Curated OER
Changing Planet: Ocean Acidification - the Chemistry is Less than Basic!
A video and laboratory investigation are highlights to this lesson plan on acidification of ocean water due to increased atmospheric carbon dioxide. Using bromothymol blue (BTB) as an indicator, pupils analyze the amount of carbon...
Curated OER
2002 U.S. National Chemistry Olympiad National Exam - Part I
As to be expected from the American Chemical Society Olympiad Examinations Task Force, this 60-question test tops the charts in terms of excellence. It consists entirely of multiple choice questions designed to assess a year's worth of...
Curated OER
Not So Neutral Views
Students explore ways to use indicators to distinguish between acids and bases. They conduct an experiment to model and discuss the harmful effect of acid rain in our living and non-living environment.
Curated OER
Cabbage Juice Lab
In this acid and base worksheet, students use cabbage juice as an indicator to test the pH of various solutions. Students complete a table with the solution name, the color red and blue litmus paper turns, the color the cabbage juice...
Curated OER
Classifying Chemicals
In this acids and bases worksheet, students identify the strengths of acids and bases and indicate the concentration of hydronium and hydroxide ions. They determine if given chemical formulas are acids or bases, they find...
Curated OER
Soil Acidity and Leaching
Learners are introduced to the concept of acids and bases and arouse curiosity about acids and bases in daily life. They are introduced to the measurement of soil pH. Pupils are introduced to the effect of soil pH on nutrient cycling...
Teach Engineering
Basically Acidic Ink
If you don't want to drink red cabbage juice, here's another use for it—a decoder! Using vinegar and ammonia-based window cleaning liquids as invisible inks, scholars create designs in the second lesson of the series. Red cabbage juice...
Teach Engineering
Red Cabbage Chemistry
Using the natural pH indicator of red cabbage juice, groups determine the pH of different everyday liquids. As they work, pupils gain an understanding of pH that may help deal with contaminants in the water supply.
Royal Society of Chemistry
pH 4: Activity
Sometimes playing games in class isn't a bad thing. Science sleuths evaluate and calculate pH and pOH with an online resource. They then manipulate concentration information and relate it during a series of puzzles.
Virginia Department of Education
Equilibrium and Le Chatelier’s Principle
The best part of learning about equilibrium is that nothing changes. Young chemists observe four demonstrations during this lesson: equilibrium in a saturated solution, equilibrium with an acid-base indicator, equilibrium with cobalt...
Curated OER
pH Pre-Lab: Acids and Bases
In this chemistry lab, students determine whether or not their saliva is acidic, basic, or neutral. After completing their test, they answer 6 analysis questions.
Curated OER
Household Chemicals
In this chemicals worksheet, students review how to read chemical labels, define an acid-base indicator, and decide which way strong acids can be dangerous. This worksheet has 15 short answer and 20 fill in the blank questions.
Curated OER
Investigating Buffers
Students investigate buffers and their behaviors when used with acids and bases. In this buffers lesson plan, students use a pH meter and create buffered acidic and basic solutions. To each of the buffered solutions students add strong...
Curated OER
Acids And Bases -- Universal Indicator
Eighth graders design and perform an experiment that uses a Universal Indicator Color Guide to measure the strength of acids and bases. They also determine happens when acids and bases are mixed together. They decide which of three...
Curated OER
Acids/Bases and Buffers
In this acids, bases and buffers worksheet, students define terms, solve problems such as calculating the pH of solutions and the molarity of solutions and they write balanced equations of neutralization reactions.
Curated OER
Invisible Ink
Students wxplore acids and indicators by watching a demostration in which "magic" ink appears. They duplicate the demonstration by writing magic messages using phenolphthalein solution and painting the message with vinegar to show it.
Curated OER
Cabbage Juice Indicator
Students experiment with household solutions and classify them as a base or acid. In this exploratory lesson students complete a lab where they test products to see if they are an acid or a base.
Serendip
A Scientific Investigation – What Types of Food Contain Starch and Protein?
You are what you eat, as they say! Are you more starch or more protein? Young scholars use their knowledge of each component to test different foods for their content. Using multiple indicators, individuals describe the protein and...
Curated OER
Acid-Base Indicator Paper
Middle schoolers are able to prepare and use pH indicators in paper form. They find out the color of the indicator paper plus test solution may change with time. Students use red cabbage to use for the indicator.
Curated OER
Indicators
In this indicators instructional activity, students write equilibrium equations, determine the pH at the transition point of the indicator, and calculate the value of pKa. This instructional activity has 7 problems to solve.
Curated OER
The Colors of Chemistry
Young scholars investigate the acidity and alkalinity of common household products in an experiment. They use red cabbage juice and litmus paper to show the difference between strong acids and bases as they work with vinegar, dish...
Curated OER
Acid, Base, or Salt?
In this acids and bases instructional activity, students read about the differences between acids and bases and then complete a table comparing the characteristics of both. Then students determine if the given statements describe an...
Curated OER
Chemistry Worksheet 3
In this chemistry worksheet, students determine the pH of several given solutions. Students label indicated substances as either acids or bases according to Bronsted-Lowry theory.
Curated OER
Measuring pH
Students perform an experiment which will illustrate how to measure the approximate pH of chemicals in water using a pH indicator. They understand that a pH indicator is a chemical that changes color when it comes in contact with acids...