what properties of sugar change when it is dissolved in water? what properties stay the same
Wrong
When sugar (sucrose) dissolves in water, some properties change while others remain the same. Let's explore both categories:
Properties that change when sugar is dissolved in water:
1. Solubility: Sugar is insoluble in pure water, but it dissolves readily when mixed with water. This means that the solubility property of sugar changes as it forms a solution with water.
2. State of matter: Crystalline sugar is a solid, whereas when it dissolves in water, it becomes a homogenous liquid solution.
3. Density: The density of a sugar-water solution is different from that of pure water, as the dissolved sugar increases the mass and volume of the solution.
Properties that remain the same when sugar is dissolved in water:
1. Chemical composition: Dissolving sugar in water does not change its chemical composition. The sugar molecules remain the same, consisting of carbon, hydrogen, and oxygen atoms.
2. Taste: Sugar maintains its sweet taste when it dissolves in water, making the solution taste sweet.
3. Melting point and boiling point: The melting point and boiling point of sugar-water solutions remain similar to those of pure water.
To determine these changes and similarities, you can conduct experiments. First, observe the solubility of sugar by adding it to water, noting how it dissolves completely. You can test the density using a hydrometer to measure the sugar-water solution's specific gravity. Additionally, you can taste the solution to verify the sweetness. To confirm that the chemical composition remains the same, conduct a simple evaporation test by heating the solution to separate the water, leaving behind the sugar crystals.