topic 6: groups in the periodic table

Question 1

alkali metals

Answer 1

the elements in group 1 of the periodic table. they are typically soft and have relatively low melting points

Question 2

displacement

Answer 2

a chemical reaction in which a more reactive element displaces a less reactive element from its compound

Question 3

halides

Answer 3

the ions formed by halogen atoms when they gain an electron. they have a 1- charge.

Question 4

halogens

Answer 4

the elements in group 7 of the periodic table. the halogens gain an electron to form halide ions with a 1- charge. down the group the halogens get more reactive and have higher melting and boiling points

Question 5

inert

Answer 5

chemically unreactive. noble gases are inert due to their stable electronic configuration.

Question 6

noble gases

Answer 6

the elements in group 0 of the periodic table, they have a stable full outer shell of electrons which makes them very unreactive.

Question 7

oxidation

Answer 7

a reaction involving the gain of oxygen. oxidation is the loss of electrons.

Question 8

reactivity series

Answer 8

a series in which metals are arranged in order of their reactivity. this can be used to predict products from reactions

Question 9

redox reaction

Answer 9

a reaction in which both oxidation and reduction occur simultaneously

Question 10

reduction

Answer 10

a reaction involving the loss of oxygen. reduction is the gain of electron.