Unit 1
When a solid changes to a liquid it is called what?
Melting
What is an atom?
Atoms are the basic building blocks of ordinary matter.
Which scientist invented the earliest version of the periodic table?
Alexandre-Emile Béguyer de Chancourtois
What is fission?
Fission is the nuclear process that involves the splitting of a nucleus
What is a solute?
The minor component in a solution, dissolved in the solvent.
True or false? The particles of a gas are packed tightly together.
False, They are fastly moving with plenty of surface area.
How many electrons fit in each shell around an atom?
Electron Capacity = 2n2, the max number would be 72
What is the symbol for calcium on the periodic table?
Ca
What is radioactive decay?
Radioactive decay is the process through which some atoms revert to a more stable nuclear configuration by emitting energy
What is a solvent?
Able to dissolve other substances.
What is it called when a solid changes directly into a gas?
Sublimation
What is the difference between a compound and a molecule?
A compound is a substance that is composed from two or more different elements.
What is the most metallic element on the periodic table?
Silver
What are isotopes?
Isotopes are different versions of elements.
The best method to separate the solute from the solvent is?
Simple distillation is a method for separating the solvent from a solution.