periodic table

Question 1

how are the elements in the periodic table arranged?

Answer 1

in order of increasing atomic number

Question 2

how are elements with similar properties placed in the periodic table?

Answer 2

in vertical columns - same number of electrons in outer shell

Question 3

how do you use the periodic table to predict the reactivity of elements?

Answer 3

metals - reactivity increases down the group
non metals - reactivity increases up the group

Question 4

creation and attributes of mendeleev’s periodic table

Answer 4

arranged elements in order of increasing relative atomic mass

Question 5

how are metals and non metals located on the periodic table?

Answer 5

metals are good conductors and located in the left, non metals are poor conductors and found on the right

Question 6

what are noble gases?

Answer 6

colourless, odorless, tasteless and nonflammable under standard conditions

Question 7

why do noble gases not react?

Answer 7

they have a full outer shell

Question 8

what are the properties and reactivity of group 1 alkali metals?

Answer 8

they are soft, highly reactive with relatively low melting and boiling points

Question 9

what are the properties of group 7?

Answer 9

the further down the group an element is, the higher its melting point

Question 10

what are the properties of transition metals?

Answer 10

-good conductors of heat and electricity
-can be hammered or bent into shape easily
-have high melting points
-hard and tough
-high densities