University:
Eastern Kentucky University
Course:
CHE 111 | General Chemistry
Academic year:

2022
Views:

301

Pages:

2
Author:

folclord7m

Lab Report: Ionic and Covalent Bonds Purpose Explore the properties of chemical substances that can be used to identify the types of bonds in a chemical substance using a laboratory procedure. Hypothesis If a substance is solid at room temperature and has a crystalline structure, dissolves easily in water and conducts electricity, then it probably has ionic bonds otherwise it probably has covalent bonds. Variables Independent Variable: different substances Dependent Variable: state of matter, appearance, texture, crystalline structure, solubility in water, conductivity, type of bonds (covalent or ionic) Controlled Variables: amount of substance, water stirring duration Materials           five 25 mL beakers spoon stirring rod 10 mL graduated cylinder distilled water in a wash bottle conductivity apparatus 5 mL oil 2 g cornstarch 2 g sodium chloride 2 g sodium bicarbonate Procedure (Repeat steps 1–4 for each of the following: 5 mL of oil and 2g each of cornstarch, sodium chloride, and sodium bicarbonate.) 1. 2. 3. 4. Data Note State and Appearance Determine Solubility in Water Determine Conductivity Determine Whether the Substances Are Ionic or Covalent. Analysis Different substances have different bonds (covalent and ionic) This was represented in the data the substances shared some qualities but the main rules applied (conductivity in water). Conclusion 1. You can identify the types of bonds contained in a substance by comparing and contrasting properties common in ionic and/or covalent compounds. 2. If a substance is solid at room temperature, has a crystalline structure, dissolves easily in water and conducts electricity, then it most likely has ionic bonds, otherwise it most likely has covalent bonds.