CBA 3 REVIEW Part 2
Electromagnetic Spectrum Ranges from all types of electromagnetic radiation
Falls between infrared and ultraviolet rays.
Atoms are made up of subatomic particles called Protons, Neutrons, and Electrons. Atoms with the same number of Protons and Electrons are called Neutral Atoms because they have no charge. Neils Bohr is a famous scientist who developed the model of an atom as a build up of successive orbital shells.
The number of Protons in an Element
The number of Protons and Neutrons in an element. Atomic Mass -Atomic Number Number of Neutrons 4 Atomic Mass - 2 Atomic Number 2 Neutrons
A negatively charged subatomic particle found in the Electron Cloud. They are smaller and have less mass than Protons and Neutrons.
Electrons in the outermost shell of the electron cloud. They have the highest amount of energy and determine the chemical property of the element (How it reacts with other elements).
Atomic Mass increases when moving right and down the Periodic Table due to the addition of more atomic particles. When moving left to right, the number of valence shells of the atom in each element increases. Properties of Metals – Good Conductors of heat and electricity, lustrous (Shiny), high melting and boiling point.
All elements in a group have the same number of VALENCE ELECTRONS which causes them to react in similar ways
All elements in the same period have the same energy level (number of electron shells)
Have a full Valence Shell
Balanced Equations An equation is balanced when the reactants and products have the same number of each atom on each side in a chemical equation
Occurs when the atoms of a substance rearrange themselves into a new configuration which results in a new substance The reactants combine to produce products.
Formation of Gas Produces heat or light Forms a precipitate Color Change
The product of a chemical reaction that has different properties than their individual properties. A common compound found in organisms is Glucose C 6 H 12 O 6
NO CHANGE IN ATOM NUMBER