Chemistry Experiments

95 experiment protocols with step-by-step instructions

Difficulty	≤15 min	≤30 min	≤60 min	60+ min
Beginner (Middle School)	1	1	1	1
Intermediate (High School)	0	1	1	1
Advanced (University)	0	1	1	1
Professional (Lab)	0	0	0	1

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Anion Identification Tests

Detecting common anions through selective chemical reactions

Identify unknown anions using specific precipitation, acid-decomposition, and redox tests.

Detecting halogen atoms in organic compounds using a copper wire flame test

Determine whether an organic compound contains halogen atoms (Cl, Br, I) using the Beilstein copper wire test.

Identifying transition metals by colored glass beads formed in a borax fusion

Identify transition metal ions by the characteristic colors they produce when fused into a borax (sodium tetraborate) glass bead.

Systematic separation of Group I–V cations using selective reagents

Identify unknown cations in a solution using the classical qualitative analysis scheme with group reagents.

Separating chlorophyll and carotenoids using paper chromatography

Separate and identify plant pigments using paper chromatography, and calculate Rf values for each pigment.

Quantitative identification of metals using spectroscope and flame

Use a spectroscope to observe and measure the emission line wavelengths of different metal ions in a flame.

Comparing water hardness by measuring soap lather formation

Determine the relative hardness of water samples by measuring the volume of soap solution required to produce a lasting lather.

Mapping indicator color changes across the full pH range

Observe how different pH indicators change color at specific pH values and understand the concept of indicator transition ranges.

Detecting starch in food samples using iodine solution

Use the iodine test to identify starch in various food samples and understand the molecular basis of the blue-black color …

Using physical and chemical properties to identify mystery powders

Apply multiple qualitative tests to identify unknown white powders, developing systematic analytical thinking skills.