Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
44 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
what is the first group of elements called? |
alakli metals |
|
|
|
how do you get the atomic mass of an element? |
protoms + neutrons |
a-value |
|
|
wats the difference between an ion and an atom? |
ion- can have different number of electrons atom-proton and electron number are the same |
|
|
|
what is the most abundant element in the human body? |
oxygen |
|
|
|
what is the most abundant element in the earth's atmosphere? |
nitrogen |
|
|
|
what is the second most abundant element in the earth's crust? |
silicon |
|
|
|
what is the most abundant element inthe universe? |
hydrogen |
|
|
|
what is group 18 of the periodic table called? |
noble gases |
|
|
|
what 2 elements make up brass |
copper + zinc |
|
|
|
what element has the highest melting point of any metal? |
tungsten |
|
|
|
what is the most abundant metal on earth? |
aluminum |
|
|
|
what is a negative ion called? |
anion |
|
|
|
what si a positive ion called? |
cadion |
|
|
|
what si a particle with the same number of protons but different number of netrons? |
isotope |
|
|
|
what is group 3-12 on the periodic table called? |
transition metals |
|
|
|
what noble gas causes lung cancer? |
radon |
|
|
|
what is the hardest metal? |
titanium |
|
|
|
what is the most used metal by man? |
iron |
|
|
|
what is the most reactive element? |
fluorine |
|
|
|
what radioactive elementy is used in breeder reactors? |
plutonium |
|
|
|
what is the elemnt with the highest melting point? |
carbon |
|
|
|
what is group 2 onthe periodic table called? |
alkaline earth metals |
|
|
|
which is the only metal that is liquid at room temp? |
mercury |
|
|
|
what is group 16 on the periodic table called? |
chalcogens |
|
|
|
what is group 11 on the periodic table? |
noble metals |
|
|
|
what si the most malleble element? |
gold |
|
|
|
which elemet is the best coductor of heat and electricity? |
silver |
|
|
|
what is the first noble gas to form compounds? |
xenon |
|
|
|
what is group 17 on the periodic table? |
halogens |
|
|
|
who wrote the modern vesion of the periodic table? |
mendeleev |
|
|
|
who isolated and named oxgen? |
lovaisier |
|
|
|
who wrote "skeptical chemists"? |
boyle |
|
|
|
who suggested the theoury of combustion? |
stahl |
|
|
|
who first described small particles as atomos? |
democritus |
|
|
|
who inveteded the mass spectrometer? |
aston |
|
|
|
who discovered the electron? |
thompson |
|
|
|
who discovered the proton? |
goldstein |
|
|
|
who discovered the neutron? |
chadwick |
|
|
|
who disproved george stahl's theory? |
priestly |
|
|
|
who wrote "the new system of chemical philosophy"? |
dalton |
|
|
|
who gave us our modern day naming system for the elements? |
jons jakob brezilious |
|
|
|
who wrote the law of definite proportions? |
proust |
|
|
|
how is an ion formed? |
gains and loses electrons |
|
|
|
what are the diatomic molecules? |
h2 o2 n2 i2 p2 cl2 br2 f2 |
|
