Chemistry - periodic table

Question 1

periodic table

Answer 1

• identify chemical makeup of elements
• can predict properties of elements
• arranged in order of ascending atomic number
• arranged in “groups” and “periods”
• elements in same group have same number of electrons in their outer shells except transition metals
• elements in same group will have similar chemical properties
• elements in same period have same number of shells of electrons

Question 2

name of elements in group 1

Answer 2

alkali metals

Question 3

name of elements in group 2

Answer 3

alkaline earth metals

Question 4

elements in group 16

Answer 4

common non-metals

Question 5

elements of groups 17 are called

Answer 5

halogens

Question 6

elements of group 18 are called

Answer 6

noble gases

Question 7

reactivity down metal group

Answer 7

increases
electrons in outermost shell are further from the nucleus and so it is easier to lose electrons to form a full outer shell

Question 8

reactivity down a non-metal group

Answer 8

outermost electrons are further from the nucleus so it is harder to gain an additional electron to achieve a full outer shell

Question 9

what is inert

Answer 9

noble gases are inert meaning they do not react easily because they already have a full outer shell of electrons