Periodic Table YEAR 10 Flashcards
Groups
Columns
Valence electrons
Periods
Rows
Amount of shells
Daltons atomic model
Atoms are one solid indivisible ball of a single element
JJ Thompsons atomic model
Plum pudding
Atoms are a positive ball filled with negative electrons
What did rutherford do
-shot positive alpha particles at gold foil
-hit the positive muscles and bounced off
-atoms have a tiny positive nucleus
What is group 1 of the periodic table
Alkali metals
properties of alkali metals
Soft
Low density
Low boiling point
Shiny
How do alkali metals react with water
They fizz hydrogen and bubble around
Reactions become more severe as you move down the periodic table
What is group 7 of the periodic table called
Halogens
litium reaction with water
Produce hydrogen bubbles
sodium reaction with water
Melts to form a ball that fizzes around on the surface
What is group 0 of the periodic table
Noble gases
What are the noble gases
unreactive non-metal gases