Rusting

Pengaratan ialah kakisan besi. Pengaratan besi memerlukan kehadiran kedua-dua_______ dan ______

Rusting is the corrosion of iron. The rusting of iron requires both________ and ________.

Permukaan besi, di tengah titisan air bertindak sebagai anod. Di anod, atom besi_____________dengan

kehilangan__________dua elektron dan membentuk ion Fe2

Iron surface, in the centre of a water droplet acts as the anode. At the anode iron atoms are______________ by

___________two electrons and form Fe2+ ions.

Tulis setengah persamaan di anod

Write down half equation at anode

Permukaan besi di pinggir ttisan air bertindak sebagai katod. Elektron bergerak ke__________titisan air. Elektron diterima oleh oksigen dan molekul air membentuk ion____________Proses__________berlaku

Iron surface at the edge of the water droplet serves as the cathode. Electrons flow to the ______________of the water droplet. The electrons are received by oxygen and water molecules to form_____________ ions. A_____________

process occur

Tulis setengah persamaan di katod

Write half equation at cathode

lon Fe2+ bergabung dengan ion OH- membentuk pepejal berwarna___________Fe(OH)2, ferum(II) hidroksida,

Fe2+ ions combine with OH- ions to form________ substance, iron(II) hydroxide, Fe(OH)2

Dalam kehadiran udara, ferum(II) hidroksida _______________oleh oksigen membentuk ferum(lI) oksida

terhidrat, Fe,O,xH,O. Bahan berwarna _______________

ini dikenali sebagai karat.

In the presence of air, iron(ll) hydroxide is _______________

by oxygen to form hydrated iron III oxide,Fe2O3.xH2O.

This ________substance known as rust.

What is the difference between rusting of iron and metal corrosion?

Apakah perbezaan antara pengaratan besi dan kakisan logam?

What is the function of potassium hexacyanoferrate(III), K3 Fe(CN)6 in this experiment?

Apakah fungsi larutan kalium heksasianoferat(III), K3 Fe(CN)6 dalam eksperimen ini?

What is the function of phenolphthalein in this experiment?

Apakah fungsi larutan fenolftalein dalam eksperimen ini?