bleach , stuff for cleaning washrooms, kitchens etc
Salt. Carbon, if you have a carbon filter for your fish tank.
Ammonia is a compound and so can exist as a pure substance. Household ammonia is not pure. It is a 3% ammonia solution. The other 97% is water. Pure ammonia is very dangerous.
These are the chemical elements from the periodic table of Mendeleev.
These are examples of chemical elements. They are pure substances that cannot be broken down into simpler substances by chemical reactions. Each element is defined by the number of protons in its atoms.
The chemical formula of household ammonia is NH3.
poetry and philosophy are the examples of pure research.
Any chemical may be pure or impure.
Because it is the other way around: Household gas (group name, mixture, not pure) may contain methane gas (chemical name for compound: CH4) among other gasses.
Any chemical compound can be refined to become pure: 99 %, 99,99 % .........99,9999 %; but be sure, the absolute purity doesn't exist.
Some examples of pure compounds include water (H2O), table salt (NaCl), sugar (C12H22O11), and carbon dioxide (CO2). These compounds consist of only one type of molecule and have a fixed chemical composition.
A pure substance is a homogeneous chemical substance which means its composition is constant and its properties are consistent too. Some examples of this kind of substances are water, baking soda and sucrose.
solution