Glossary

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essential elements

Subject: 

  • Physical Sciences

elements that are essential to sustain life.

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chemical formula
Subject:
Physical Sciences

a short way of writing the name of a chemical compound. It shows the composition of the compound...

homogeneous mixture
Subject:
Physical Sciences

the solution is the same throughout the mixture.

contact process
Subject:
Physical Sciences

reactant molecules are in contact with the solid catalyst.

closed system
Subject:
Physical Sciences

reversible reactions reach equilibrium, provided they occur in a closed container (closed system...

energy levels
Subject:
Physical Sciences

the levels of energy in which electrons move and which have fixed amounts of energy.