homemade ph solution

Activities

Developing and Analyzing Urine Samples as a Model of Kidney Function

Developing and Analyzing Urine Samples as a Model of Kidney Function

Abnormal urine composition often indicates disease or infection. Diabetes is often diagnosed after a patient has a positive test for glucose in the urine. Diabetes is the result of an inability to absorb glucose from the blood. The body compensates for these elevated blood glucose levels by filtering the glucose out through the kidneys; the excess glucose exits the body through the urine.
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Newton’s Law of Cooling

Newton’s Law of Cooling

Newton’s law of cooling states that the rate at which an object cools is proportional to the difference in temperature between the object and the object’s surroundings. Simply put, a glass of hot water will cool down faster in a cold room than in a hot room. This simple principle is relatively easy to prove, and the experiment has repeatable and reproducible results.
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Demonstrating Cellular Respiration and Fermentation

Demonstrating Cellular Respiration and Fermentation

Cellular respiration and fermentation are 2 of the most challenging concepts for introductory biology students, who may become so consumed by memorizing steps of the Krebs cycle and glycolysis that they lose sight of the big picture. The following demonstrations place aerobic cell respiration and fermentation firmly in grasp. First, students observe respiration in germinating seeds by detecting the carbon dioxide produced. Next, they observe the carbon dioxide gas produced by yeast fermentation.
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Chemistry Solutions Practice Problems

Chemistry Solutions Practice Problems

Molar solutions 1. Describe how you would prepare 1 L of a 1 M solution of sodium chloride. The gram…
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Hydrogen Spectrum Activity

Hydrogen Spectrum Activity

Objective To observe hydrogen’s emission spectrum and to verify that the Bohr model of the hydrogen atom accounts for the…
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How to Make Luminol Glow: Glowing Reaction Activity

How to Make Luminol Glow: Glowing Reaction Activity

Luminol is a chemical that produces a beautiful blue fluorescence when oxidized by hydrogen peroxide. In addition to providing one…
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Photosynthesis Modeling with Pop Beads

Photosynthesis Modeling with Pop Beads

While studying photosynthesis, students can have difficulty understanding how the carbon in CO2 becomes the carbon in glucose (6H2O + 6CO2→C6H12O6 +…
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Photosynthesis and Floating Leaf Disks

Photosynthesis and Floating Leaf Disks

If you have never tried the leaf disk assay, you are missing out on one of the best photosynthesis labs…
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Using Aquatic Plants to Demonstrate Photosynthesis

Using Aquatic Plants to Demonstrate Photosynthesis

Introduction Egeria densa, also known as Elodea densa because of its previously incorrect classification in the Elodea genus, is the most popular aquatic plant…
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A New Approach to Teaching Atomic Theory

A New Approach to Teaching Atomic Theory

For chemistry teacher Siobhan Julian, teaching the history of atomic theory by lecture “was dry and tedious and boring for everyone involved.” Then she took a fresh approach—one that focuses on doing science to learn science history.
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Let’s Do S’more Chemistry!

Let’s Do S’more Chemistry!

Introduction This laboratory activity explores the topics of stoichiometry and limiting reactants in a fun, delicious way! Mass/mole relationships and…
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Flex and Extend: Modeling a Human Hand

Flex and Extend: Modeling a Human Hand

Lead students in an engaging and creative project where they build a model that demonstrates the flexing action of the…
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Ballistics Investigation Activity

Ballistics Investigation Activity

Ballistics is the study of projectile motion and a critical area of investigation in forensic study. When a projectile is…
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Forensic Hair Analysis Activity

Forensic Hair Analysis Activity

Life was long gone from the cold, bloody corpse when the crime scene investigators arrived. The seasoned team soon confirmed…
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Bloodstain Analysis Investigation Activity

Bloodstain Analysis Investigation Activity

Blood is among the basic types of physical evidence often encountered at a crime scene. Investigators use blood evidence to…
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Development of Latent Fingerprints with Silver Nitrate

Development of Latent Fingerprints with Silver Nitrate

Background Three types of fingerprints can be found at a crime scene—plastic, visible, and latent. Plastic impressions are fingerprints left in soft…
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Activities with UV Beads

Activities with UV Beads

Ultraviolet-sensitive beads change color when exposed to ultraviolet (UV) light. Students can use these beads to perform inquiry-based experiments to…
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Boats and Buoyancy

Boats and Buoyancy

Investigate physical science and engineering concepts including buoyancy, displacement, and density. Students construct an aluminum foil boat prototype and measure how much weight their boat can carry before taking on water or sinking.
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Dollar Store Single Function Signal Generator

Dollar Store Single Function Signal Generator

In this activity, students use a solar-powered model, such as the dancing flowers often sold at discount variety stores. They carefully disassemble the plastic housing and attach a sensor to the capacitor, then use probe ware to graph the voltage across the capacitor.
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Determining Flavor

Determining Flavor

The Connection Between Taste, Smell, and Flavor The sense of taste and smell are closely related. Humans can distinguish 5…
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Boost Your Anatomy and Physiology Lab Budget with Grants

Boost Your Anatomy and Physiology Lab Budget with Grants

Budgets and all the administrative work around them are always top frustrations and stressors for lab managers and college or…
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Do-It-Yourself Snowflakes

Do-It-Yourself Snowflakes

Snow delights most students and frustrates most teachers. Please everyone when you create snowflakes in the comfort of your classroom….
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Foaming Rainbow Demonstration

Foaming Rainbow Demonstration

Dry ice is added to a basic solution of dish detergent and universal indicator. Commercially, dry ice is used as…
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The Anatomy of a Human Leg

The Anatomy of a Human Leg

Sculpting the musculature of the lower leg Human anatomy is often taught using a systems approach—skeletal system, nervous system, digestive…
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Borax Snowflake

Borax Snowflake

This lab activity will guarantee a snow day! Teach solutions and crystallization while making snowflake decorations for your classroom. Looking…
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Autumn Leaves Craft Project

Autumn Leaves Craft Project

This activity takes a look at autumn leaves as objects of aesthetic beauty and scientific interest. For this activity, each…
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Holiday Demonstrations and Activities

Holiday Demonstrations and Activities

As the holidays arrive, students tend to become distracted. Performing demonstrations and doing fun class activities can help keep their…
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How to Make Slime

How to Make Slime

An Introduction to Polymer Chemistry Whether you want to introduce students to polymers, engage them with a fun science demo,…
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Four Engaging Lab Activities for Spectroscopy

Four Engaging Lab Activities for Spectroscopy

Help your students understand spectroscopy with these hand-on lab activities. Here are 4 engaging hands-on lab activities from Thermo Fisher…
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Bloody Chlorophyll Lab

Bloody Chlorophyll Lab

“Scare” your students by exciting the electrons of chlorophyll molecules with black light, causing the molecules to release their energy…
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Kool-Aid® Chromatography

Kool-Aid® Chromatography

Chromatography is an important technique in the chemistry lab. This activity uses a popular beverage for a safe, engaging lab…
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Chemoween and Other Spooky Science

Chemoween and Other Spooky Science

Treat your ghosts and ghouls to some spirited demos and hands-on activities, and celebrate Halloween as the finale to your…
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Explaining Patterns in the Periodic Table

Explaining Patterns in the Periodic Table

Identifying family and period properties within the periodic table Too often, students remember for a short time certain trends and…
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Move Your Classroom Outside

Move Your Classroom Outside

Outdoor Learning Activities Spring is in the air, and if your students are like mine, they’re just itching to be…
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Shaving Cream and Food Coloring Chemistry

Shaving Cream and Food Coloring Chemistry

Decorate wrapping paper or eggs while illustrating scientific concepts and making real-world connections. Foam shaving cream is primarily composed of…
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Egg Vacuum Activity

Egg Vacuum Activity

If you are looking for an attention-getting demonstration of the gas laws for physical science students at any grade level,…
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Making Ice Cream

Making Ice Cream

Demonstrate the colligative property freezing-point depression and make edible ice cream at the same time. This safe, inexpensive, and engaging experiment works well for a science night, open house, kids’ group, or anywhere fun and science meet. Using table salt, reduce the temperature of a mix of ice and liquid water to below the freezing point of water. After 5 minutes, open the cup for a tasty treat.
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Eggsploring Enzymes Activity

Eggsploring Enzymes Activity

Enzymes are specialized biological catalysts that complete biological work within cells. In this activity, students investigate the effect of pepsin,…
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Crystallization Investigation

Crystallization Investigation

Crystallization through precipitation lab Crystals are solids that form when molecules join in a regular repeating pattern. Crystals mesmerized humans…
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Color Change Chemical Reaction

Color Change Chemical Reaction

Also known as the traffic light reaction, indigo carmine produces a colorful demonstration In this activity, a redox indicator (indigo…
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Optics of the Human Eye

Optics of the Human Eye

Background Geometric optics explains how optical devices (such as lenses and mirrors) create images by considering that light travels in…
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Plant Biodiversity Field Activity

Plant Biodiversity Field Activity

Take your class outdoors to study biodiversity. What is biodiversity? Simply stated, biodiversity is the number and variety of organisms…
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Cooking Eggs with Chemicals

Cooking Eggs with Chemicals

A demonstration of denaturing protein Introduce high school biology and chemistry students to the concept of denatured proteins with this…
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Single-replacement Reaction

Single-replacement Reaction

Create silver decorations with chemistry In this activity students perform a redox reaction in which silver take the place of…
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3-D Imaging: The Mystery Unlocked

3-D Imaging: The Mystery Unlocked

Seeing the Solar System in a New Dimension Moviegoers are demanding more from their sensory experience, and 3-D viewing has…
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Make Your Own Indicators

Make Your Own Indicators

Testing the pH of a solution is a fundamental skill in chemistry. Students typically test pH using a pH meter,…
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Chicken Wing Musculature

Chicken Wing Musculature

Explore the structures and functions of muscle tissue Essential question What are the structures and functions of muscle tissue? Objectives…
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Temperature Sensation Activity

Temperature Sensation Activity

How do the density and arrangement of cutaneous receptors vary on the human arm? The skin is the largest organ…
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Balancing Chemical Equations

Balancing Chemical Equations

Using Models to Simplify Balancing Equation To balance chemical equations, students must know how to count atoms, understand the difference…
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Maggot Michelangelos

Maggot Michelangelos

Using Artwork to Gain Behavioral Insight Overview During this activity, students will use house fly larvae (i.e., maggots) to answer…
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Mole Day (October 23) Celebration

Mole Day (October 23) Celebration

How do you celebrate the value of the Avogadro constant and why would you want to anyway? Happy Mole Day….
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Investigating Enzyme Reaction Rates Using Toothpickase

Investigating Enzyme Reaction Rates Using Toothpickase

A dry lab activity Objectives At the end of this activity, students should be able to demonstrate their understanding of…
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Rock Candy: An Edible Study of Crystallization

Rock Candy: An Edible Study of Crystallization

An Investigation of Supersaturated Solutions Making rock candy is a safe way to introduce students to solutions and crystal growth—and…
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Classifying Chemical Reactions

Classifying Chemical Reactions

Writing and balancing chemical equations is an essential skill for chemistry students, who must learn to predict the products of a reaction…
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Silvering Glass

Silvering Glass

Create Silver-Mirrored Christmas Ornaments with a Redox Reaction Create silver ornaments with your students using a chemical process similar to…
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