Question

name: lalla lester daily written reflection how are different substances different? think about the food - mixture investigations you did in the previous lesson. write about two different substances you investigated. make a drawing if it helps you explain your thinking. label your drawing. modeling matter—lesson

Explanation:

To answer this, we can choose two substances like salt (sodium chloride) and sugar (sucrose). In the food - mixture investigations, salt and sugar differ in taste (salt is salty, sugar is sweet), solubility rate (sugar dissolves faster in water at room temperature sometimes, but this can vary with conditions), and chemical composition (salt is an ionic compound, sugar is a covalent organic compound). For the drawing, we can draw two beakers with water, one with salt added and one with sugar added, labeling the solute (salt/sugar) and solvent (water), and maybe showing the particles (ions for salt, molecules for sugar) if we want to be more detailed.

Answer:

One substance I investigated was salt (sodium chloride) and another was sugar (sucrose). Salt and sugar differ in taste (salt is salty, sugar is sweet), solubility characteristics (sugar often dissolves more readily in water at room temperature in some cases), and chemical structure (salt is ionic, sugar is a covalent carbohydrate). For the drawing, I would draw two beakers with water, label one with “Salt + Water” showing $Na^+$ and $Cl^-$ ions dispersed, and the other with “Sugar + Water” showing $C_{12}H_{22}O_{11}$ molecules dispersed.