Y11 Mock Atomic structue and the periodic table

Question 1

what are the features of the plum pudding model

Answer 1

discovery of the electron led to the plum pudding model
ball of positive charge with embedded electron

Question 2

features of the nuclear model

Answer 2

electrons orbit the nucleus at specific distances
theoretical calculations of bohr agreed with experimental observation

Question 3

what is relative atomic mass

Answer 3

average value that takes into account the abundance of the isotopes of the element

Question 4

relative atomic mass calculation

Answer 4

(isotope 1 x abundance) + (isotope 2 x abundance)/
sum of abundances of all isotopes

Question 5

how are elements in the periodic table arranged

Answer 5

order of atomic number

Question 6

features of the periodic table

Answer 6

elements with similar properties are in groups
similar properties occur at regular intervals
elements in the same group have the same number of outer electrons and similar chemical properties

Question 7

what is the pattern of reactivity of alkali metals with oxygen

Answer 7

increasingly reactive

Question 8

how does lithium react with oxygen

Answer 8

bright purple flame, white powdery solid

Question 9

how does sodium react with oxygen

Answer 9

yellow flame, explosion, white solid

Question 10

how does potassium react with oxygen

Answer 10

vigorous purple flame, explosion, white powder

Question 11

what is formed when alkali metals react with oxygen

Answer 11

metal oxide

Question 12

what kind of reaction is alkali metals with oxygen

Answer 12

oxidation

Question 13

what is the pattern of reactivity with alkali metals and water

Answer 13

increasingly reactive

Question 14

Li with water

Answer 14

fizzes, smoke

Question 15

na with water

Answer 15

orange flame, fizzes, explosion, moved fast

Question 16

K with water

Answer 16

lilac flame, fizzed more, moved quicker, exploded faster

Question 17

what do metals and water form

Answer 17

a metal hydroxide and hydrogen

Question 18

properties of metal hydroxide

Answer 18

alkaline
turns universal indicator purple

Question 19

how do alkali metals react with chlorine

Answer 19

produce a metal salt

Question 20

properties of mendeleev periodic table

Answer 20

left gaps for undiscovered elements
ordered in atomic weight but some elements switched
elements with properties predicted were discovered and filled the gaps
knowledge of isotopes explained why order of atomic weight was not always correct

Question 21

properties of group 0 elements

Answer 21

noble gases
un reactive and do not easily form molecules
atoms have stable arrangements of electrons
boiling points and melting points increase going down the group