(a(i))[1]
Deduce the amount of oxygen gas given off after 15 seconds.
(a(ii))[2]
Plot a line on the grid in Fig. 6.1 to show how the volume of oxygen varies when a temperature of 20 ^{\circ}C is used.
(b(i))[1]
Describe how the rate of reaction changes when no catalyst is used.
(b(ii))[1]
Describe how the rate of reaction changes when a lower concentration of hydrogen peroxide is used.
(c(i))[1]
State the meaning of the word alkali.
(c(ii))[1]
Give the formula of the ion found in every alkaline solution.
(c(iii))[1]
State the colour shown by methyl orange in an alkaline solution.
(c(iv))[1]
Complete the word equation for the reaction between aqueous ammonia and hydrochloric acid. ammonia + hydrochloric acid → [BLANK]