In this Mystery, students are introduced to acids, a group of substances with a reputation for being reactive. In the activity, students develop their own test for acids, then apply it to several common household substances in order to identify which contain acids.
This probably isn’t the first time you’ve heard the word ‘acid’. What does this word make you think of?
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These readings will get students thinking about how acids help shape the world around us. Free with registration on ReadWorks, a nonprofit committed to providing teachers with research-proven, Common-Core-aligned readings.
Pigments in purple cabbage and black beans change color in acid. This list from Thought.Co. suggests other natural color-changing pigments to experiment with.
Here are three of our favorites:
This is one of our favorite activities. You start with an ordinary chicken egg. Leave it in vinegar overnight & the acid dissolves the eggshell. You end up with a egg that’s held together by the flexible membrane inside the shell.
You’ll find detailed instructions on how to make a “naked egg” on the Exploratorium’s Science of Cooking website.
You’ve seen that adding baking soda to acid makes it fizz. Here are two activities that use that fizz to make tasty treats.
New Zealand’s Science Kids explain you how to make fizzy lemonade.
The folks at Planet Science explain how to make a candy treat called sherbet. Watch out! This candy zaps your tongue with fizz.
Who knew science could be so tasty?