Use the period table of the elements to find the atomic number in each box. Then write the symbol for that element to solve the riddles below. This activity helps students practice using the periodic table, and lets them have fun at the same time! My students loved being "Codebreakers", and this activity made them much more fluent when using the periodic table of the elements. See if they can create their own "code" when they've finished.
There are 11 different puzzles to complete, so you can use them as daily warm ups or time fillers after taking tests:
#1: “Making bad chemistry jokes because all the good ones Argon”
#2: “What is the most important rule in chemistry? Never lick the spoon!”
#3: “What did the scientist say when he found 2 isotopes of helium? HeHe”
#4: “Have you heard the one about a chemist who was reading a book about helium? He just couldn’t put it down.”
#5: “Anyone know any jokes about sodium? NaH”
#6: “Silver walks up to gold in a bar, and says “AU, get outta here!”
#7: “I asked the guy sitting next to me if he had any sodium hypobromite, he said “NaBrO”
#8: “Why do chemists enjoy working with ammonia? Because it’s pretty basic stuff.”
#9: “What element is derived from a Norse god? Thorium”
#10: “What kind of dogs do chemists have? Laboratory retrievers”
#11: “We would like to apologize for not adding more jokes but we only update them periodically.”
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