Chapter 3: Metals and Acids

metal oxide

a metal that has bonded with oxygen after being heated

displacement reaction

a more reactive metal takes the place of a less reactive metal, making the more reactive metal a compound while the less reactive one becomes an element

a salt

when an acid and a metal react, the hydrogen in the acid is replaced by a metal, therefore making this compound

metal hydroxide + hydrogen gas

produced by reacting very reactive metals with cold water

the set up in which magnesium can be reacted with steam

a glass tube with a magnesium ribbon and a piece of mineral wool soaked in water inside, which is clamped and heated with a Bunsen burner

test for hydrogen

when reacting a metal and a salt, the gas can be collected in an upturned test tube. If a lit splint is inserted and is followed by a squeaky ‘pop’ sound, the gas tested for is present.

three main acids

hydrochloric acid, sulfuric acid, nitric acid

metals which are more reactive than hydrogen (decreasing reactivity)

potassium, sodium, barium, calcium, magnesium, aluminium, zinc, iron, nickel

metals which are less reactive than hydrogen (decreasing reactivity)

copper, mercury, silver, gold, platinum

Salt and hydrogen gas

Produced when metal is reacted with an acid