#Red cabbage apple juice ph baking soda plus#

Have each group be in charge of using cabbage juice to test just one of the samples and share data as a class.Ĭabbage Juice Rainbow Worksheet Answers Visit [ to print or download.Īll substances are divided into three categories - acids, bases and neutral substances. Make numerous water and vinegar samples so that each group has a sample in which to put the Alka-Seltzer. 10 small jars, beakers or containers (500 ml size, 1 per group)Īlternate Setup: To reduce cost and preparation time, make one sample of each solution and have the students rotate through the samples (instead of each group having each sample).Fine mesh strainer (or funnel and a few coffee filters).Part 2: Preparation of red cabbage juice for the entire class to share (10 groups): Cabbage juice for the entire class to share (see materials list, below).Copies of the Red Cabbage Indicator Color Chart (one per group, or one color overhead projector transparency for the entire class to view).Copies of the Cabbage Juice Rainbow Data Sheet, one per student.Measuring pH of Common Substances Data Sheet, and Measuring pH of Common Substances Worksheet, one per student.pH Values of Common Substances attachment (or as an overhead projector transparency for the entire class to view).Purchase litmus paper from a chemistry supply company (such as Fisher) or a well-equipped hardware store. Students need to use the comparison chart included with the litmus container, so obtain enough dispensers for each group to have one. 30 1.5-inch strips of wide-range (0-14 pH) litmus paper and comparison chart.

#Red cabbage apple juice ph baking soda plus#

Plus the specific items below, for Part 1 or 2.

Baking soda (about 2 tablespoons in 1 cup distilled water).

Household liquid bleach (about 2 tablespoons).

Salt water (2 tablespoons of this mix: 3 tablespoons salt in 1 cup distilled water).

Distilled water (2 samples of about 2 tablespoons).

Tomato or apple juice (pure) (about 2 tablespoons).Vinegar (2 samples of about 2 tablespoons each).Masking tape and pen (for labeling cups).cups or Dixie cups to hold test materials Standard units are used to measure and describe physical quantities such as weight, time, temperature, and volume. (Boundary: At this grade level, mass and weight are not distinguished, and no attempt is made to define the unseen particles or explain the atomic-scale mechanism of evaporation and condensation.) Measurements of a variety of properties can be used to identify materials.

Make observations and measurements to produce data to serve as the basis for evidence for an explanation of a phenomenon.Īlignment agreement: Thanks for your feedback! This activity focuses on the following Three Dimensional Learning aspects of NGSS: Make observations and measurements to identify materials based on their properties.Ĭlick to view other curriculum aligned to this Performance Expectation Use their knowledge of pH to describe some effects of acid rain.Explain why engineers measure the pH of substances with which they are working.Calculate and interpret the averages of pH trials.Describe some general characteristics of acidic, basic and neutral solutions.Using the basic concept of acids and bases, engineers are able to create a lot of things that contribute to the health, happiness and safety of society.Īfter this activity, students should be able to: Civil engineers design water and waste treatment plants for towns and factories. Chemical engineers design everything from pharmaceuticals to soap to glue to bubble gum. 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.