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WorksheetsSussy Chemistry 2
Total questions: 42
Worksheet time: 1hrs 5mins
Which following about noble gas is correct?
Unreactive
Colourless gas
Reative
High density
Which is the uses of Argon?
Fill balloons
Advertising signs
Eye surgery laser
Make tungsten filament
Which following is correct about alkali metals?
Low density, but increases down the group
Grey - silvery
Soft, the softness increases down the group
Trends of melts is increase down the group
The reactive of halogens is....
Increase down the group
Decrease down the group
No changes
Which following is correct about the product in the reaction of water and alkali metals?
Only Hydrogen
Metal oxide
Oxygen + hydrogen
Metal hydroxide + hydrogen
Which following is wrong about flame test?
Copper ion = blue - green
Barium ion = Red - orange
Potassium ion = lilac
Sodium = brown
Which halogen is liquid form in a room temperature?
I2(Iodine)
F2
Br2
At2
Cl2
Choose the correct color of halogens
I2(Iodine)(aq)=yellow
I2(Iodine)(l) =purple
Br2 (aq)=orange
Br2(l)=red brown
Which is basic oxide in period 3?
Na
Al
Cl
S
Select the correct information about Period 3
The atomic size decrease from Na to Ar
The valance electron decrease across period 3
Si is a basic oxide
2.8.4 is metalloid
Which has a highest concentration of H+ ion?
HNO3
CH3COOH
H3PO4
HCOOH
HCL + H2O = H3O + Cl-
Base on the equation, which is base?
HCL + H2O
Cl-
HCL
H2O
Which is correct about the uses of acid?
dilute sulfuric acid = make fertilisers
Concentrated sulfuric acid = as dehydrating agent
Ethanoic acid = to preserve fruits
Phosphorate acid = to make vinegar
Which following is correct about uses of base / Alkali?
Ammonia = to make nitric acid
Sodium hydroxide = make soup
Potassium hydroxide = make detergents
Calcium hydroxide = make bricks
Phosphoric acid (aqua) +Iron (s)
What is the product of the equation?
FePO4+H20
Fe3(PO4)2+H2
Fe3(PO4)2+H2O
Fe(PO4)2+H20
C2H4(g)+4KMnO4(aq)=4MnO2(aq)+4KOH(aq)+2CO2(g)
Based on the equation, which is oxidising agent?
C2H4
KMnO4
MnO2
KOH
What is the oxidation state of K, N and O in KNO2?
K=+2,N=+3,O=-1
K=-1,N=+2,O=+2
K=+4,N=-2,O=-2
K=+1,N=+3,O=-2
What is the colour changes when added water to anhydrous cobalt(II)sulfate?
Blue to pink
Blue to white
Green to pink
Red brown to pink
All hydroxide insoluble, except....
Group 1, ammonium
Group 1
Group 1,Zn,ammonium
Group 1, Ca, Ba, ammonium
Which is insoluble salt?
Lead(II)chloride
Barium chloride
Lead(II)sulfate
Lead(II)carbonate
Sodium carbonate
How to prepare Magnesium carbonate?
Precipitation
Titration
By chemical properties of acid
Combustion
What is required to prepare silver chloride?
Silver nitrate
Hydrochloric acid
Sodium chloride
Silver oxide
Which following can make copper(II)Sulfate?
CuO
Cu
H2SO4
CuCO3
What is the composition of bronze?
Copper, tin
Copper, zinc
Tin, antimony, copper
Copper, nickel
Impurities have ___ melting point than compound
Higher
Lower
Take a rest
Z
Zz
Zzz
💤
What is the product of heating effect on metal nitrate?
Metal oxide + Nitrogen dioxide + oxygen
Metal dioxide + Nitrogen dioxide + oxygen
Metal oxide + Nitrogen oxide + water
Metal oxide + Nitrogen oxide + oxygen
What is rust?
Zinc (II) oxide
Iron (III) oxide
Aluminum (III) oxide
Cu(II) dioxide
Which is correct about exothermic ?
Release heat
Bond breaking
Enthalpy change is positive
Energy of reactant is lower than product
CH4(g)=C(g)+4H(g)
Chemical reaction above is....
Endothermic
Exothermic
2Mg + O2=2MgO
Chemical reaction above is.....
Endothermic
Exothermic
2A (s) + 5B(aq)=4C(g)+D(aq)
What happen to the yield of products when there is an increase in temperature in reversible reaction above?
Increase
Decrease
Find the percentage of nitrogen in NH4NO3
43.9
23.0
38.7
17.5
Which is the source of N2?
Electrolysis of seawater
By reacting natural gas (methane) with steam
Made by cracking hydrocarbons from petroleum
By fractional distillation of liquid air
What is the catalyst for Haber process?
Zn
Mg
Fe
Mn
What is the optimum temperature of Haber process?
500
600
350
450
Where is sulfur formed?
In large underground beds
In metal ore
In seawater
In fossil fuels
What is the physical properties of sulfur?
Hard yellow solid
Brittle yellow solid
Conduct electricity
Insoluble in water
What is the physical properties of SO2?
Colourless gas
Odourless
Acidic oxide
Basic oxide
How to test NO4?
Add NaOH, add aluminium foil and then heat it
Add HCl and KMnOH
Add HNO3 and barium nitrate
Add HNO3 and Ag(NO3)2
What is the result when adding sodium hydroxide to Cr3+?
Green precipitate formed,soluble in excess
Blue precipitate formed, soluble in excess
Blue precipitate formed, insoluble in excess
Green precipitate formed, insoluble in excess
CaO is.....
Soluble Salt
Insoluble Salt
