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UNit 3 lesson 1/2
Question | Answer |
---|---|
Atom | Smallest particle into which an element can be divided and still be the same element. |
Electron | The negatively charged charged particles later become known as electrons |
Nucleus | A small dense center that has a positive charge and is surrounded by moving electrons |
Proton | Positively charged particles in nucleus. |
Neutron | The uncharged particles of the nucleus |
Electron Cloud | Where the electrons move within an area around the nucleus called the nucleus cloud |
Atomic Number | The number of protons in the nucleus of an atom is the atomic number of that atom |
Mass Number | The total number of protons and neutrons in an atoms nucleus |
Periodic Table | The arrangement of the periodic elements into the same groups |
Chemical Symbol | is an abbreviation for the elements name |
Average Atomic Mass | is the weighted average of the masses of all the nutrality |
Metal | are elements that are shiny and conduct heat and electricity well |
Nonmetal | are poor conductors of heat and electricity |
Mellatoid | are elements that have some properties of metals and some properties of nonmetals |
Group | Each vertical column of elements |
Period | Each horizontal column in the periodic table |