element symbols
What is the symbol for Gold?
Au
The vertical columns on the table are called this.
groups
these subatomic particles have a positive charge.
protons
Most elements on the periodic table fall into this class; they are usually shiny and conduct heat well
metals
In the chemical formula,the "2" is called this, and it tells you there are two Oxygen atoms.
subscript
What element does the symbol Pb stand for?
lead
Elements in Group 18, like Neon, are known as these gases.
Noble gasses
The number of these in an atom determines its Atomic Number.
protons
These elements are found on the far right of the table and are generally poor conductors.
non metals
This large number is placed in front of a formula to show how many molecules or units are present.
coefficiant
What is the symbol for Sodium?
Na
Group 1 elements are known as these highly reactive metals
Alkali Metals
to find the number of neutrons, you subtract the atomic number from this.
atomic mass
These elements sit along the "zigzag" line and have properties of both metals and nonmetals.
metalloids
These are the starting substances in a chemical reaction, found on the left side of the "yields" arrow.
reactants
What element has the symbol Fe?
iron
group 17 elements, like Fluorine, are known as these
Halogens
these electrons are found in the outermost shell and are used for bonding.
valence electrons
This is the only metal that is a liquid at room temperature.
mercury
These are the new substances formed during a chemical reaction, found on the right side of the arrow.
products
What is the symbol for Antimony?
Sb
these two rows are typically pulled out and placed at the bottom of the table.
Lanthanides & Actinides
These are atoms of the same element that have the same number of protons but different numbers of neutrons.
isotopes
This property describes a metal's ability to be hammered into thin sheets without breaking
malleability
This law states that matter cannot be created or destroyed, meaning the total mass of the reactants must equal the mass of the products.
the law of conservation of mass