Physical changes alter the form of matter but not its chemical identity.
Monthly Archives: July 2020
Salt makes ice water colder by lowering the temperature at which water freezes. So, more ice melts than forms. Melting ice absorbs energy, lowering the temperature.
Why Salt Makes Ice Colder – How Cold Ice Gets
It's easy to make potassium chlorate at home using bleach and salt substitute.
How to Make Potassium Chlorate at Home From Bleach and ...
The Bohr model is a cake or planetary model of the atom, with electrons in shells. It is the first atomic model based mainly on quantum mechanics.
Bohr Model of the Atom
You can safely drink a small amount of heavy water, but drinking too much could make you sick or kill you.
Can You Drink Heavy Water? Is It Safe?
Matter has mass and occupies volume.
What Is Matter? Definition and Examples
Carbon dioxide is poisonous at high concentrations, but low concentrations within the body are essential for life.
Is Carbon Dioxide Poisonous?
Here are the liquids used to make a 14 layer density column. Use food coloring to dye colorless layers.
How to Make a Density Column With Many Layers
Learn what mineral acids are and see list of examples.