Name that element or compound
Au
Element... Gold
H2O2
2... Hydrogen and Oxygen
Ni2OH
4
Element
A substance that can not be broken down into a simpler substance
What is the most important skill we need to have in order to find out what substances are in a mystery mixture?
Observation
Xe
Element... Xenon
Cu2COCoP
5... Cu, C, O, Co, P
He3K2Cu4Pb2
11
Compound
two or more elements that are combined together
What are three ways a substance can be identified or labeled?
Chemical Name, Common Name, Chemical Formula
KH
Compound... Potassium and Hydrogen
MoRh2KXe3WHCa2
7... Mo, Rh, K, Xe, W, H, Ca
Db2Mg3Li7O2
14
Substance
A particular kind of matter with the same properties
What is the difference between Ni and NI?
Ni is an element for Nickel and NI is a compound for Nitrogen and Iodine
KrCl
Compound... Krypton and Chlorine
Hs2Ga3NeBNi7RaIAlBi3Rn
10...Hs, Ga, Ne, B, Ni, Ra, I, Al, Bi, Rn
C11H22O6N12
51
Matter
Anything that has mass and takes up space
What was Mendeleyev's purpose for reorganizing the periodic table of elements?
He wanted to put all the elements with similar characteristics in the same column
HeArNiPb
Compound... Helium, Argon, Nickel, and Lead
AsK2HeDb3NoMn5MgArS2CFlBe9NbSi2NaHfLu
17... As, K, He, Db, No, Mn, Mg, Ar, S, C, Fl, Be, Nb, Si, Na, Hf, Lu
Ni2PHe2CoBaK2FrXeZnH3O
16
Chemical Reaction
A process when the atoms of a substance rearrange to form a new substance
Whe Mendeleyev changed the layout of the periodic table of elements, there were gaps where no known elements fit. What did the gaps tell scientists?
There are three answers