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Chemistry

Periodic table and atomic structure - Unit 3

QuestionAnswer
What are group 1 elements also known as? Alkali metals
What are group 2 elements also known as? Alkaline earth metals
What is the d-block also known as? Tranisiton metals
What are group 7 also known as? Halogens
What are group 8/0 also known as? Noble gases
Where do metals lie? To the left of the striarcase
Where do non-metals lie? To the right of the staircase
What is the mass number? Sum of number of protons and neutrons
What is atomic number? The number of electrons
What is an isotope? An atom with the same number of protons and electrons but differant numbers of neutrons
What must be used to veiw an emissions spectra? Spectroscope
How can energy be provided to a solid sample? Flame testing
How can energy be provided to a gaseous sample? Electrical discharge tube at low pressure
What causes the release of light giving the emission spectra? Electrons falling back to their normal quantum shell, having jumped up energy levels
What is ionization energy? Energy required to remove one mole of gaseous electrons from one mole of gaseous atoms
Which element gives a lilac flame? Pottassuim
Which elelment gives a Yellow flame? Soduim
Which two elements give a red flame? Lithium and strontuim
Which element gives a brick red flame? Calcuim
Which element gives no flame colour? Magnesuim
Which element gives an apple green flame? Barium
Which element gives a blue/green flame? Copper
Which quantum levels are easier to remove electrons from? Outer
What does a jump in ionization energies indicate? A change of quantum level
What happens to ionization energies as you move across the period? They increase
What happens to ionization energies as you move down the group? They decrease
How are electrons arranged? In quantum shells
What are the 3 first subshells? s,p,d
How many electrons fit into the s sub-shell? 2
How many electrons fit into p sub-shell? 6
How many electrons are found in sub-shell d? 10
In what order are the sub-shells illed? s, p, d
What causes chemical simularities down the groups? Simular electron arrangements
What is electron affinity? Energy change occuring when one mole of gaseous electrons are added to one mole of gaseous atoms
What are the two types of compounds? Giant and molecular
What are the 3 types of chemical bonding? Metallic, covalent, ionic
What type of bonding is found in molecular compounds? Covalent
What type of bond in found in giant compounds? Metallic, covalent, ionic
What size are positive ions in relation to their elements? Smaller
What size are negative ions in relation to their elements? Larger
What keeps the crystalline shape? Attraction from differant ions, repulsion from same ions
What are high melting points of metals caused by? Metallic bonding
What is high thermal conductivity of metals caused by? Metallic bonding
What is high electrical conductivity of metals caused by? Metallic bonding
What is the model for metallic bonding? Metal ion surronded by electrons
Does metallic bonding acount for all metal properties? No
Created by: 1988kayla