IGCSE Chemistry Britannica 6-9 (Miss Viki)

Fun

100

What colour is water?

Light Blue

200

Only element that is liquid at -273.15°C 

Helium

300

Which planet has the most sulphuric acid rain?

Venus

400

A substance that expands upon freezing?

(Chemical name only)

Dihydrogen Monoxide

500

How many grams of NaCl is in an average human body?

200g

Halogens

100

What is the product of cold dilute NaOH + Cl2?

NaCl + NaClO + H2O

200

What is the result of HCl + H2O?

H+ +Cl- ions

300

What will the colour change of this reaction be: KI + Br2 -> KBr + I2

orange to purple

400

Colour of Fluorine gas

Yellow

500

Which halogen is used in mustard gas?

Cl2

Group I

100

Flame test colour of Na

yellow

200

Observations of K + H2O

fizzing, vigorous reaction

300

Hardest group I metal

Li ;)

400

Reactivity trend of group I metals

increases down the group

500

What is the pH of the product of K + H2O

10-13

Transition metals

100

State one use of mild steel

buildings, infrastructure, tools, ships, trains, cars, machines, electrical appliances, weapons

200

What method is used to extract Al???

Electrolysis

300

What will be the product of this reaction: Zn + Cu(NO3)2

Cu + Zn(NO3)2

400

State the equation of the thermal decomposition of CuCO3

CuCO3 -> CuO + CO2

500

In the extraction of zinc, write the equation that actually yields the zinc

ZnO + C -> Zn + Co

Organic Chemistry

100

What is the general formula of alkanes?

CnH2n+2

200

Define the term fractional distillation 

The separation of chemicals into useful fractions 

300

What is the name of the compound C4H10

Butane

400

Complete and incomplete combustion of ethene

Complete combustion:

C2H4 + O2 ---> CO2 + H2O

Incomplete combustion

C2H4 + O2 ---> 2CO + 2H2O

500

Draw the addition equation: 

Propene + Bromine ---> 1-2, Dibromopropane

(Draw addition equation)

C3H6 + Br2 ---> C3H6Br2