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22 Cards in this Set

  • Front
  • Back
Define 'atom'
The smallest, indivisible part of an element.
Define 'molecule'
Two or more of the same element bonded together
Define 'compound'
Two or more different types of elements bonded together
Define 'mixture'
Two or more different types of elements but not bonded together
Give the mass and charge for
Protons
Neutrons
Electrons
Protons - 1 - positive
Neutrons - 1 - neutral Electrons - 1/2500 - negative
Define 'atomic number'
The number of protons in an element
Define 'mass number'
The number of protons minus the number of neutrons
How is the periodic table arranged?
In ascending order of atomic number
Define 'group number'
The number of electrons in the outer shell
Define 'period number'
The number of shells
Why do elements in the same group act similarly?
They have the same number of outer shell electrons which determines it's chemical properties
Are metal oxides acidic or basic?
Basic
Are non-metal oxides acidic or basic?
Acidic
Why are Group 0/8 elements unreactive?
They have full outer shells
Name four things that all group 1 elements do in water
Bubble
Move on surface
Float
Reduce in size
What happens when sodium reacts with water that doesnt happen with lithium?
Melts into ball
What happens when potassium reacts with water that doesn't happen with lithium and sodium?
Produce coloured flame
Why does the reactivity increase down Group 1?
The outer shell electrons are further away from the nucleus
Give the flame colours of;
Lithium
Sodium
Potassium
Calcium
Lithium; Red
Sodium; Yellow
Potassium; Lilac
Calcium; Brick red
Give the chemical equation for the thermal decomposition of copper (ii) carbonate
CuCO3 -> CuO + CO2
Give the precipitate colour of the following metals when reacted with sodium hydroxide.
Fe(2+)
Fe(3+)
Cu(2+)
Fe(2+); Pale green to dirty green
Fe(3+); Orange to browny red
Cu(2+); Blue to blue
Give the chemical equation for the reaction of iron (ii) and sodium hydroxide.
Fe(2+) + 2OH -> Fe(OH)[2]