Chemistry F4 CHP 2

Boiling is the process of liquid changing phases to gas. Is heat energy absorbed or released ?

Pendidihan adalah proses penukaran cecair kepada gas. Tenaga haba diserap atau dibebaskan?

• Absorbed / Diserap

• Released / Dibebaskan

• bro, obviously no change la!

Isotopes have many uses. What is the use of Cobalt-60?

Isotop mempunyai pelbagai kegunaan. Apakah kegunaan Kobalt-60?

• Check thickness of paper

  Mengawal ketebalan kertas

• Nuclear energy

  Menjana tenaga nuklear

• Destroy cancer cells

  Menghampuskan sel-sel kanser

FIRST 20 ELEMENTS

Argon: Yo! I'm 18th in the Periodic Table!

Calcium : Yo! I'm 20th!

So who is 19th?

• Lithium

• Potassium

• Chlorine

• Silicone

Diffusion is quickest in which state of matter?

• Solid

• Liquid

• Gas

• All the same

What is the state of matter of naphthalene between D - E ?

• Liquid

• Liquid + Gas

• Liquid + Solid

• Gas

What is the use of Conical Flask?

• To ensure the napthalene does not spill on to the lab table

• To help keep the test tube straight

• To ensure even cooling

• To ensure even heating

Sublimation is the process of changing states from solid to gas and vice versa. Which of the following DOES NOT go though sublimation?

• solid CO₂ (dry ice)

• sugar

• mothballs (ubat gegat)

• sulphur powder

Which state of matter has the lowest kinetic energy?

Jirim manakah mempunyai tenaga kinetik yang paling rendah?

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• 
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Nitrogen is the 7th element in the Periodic Table. What is the electron arrangement of Nitrogen atom?

• 2.7

• 2.8.7

• 2.5

• 2.17

Hi. I'm yellow when im hot (ahem ahem) but white when im cool. What am I ?

• CuO, Copper Oxide

• PbO, Lead (ii) Oxide

• ZnO, Zinc Oxide

• Al₂O₃ , Aluminium Oxide