Elements
What Is a Element?
A pure substance made of one atom that cannot be broken down into simpler substances by chemical means.
what other language are some of the chemical symbols abbreviated in?
Latin
what's the chemical formula for water
H20
True or False
Compound cannot be broken down into simpler substances
False
what are Group VII elements called
halogens
how many elements are named after planets?
4 Mercury (Hg), Uranium (U), Neptunium (Np), and Plutonium (Pu)
what is the chemical symbol for potassium
K
what are chemical formulas used for
identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element.
what is a compound?
A Chemical substances made up of two or more elements that are chemically bound together in a fixed ratio.
how many groups are on the periodic table?
18 groups
How many elements are found in the formula for sulfuric acid
3 elements, hydrogen, sulfur and oxygen
what is the chemical symbol for Tungsten
W
how many elements are there?
118
NaCI is a ionic compound for what?
Sodium Chloride
who invented the periodic table?
Dmitri Mendeleev
Name the first 4 elements in Group I
lithium, sodium, potassium and rubidium
what is the chemical symbol for lead, silver and gold?
Pb, Ag and Au
what does the chemical formula for methane
CH4
True or False: ammonia is a compound
True
what is the middle block of the periodic table called>
transition elements
what three elements are found in copper(II) nitrate?
Copper, nitrogen and oxygen
what is the chemical symbol for diamond?
C
whats the chemical formula for Iron Oxide
Fe2O3
how many types of compounds are there? name them
2 types, covalent and ionic
What are Group II elements called in the periodic table?
alkaline earth metals