Atoms And Elements Flashcards
What are elements?
The building block chemicals.
What is everything made of?
Atoms
Groups of atoms are…
…molecules.
What shows all of the elements?
The periodic table.
The periodic table is split into…
…metals and non- metals.
Two Elements that occur in the ground are…
…gold and silver.
Two elements that occur in rocks are…
…copper and tin.
Two elements discovered using electricity or heat…
…Copper and tin and aluminium and sodium.
All elements are represented by…
…symbols.
What are compounds?
A chemical made from two or more elements joined together.
Who made the first discovery about atoms?
Circa 400 bc
Democritas
When was Coulomb’s law invented?
1780s.
Who invented the atomic theory in 1803?
John Dalton.
Who discovered the plum pudding atom model?
1896
J.J Thomson.
What did Ernest Rutherford discover and when?
All of the mass of the atom is in a positively charged ball at the atoms centre. (1909)
Who discovered the neutrally charged neutron?
Chadwick 1931
Who invented the large hadron collider in 2013?
Peter Higgs.
Learn the metals song!!!!
“Metals are shiny, metals conduct,
Metals are sonorous and malleable and ductile,
And metals have, And metals have, And metals have…
Generally high melting and boiling points!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!”
H2S with a small two
Hydrogen sulfide.
SO2 with a small two.
Sulfur dioxide.
Boron symbol
B
Antimony symbol
Sb
Calcium symbol
Ca
Mercury symbol
Hg
Lead symbol
Pb
Coal or carbon symbol
C
Sodium symbol
Na
Gold symbol
Au
Xenon symbol
xe
Iodine symbol
I
When two elements are chemically joined together they become…
A compound
Most elements are…
Metals
Most non-metals have a ____ melting point.
Low
How many atoms are in a Sulphur Dioxide molecule?
3
Iron oxide is…
A compound of oxygen and iron.
The smallest particle of a compound is a…
Molecule.
The smallest particle of an element is an….
Atom.
