Homologous Series of Alkanes – Word Search Activity

Homologous Series of Alkanes – Word Search Activity

A differentiated puzzle set to support terminology and topic review in organic chemistry (Grades 8–11) 🧪🧩

This word search activity is designed to help students consolidate their understanding of alkanes and the structure of homologous series in a fun and engaging way. Instead of traditional worksheets, this format offers a quiet, focused task that can be used for reinforcement, revision, or simply as a meaningful time filler.

You’ll find a total of 10 word search puzzles, each in two variants (A/B), and five levels of difficulty. The level of challenge increases with the size of the word grid and the direction of the hidden terms. The puzzles include key vocabulary from the topic of alkanes and are ideal for supporting students' familiarity with hydrocarbon structures and related terminology.

Included in this resource:

• 10 unique word search puzzles × 2 variants (A and B)

• 5 levels of differentiation (marked with 1 to 5 stars)

• Terms appear forward only or forward and backward (depending on level)

• All solutions included

• Colorful and black-and-white versions for flexible printing

• Self-created chemistry-themed clipart for visual support

How I use it in class:
I like to use these puzzles at the end of a topic, during quiet work phases, or even as an option for early finishers. The A/B versions are helpful when students sit next to each other – it prevents simple copying but keeps the task structure consistent.

The varying difficulty levels also allow you to match tasks to students’ needs without having to explain separate instructions. Whether students are revisiting the basics of alkanes or preparing for more advanced organic chemistry, this puzzle format keeps them engaged and focused.

A practical, ready-to-use activity that brings a bit of variety into the chemistry classroom – and helps build confidence with technical terms.

Have fun exploring the world of science with your students!
Warmly,
Lernfitness

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