Easy DIY Science Experiment for Kids with Acid Base Indicator!!!

Ryan's World
20 May 202013:31
EducationalLearning
32 Likes 10 Comments

TLDRIn this educational video, the host explores the acidity or basicity of various household liquids using a universal indicator. From orange juice to baking soda, they test a range of items, including soda, milk, vinegar, lemon juice, and toothpaste, to determine their pH levels. The experiment reveals that most tested items are acidic, with vinegar and lemon juice being the strongest. The video also demonstrates a baking soda and lemon juice reaction, showing that lemon can replace vinegar in certain cases. It encourages viewers to conduct their own experiments with different substances to understand the chemistry behind everyday items.

Takeaways
  • 🧪 The video is about testing household liquids to determine if they are acidic or basic using a universal indicator.
  • 🔍 The universal indicator is a tool that changes color to indicate the pH level of a substance, with colors correlating to specific pH ranges.
  • 🍊 Orange juice was tested and found to be acidic with a pH level around 3.
  • 🧂 Baking soda was thought to be basic, but when tested, it was not a liquid and required water to dissolve, resulting in a neutral pH level.
  • 💧 Pure water is generally neutral, but the tested water may have been slightly acidic due to air exposure.
  • 🥤 Soda was tested and found to be acidic, similar to orange juice and lemonade.
  • 🍋 When discussing 'tongue,' it was humorously associated with 'fantastic,' indicating acidity, which was confirmed with a pH level of 8.
  • 🥛 Milk was tested and found to be slightly acidic with a pH level between 4 and 5.
  • 🍾 Vinegar was confirmed to be very acidic with a pH level of 2, making it one of the most acidic substances tested.
  • 🍋 Lemon juice was also very acidic with a pH level of 2, similar to vinegar.
  • 🦷 Toothpaste was tested and found to be basic with a pH level around 8, which is beneficial for neutralizing acids in the mouth.
  • 🧪 An experiment substituting vinegar with lemon juice in a baking soda reaction was successful, showing that lemon juice can also cause a reaction with baking soda.
Q & A

  • What is the main purpose of the video?

    -The main purpose of the video is to test various household liquids to determine whether they are acidic or basic using a universal indicator.

  • What is a universal indicator and how is it used in the video?

    -A universal indicator is a tool that changes color when dipped in different liquids, indicating their pH level. In the video, it is used to test the acidity or basicity of various household items.

  • What is the pH scale range for acidic substances according to the video?

    -The pH scale range for acidic substances is from 1 to 6.

  • What is the pH scale range for basic substances?

    -The pH scale range for basic substances is from 8 to 14.

  • What color on the universal indicator represents a neutral pH of 7?

    -The color green on the universal indicator represents a neutral pH of 7.

  • What was the first liquid tested in the video and what was its pH level?

    -The first liquid tested was orange juice, and it had a pH level of 3, indicating it is acidic.

  • What was the pH level of baking soda when it was tested?

    -The pH level of baking soda was not explicitly stated, but it was indicated to be basic.

  • Why did the water tested in the video not show a clear pH level?

    -The water tested was likely affected by exposure to air, which might have altered its pH level from the neutral pH of pure water.

  • What is the chemical compound of water and what are its symbols?

    -The chemical compound of water is H2O, represented by the symbols H for hydrogen and O for oxygen.

  • What was the pH level of soda tested in the video?

    -The pH level of soda was not explicitly stated, but it was indicated to be the same as orange juice, suggesting it is acidic.

  • What is the relationship between having a tummyache and the pH level of substances in the video?

    -Having a tummyache might indicate that the stomach is too acidic. Consuming basic substances can help neutralize the acid and alleviate discomfort.

  • What was the pH level of milk and what does it indicate about milk?

    -The pH level of milk was between 4 and 5, indicating that it is acidic.

  • What was the pH level of vinegar and how does it compare to other tested substances?

    -The pH level of vinegar was 2, making it one of the most acidic substances tested in the video.

  • What was the pH level of lemon juice and how does it compare to vinegar?

    -The pH level of lemon juice was 2, which is as acidic as vinegar.

  • What was the pH level of toothpaste and what does it indicate about toothpaste?

    -The pH level of toothpaste was 8, indicating that it is basic, which helps neutralize the acid in the mouth.

  • Why is toothpaste typically basic and how does it benefit oral health?

    -Toothpaste is typically basic to help neutralize the acid in the mouth, which can prevent tooth decay and maintain oral health.

  • What experiment was suggested at the end of the video to replace vinegar with?

    -The experiment suggested at the end of the video was to replace vinegar with lemon juice to see if it would still produce a reaction with baking soda.

  • What was the result of the experiment using lemon juice instead of vinegar?

    -The result of the experiment using lemon juice instead of vinegar showed that it worked, although it was a little less effective than vinegar.

  • What other household items were suggested for testing in the video?

    -Other household items suggested for testing in the video included honey, ketchup, and mustard.

Outlines
00:00
🧪 Testing Household Liquids' Acidity

In this segment, the video introduces an experiment to determine the acidity or basicity of various household liquids using a universal indicator. The process involves dipping the indicator into different liquids and observing the color changes, which indicate the pH level. The video covers testing orange juice, baking soda, and water, with orange juice being acidic, baking soda turning out to be basic, and water showing a neutral pH due to exposure to air. The experiment is educational and interactive, engaging viewers in guessing the pH of each substance.

05:01
🍋 Exploring the pH of Tongue, Milk, and Vinegar

This paragraph continues the experiment by testing the pH levels of the human tongue, milk, and vinegar. The tongue is revealed to be acidic, which is related to tummy aches and the need for basic substances to neutralize the excess acid. Milk is found to be slightly acidic, while vinegar is confirmed to be strongly acidic, with a pH close to 2. The video also includes a bonus question about the chemical composition of water, which is correctly identified as H2O by a participant named Ryan.

10:03
🍋 Comparing Lemon Juice and Vinegar's Acidity

In the final paragraph, the experiment concludes with testing lemon juice and toothpaste for their pH levels. Lemon juice is found to be strongly acidic, similar to vinegar, and toothpaste is shown to be basic, which is beneficial for neutralizing the acids in the mouth. The video also suggests a baking soda and lemon juice reaction as an alternative to vinegar, demonstrating that lemon juice can also produce a fizzing reaction with baking soda. The segment encourages viewers to conduct their experiments with other household items and concludes with a reminder of the importance of understanding the acidity and basicity of everyday substances.

Mindmap
Keywords
💡Vinegar Weights
Vinegar weights refer to the acidity level of vinegar, which is a common household item used in cooking and cleaning. In the video, the term is used to introduce the concept of testing the acidity or basicity of various liquids. The script mentions 'vinegar weights, number two,' indicating a specific pH level, where a lower number signifies stronger acidity.
💡Universal Indicator
A universal indicator is a tool used to determine the acidity or basicity of a solution by changing color in response to the pH level. In the context of the video, the universal indicator is dipped into different household liquids to visually represent their pH levels, with colors ranging from 1 to 14, where lower numbers indicate acidity and higher numbers indicate basicity.
💡Acidic
Acidic refers to a substance with a pH level less than 7, which means it has a higher concentration of hydrogen ions. In the video, several household items are tested for their acidity using the universal indicator, such as orange juice and vinegar, which are found to be acidic based on the color change of the indicator.
💡Basic
Basic, or alkaline, refers to a substance with a pH level greater than 7, indicating a lower concentration of hydrogen ions compared to acidic substances. The video explores basic substances like baking soda and basic soda, which are shown to have a pH level higher than 7, turning the universal indicator to colors indicative of basicity.
💡pH Scale
The pH scale is a logarithmic scale ranging from 0 to 14 that measures the acidity or basicity of a solution. In the video, the pH scale is used to interpret the color changes of the universal indicator, with 7 being neutral, values below 7 being acidic, and values above 7 being basic.
💡Orange Juice
Orange juice is a citrus fruit beverage that is tested for its acidity in the video. It is found to be acidic with a pH level around 3, as indicated by the color change of the universal indicator, which is consistent with the sour taste commonly associated with citrus fruits.
💡Baking Soda
Baking soda, or sodium bicarbonate, is a basic compound often used in cooking and cleaning. In the video, it is tested with the universal indicator and found to be basic, which is consistent with its use in neutralizing acids, such as in baking or as an antacid.
💡Soda
Soda, or soft drink, is a carbonated beverage that is tested in the video. It is found to be basic, which may be surprising given its taste, but this is due to the presence of alkaline substances like sodium bicarbonate that are used to neutralize the acidity of the carbonic acid formed during carbonation.
💡Tongue
The tongue is mentioned in the video in the context of 'tongue in cheek,' a phrase meaning to say something humorously without serious intent. It is also used to illustrate the concept of acidity and basicity, with the tongue being associated with a sour or acidic sensation when one has a tummyache.
💡Milk
Milk is a dairy product that is tested for its pH level in the video. It is found to be slightly acidic, with a pH level around 4.5 to 4.8, which is consistent with the natural buffering capacity of milk and its role in neutralizing stomach acid.
💡Vinegar
Vinegar is an acidic liquid made from the fermentation of ethanol by acetic acid bacteria. In the video, vinegar is tested and confirmed to be highly acidic, with a pH level around 2, which is further demonstrated by its strong reaction with baking soda in a separate experiment.
💡Alka-Seltzer
Alka-Seltzer is an over-the-counter medication used to treat heartburn and indigestion. In the video, it is tested with the universal indicator and found to be a weak base, which is consistent with its use in neutralizing stomach acid and providing relief from acid-related discomfort.
💡Lemon
Lemon is a citrus fruit known for its high acidity due to its citric acid content. In the video, lemon juice is tested and found to be very acidic, with a pH level around 2, similar to vinegar, which underscores the strong sour taste associated with lemons.
💡Toothpaste
Toothpaste is a substance used for cleaning and maintaining oral hygiene. In the video, toothpaste is tested with the universal indicator and found to be basic, which is important for neutralizing the acids in the mouth that can lead to tooth decay and maintaining a healthy oral environment.
Highlights

Introduction of the experiment to test the acidity or basicity of household liquids using universal indicator strips.

Explanation of how universal indicator strips work to determine the pH level of liquids.

Testing of orange juice and its classification as acidic with a pH of around 3.

Hypothesis about baking soda being basic and the subsequent testing to confirm it.

Misinterpretation of water's pH due to air exposure, leading to a slightly acidic result.

Soda's pH test revealing it to be acidic, similar to orange juice.

Discussion on the tongue's pH and its relation to feeling pain when it's too acidic.

Milk's pH test indicating it to be acidic, which was unexpected.

Vinegar's pH test confirming it as highly acidic, one of the strongest in the experiment.

Alka-Seltzer's test showing it as a weak base, useful for neutralizing stomach acid.

Lemon's pH test result aligning it with vinegar as a strong acid.

Toothpaste's pH test indicating it as basic, which helps neutralize acids in the mouth.

Experiment variation replacing vinegar with lemon juice in a baking soda reaction.

Observation that many everyday foods and drinks are acidic and the importance of balance.

Encouragement for viewers to conduct their experiments with other household items.

Final summary of the experiment's findings on the pH levels of various household liquids.

Transcripts

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Science ExperimentAcid TestUniversal IndicatorHome LiquidsEducationalDIYCitrus AcidityBaking SodaAlka-SeltzerToothpasteLemon Juice