Reactivity of metals

Question 1

what is the general equation for metals reacting with water

Answer 1

alkaline metal + water = metal hydroxide + hydrogen gas

Question 2

hydroxide ion charge

Answer 2

-1

Question 3

what type of reaction occurs when a metal is mixed with an acid

Answer 3

exothermic reaction as heat is produced

Question 4

general equation for metal acid reaction

Answer 4

metal + acid = metal salt and hydrogen gas

Question 5

chloride charge

Answer 5

cl-

Question 6

sulphate charrge

Answer 6

SO4 2-

Question 7

nitrate charge

Answer 7

NO3 -1

Question 8

what is a hydrogen pop teest used to indicate

Answer 8

if metal acid reactions have occured

Question 9

what is done in a hydrogen pop test

Answer 9

a metal is placed in an acid, a lit splint is then placed in a tube, if a pop sound is heard, hydrogen gas has been produced and a reaction has occured, this is because hydrogen is highly flammable and will react readily with oxygen in the oresence of a flame

Question 10

general equation for when metals react with oxygen

Answer 10

metal + oxygen = metal oxide

Question 11

reactivity

Answer 11

a term used to describe the ease with which a chemical can undergo a reaction

Question 12

gold and platinum reactivity

Answer 12

essentially unreactive and are described as inert

Question 13

reactivity of group 1 metals

Answer 13

a high reactivity with water, rapidly react with oxygen

Question 14

transition metals reactivity

Answer 14

least reactive with water, form rust when exposed to oxygen and water over a period of time

Question 15

group 2 reactivity with oxygen

Answer 15

react with O2 but usually require heat to start the reaction

Question 16

reactivity in the periodic table

Answer 16

main group metals increases down a group decreases left to right across a period