Monthly Archives: April 2020


The stomach mucosal layer secretes bicarbonate, neutralizing acid and preventing the stomach from dissolving itself.
The pH of the stomach is always on the acidic side of the pH scale, but it varies from a pH below 3.0 to a pH between 5.0 and 6.0. Stomach pH is lowest when food is being digested and highest when the stomach is empty. The reason the stomach […]

What Is the pH of the Stomach?


Examples of Plasma
Here are 20 examples of plasma. Plasma is the most abundant state of matter in the universe. Unlike solids, liquids, and gases, plasma consists of free electrons or ions that aren’t bound to an atomic nucleus. Plasma Examples Lightning Aurora Comet tail Solar wind Stars (including the Sun) Interstellar gas […]

20 Examples of Plasma (Physics)


Magnesium burns with a white fire. 2
You can make fire burn with a pure white flame. White is an elusive fire color because the fuel that supports a flame burns with its own characteristic spectrum. But, with a little chemistry know-how, you can get white fire. Here’s how to do it, along with tips to make […]

How to Make White Fire



A balanced chemical equation has the same number of atoms of each element on both sides of the reaction arrow.
A balanced chemical equation represents a chemical reaction as chemical formulas and numbers. Here is a collection of more than 10 balanced chemical equations. Use them as homework examples or to review the principles of balancing equations. Balanced Equation Basics Elements are represented using their element symbols. The left side […]

Examples of Balanced Chemical Equations


Ionic and Covalent Bonds
Ionic and covalent bonds are the two main types of chemical bonding. A chemical bond is a link formed between two or more atoms or ions. The main difference between ionic and covalent bonds is how equally the electrons are shared between atoms in the bond. Here is an explanation […]

Ionic vs Covalent Bonds





From left to right solutions of 0.1 M HCl, 3 buffer solutions of pH 3.78, 3 of pH 4.00, 3 of pH 4.62 and NaOH 0.1 M after adding different amounts of bromocresol green.
It’s easy to prepare bromocresol green indicator solution. Bromocresol green or BCG is a triphenylmethane dye used as a pH indicator for titration, microbial growth media, and DNA agarose gel electrophoresis. However, its most common use is to measure blood serum albumin levels in humans and other mammals when liver […]

How to Make Bromocresol Green Indicator Solution


Bromcresol Purple Chemical Structure
This is the recipe for bromocresol purple, which is a common pH indicator. The final solution will be 0.04% aqueous bromocresol purple. Bromocresol Purple Ingredients Bromocresol purple indicator is an aqueous solution of powdered dye. The solid is a dark violet powder, while the indicator solution is purple. It’s important […]

Bromocresol Purple Indicator Solution Recipe