Chemistry Test S2 Flashcards
What are all elements made of
One atom
What are all elements
Pure substances
What are diamonds made out of
Carbon
What are all elements given?
Symbols
What are downward columns called on a periodic table called?
Groups
What are rows called on a periodic table?
Periods
whats similar in elements in the same group
they have the same properties
what are group 1 simeralities?
they are soft and can be cut with a knife
react with water
must be stored in oil
all the alkilai metals are?
Li-lithium
Na-sodium
k-potassium
Rb-rubidium
Cs-cesium
Fr-francium
alkali metals?
the alkiali metals are a family of very reactive metals that are stored under oil
what are group 7 called
the halogens
the elemenst in the halogens
F-fluorine
Cl-chlorine
Br-bromine
I-iodine
the halogens?
the halogens are a family of very reactive non metals
what is the most reactive non metal in group 7
fluorine
what is iodine used as
its used as an antiseptic on cuts
