Table Terms
What is a type of element that is typically a hard, shiny solid and is a good conductor of heat and electricity?
Metal
What number tells you the number of protons and electrons?
Atomic number
How many groups are in the Periodic Table?
18
What is the symbol for Sodium?
Na
What is the brain of an atom?
Nucleus
What is a type of element that is usually a gas or a brittle solid at room temperature, not malleable or ductile and is a poor conductor of heat and electricity?
A non-metal
How many liquids are on the periodic table?
2
What is the number of periods in the Periodic Table?
7
What makes steel shiny?
Cr (Chromium)
What has a positive charge?
A proton
What is a type of element that shares some properties of metals and some of non-metals; located along the Periodic Staircase?
A metalloid
How do you calculate atomic mass?
What doe an element's groups determine?
The number of valence electrons and chemical properties
How many elements are on the periodic table?
118
What subatomic particle is not inside the nucleus?
Electrons
What are the columns on a Periodic Table that arrange the elements by the number of electrons that are in the outer shell; elements are grouped by their chemical and physical properties?
A group or family
What does 'valence electrons' mean?
number of electrons on outermost shell, tells how reactive an element is
What does an element's period determine?
The number of energy levels
What forms a -1 ion, used in pools to keep clean, but not Chlorine?
Br (Bromine)
What particle has a negative charge?
Electron
What are the rows in a Periodic Table that separate elements based on their energy levels?
A period
How do you calculate the number of neutrons?
Subtract the atomic number from the atomic mass
What are the groups that the most reactive elements are located?
1 & 17
A main metal used in the filament of light bulbs?
W (Tungsten)
What particle has no charge?