To determine the state of matter of water between points 'B' and 'C' on the graph, it is essential to know what those points represent in terms of temperature and energy changes.
Since I do not have access to the graph, I would generally assess the situation based on the typical phase changes of water:
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If 'B' is below the melting point (0°C or 32°F) and 'C' is at or just above it, then water is in a solid state (ice) until it starts to melt.
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If 'B' is at the melting point (0°C or 32°F) and is transitioning to 'C', then water is in the process of melting and is in the liquid state as it transitions from solid to liquid.
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If 'B' is at or below the boiling point (100°C or 212°F) and 'C' is above it, water is in a gas state (steam) after fully transitioning from liquid.
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If 'B' is above the melting point but below the boiling point, then water exists as a liquid between those two points.
Considering typical scenarios and points in a phase change diagram:
- If you're transitioning from solid to liquid between points 'B' and 'C', the correct option would be: Liquid, because the energy increase has resulted in temperature rising above the melting point.
Choose the response that best aligns with the nature of the points 'B' and 'C' in your specific graph.