Publication No. 12761
Kitchen Chemistry Liquids
Student Laboratory Kit
Materials Included In Kit
Acetone, 200 mL
Additional Materials Required
The iodine starch indicator solution may be irritating to skin and eyes. The acetone is slightly toxic and flammable. Avoid open flames or anything hot. Wear chemical splash goggles, chemical-resistant gloves and a chemical-resistant apron. Remind students to wash their hands thoroughly with soap and water before leaving the laboratory. Please review current Safety Data Sheets for additional safety, handling and disposal information.
Please consult your current Flinn Scientific Catalog/Reference Manual for general guidelines and specific procedures, and review all federal, state and local regulations that may apply, before proceeding. Iodine starch indicator solution may be disposed of according to Flinn Suggested Disposal Method #12a. Acetone may be disposed of according to Flinn Suggested Disposal Method #18a. Hydrogen peroxide may be disposed of according to Flinn Suggested Disposal Method #22a. Vinegar may be disposed of according to Flinn Suggested Disposal Method #26b and baking soda may be disposed of according to Flinn Suggested Disposal Method #26a. Waste solutions from this activity may be disposed of according to Flinn Suggested Disposal Method #26b.
Correlation to Next Generation Science Standards (NGSS)†
Science & Engineering PracticesAsking questions and defining problems
Planning and carrying out investigations
Analyzing and interpreting data
Constructing explanations and designing solutions
Disciplinary Core IdeasMS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
HS-PS1.A: Structure and Properties of Matter
HS-PS1.B: Chemical Reactions
Energy and matter
MS-PS1-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
Answers to Questions
Kitchen Chemistry Liquids
Become a forensic scientist! Using some basic chemical and physical properties, identify four liquids commonly found in the kitchen and use the results to determine the identity of an unknown liquid.
It is important in many real-life situations to have a test to determine the identity of a substance, from forensic tests that determine the identity of a poison to environmental tests that determine pollutants and their sources. In this kit, liquids that are commonly found in the kitchen or around the home, hydrogen peroxide, vinegar, oil and acetone will be tested. Hydrogen peroxide, because it is a powerful oxidizer, is used as a disinfectant. Vinegar is an acidic solution used in cooking and as a condiment. Oil is used in many applications including keeping food from sticking to nonfood surfaces. Acetone may be used as a solvent to remove fingernail polish.
The purpose of this activity is to identify four common, clear liquids using items commonly found in the kitchen. A known standard will be given for comparison and matched against the test results of an unknown.
Acetone, 6 mL
Avoid skin contact with the iodine starch indicator. It will stain skin and clothing and is irritating to skin and eyes. Hydrogen peroxide is a skin and eye irritant; avoid all tissue contact. Acetone is flammable and toxic by ingestion or inhalation. Do not smell this material. Avoid working near open flames or anything hot. Wear chemical splash goggles, chemical-resistant gloves and a chemical-resistant apron. Wash hands thoroughly with soap and water before leaving the laboratory.
Student Worksheet PDF