: State ONE precautionary measure that should be taken into consideration when conducting this investigation.
A key precautionary measure is to wear safety goggles to protect the eyes from splashes or steam.

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