click below
click below
Normal Size Small Size show me how
PS4
PS4 vocab
Term | Definition |
---|---|
Metals | They are located to the left of the stair step line. They tend to lose electrons in chemical reactions to form positive ions. They are good conductors of heat and electricity,shiny,malleable,and ductile. |
Metalloid | They border the stair-step line and have some properties of both metals and nonmetals. |
Nonmetal | They are located to the right of the stair-step line. They tend to gain electrons in chemical reactions to form negative ions. They are poor conductors of heat and electricity (good insulators), brittle and dull as solids. |
Periodic Laws | The law that states that the repeating chemical and physical properties of elements change with the atomic numbers of the elements. |
Atomic symbol | Identifies the elements, consists of one, two, or three letters. The first letter is always capitalized. All other letters are lower case. |
Protons | A positive subatomic particle that is located in the nucleus having a mass 1 amu. It was discovered by Rutherford. |
Neutron | A subatomic particle with no charge that is located in the nucleus having a mass of 1 amu. It was discovered by chadwick. |
Electron | A negative subatomic particle that is located in the electron cloud having a mass of 0 amu. It was discovered by Thomson. |