Chemical engineers design everything from pharmaceuticals to soap to glue to bubble gum. Check out the resources below to get started.Ĭlick on the image below or on the link for tons more awesome science projects.Measuring pH is fundamental science that is used by many engineers: Environmental and chemical engineers examine pollutant substances to find out whether they are acid or base to know what kind of reactions they cause. You can also easily turn your cabbage science experiment into a fantastic presentation along with your hypothesis. This is the first step to diving deeper into science with kiddos and making connections! SCIENCE FAIR PROJECTS What do you think will happen if_? I think the_ will_if_. The first step in the scientific method is asking a question and developing a hypothesis. You can read about incorporating the scientific method here, including more information on the independent and dependent variables. This cabbage PH science experiment is a fantastic opportunity to use the scientific method and start a journal using the free mini pack above. Simple chemistry is cool! Check out 65 chemistry experiments for kids for more ideas! USE THE SCIENTIFIC METHOD Kids will have a blast testing a variety of kitchen pantry ingredients with their cabbage juice pH indicator science project! You may even need to buy more red cabbage the next time you go to the store. If you dissolve them in water or the indicator, you can also test the pH of solids, like sugar or salt.ĭIY: Make your own pH strips by soaking coffee filters in the cabbage juice and hang to dry, cut in strips! To extend the activity, use pH test strips to determine the exact pH of each liquid. Test other liquids to compare whether they are acids or bases. What else can you do with lemons? We have a couple of fun ideas for exploring fun chemistry with this fruit! Squeeze lemon juice into one of the jars. Here are a few acids and bases to test… 1. Remember, red color is acidic and green color is basic. This red cabbage experiment also makes a terrific science fair project!īefore your kids start testing each one, have them make predictions about what color change they will see. You can find even more solutions to test out! Depending on your kid’s interest levels and needs, you could turn this into a huge science experiment. Adult supervision is recommended at all times. Please take care when mixing different items into your cabbage pH indicator. This experiment is set up so that you add some of the acid or base to the jar of red cabbage juice, and observe the color change. We have a few common acids and bases for you to start with. Now it’s time to test the pH of different items. Plus it gives you a few more items to test once you have made your red cabbage pH indicator! Click here to get your printable science experiment worksheets! TIP: Here’s a simple pH scale for kids with a little extra information. Redder when mixed with an acid and greener when mixed with a base. This pigment changes color when mixed with an acid or a base. Red cabbage contains anthocyanin, which is a water-soluble pigment. Why can red cabbage be used as an indicator to test pH? Good indicators give a visible sign, usually a color change, when they come into contact with acids or bases. An acid is usually recognized as something with a sour or sharp taste. Baking soda is an example of a base.Īn indicator is one way to work out the pH of a solution. If you ask the kids about what types of things around the house are acidic, they might say vinegar or lemons. Acids have a pH lower than 7 and bases have a higher pH higher than 7. The pH scale is a way to measure the strength of an acid or base solution, and is numbered from 0 to 14.ĭistilled water has a pH of 7, and is considered a neutral solution.
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