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BJHS AtomicStructure

BJHS Atomic Structure

What is the name for the rows that go across on the periodic table? periods
What is the negatively charged particle of an atom? electron
This is found in the nucleus of an atom and has a positive charge. proton
The electrons found in the outermost energy level of an atom are called __________ _________. valence electron
This uses the atomic symbol and dots to show the valence electrons. Lewis dot diagram
Although very small in size compared to the whole atom, the part of the atom that contains most of the mass is called what? nucleus
The volume of an atom is mostly this. empty space (electron cloud)
The atomic mass is based on the number of these two parts of the atom. protons and the neutrons
The unit of measure the atomic mass is measured in. AMU or atomic mass unit
The “orbits” the electrons have around the nucleus are called this. energy levels, shells, or electron clouds
He is credited for the idea of the periodic table. Mendeleev
In the current periodic table, elements are arranged according to this. atomic number
The atomic number of an element also tells us the number of these. protons
Another name for a group on the periodic table is this. family
These are found to the left of the zig zag line on the periodic table metals
The smallest piece of an ELEMENT. atom
These metals are found in group one on the periodic table and are the most reactive. alkali metals
Neon is a member of this family of gases. Noble gases
Number of valence electrons found in alkaline earth metals. 2
The lanthanides and actinides found on the bottom two rows of the table are also known as this. rare earth metals
Properties of these include malleability, shiny, magnetic. metals
These physical properties include dullness, brittle, and these are often found as gases. non-metals
An example of this ‘mixture of metals’ is bronze, which is created by combining copper and tin. alloy
The electrons that are shared or given up and involved in bonding are these. valence electrons
The greatest number of valence electrons an atom can have. eight
Because these have characteristics of both metals and non-metals, these make good semi-conductors. metalloids
Created by: Ms. Traynor