Liquid water is more dense than ice becauseSelect one:a.A liquid H2O molecule has more mass than an ice H2O molecule.b.A chemical change occurs when ice melts that causes the mass of water to increasec.there are a greater number of H2O molecules per unit of volume in liquid water than ice.d.When ice melts there is an increase in the amount of water molecule
Question
Liquid water is more dense than ice becauseSelect one:a.A liquid H2O molecule has more mass than an ice H2O molecule.b.A chemical change occurs when ice melts that causes the mass of water to increasec.there are a greater number of H2O molecules per unit of volume in liquid water than ice.d.When ice melts there is an increase in the amount of water molecule
Solution
The correct answer is c. There are a greater number of H2O molecules per unit of volume in liquid water than ice.
Here's why:
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Water molecules in a liquid state are closer together than they are in a solid state (ice). This is due to the unique properties of water.
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When water freezes into ice, the water molecules form a crystalline structure that maintains a significant amount of space between each molecule. This space is what makes ice less dense than liquid water.
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When ice melts into liquid water, the crystalline structure collapses, allowing the water molecules to move closer together, increasing the density.
So, it's not about the mass of individual molecules or a chemical change, it's about how closely the molecules are packed together.
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