Worksheetschemical equation
Total questions: 15
Worksheet time: 9mins
4Ca(OH)2
2KI + ____Cl2 → 2KCl + I2
What state of matter is this substance?
solid
liquid
gas
aqueous
Identify the number in blue.
Product
Reactant
Coefficient
Subscript
When balancing this equation, Fe + Cl2 → FeCl3, the correct coefficient for Cl2?
1
2
3
4
What does this symbol Δ above the arrow mean?
a precipitate is form
heat is supplied
a calalyst is needed
electricity is needed
Balance this equation, CaCO3(s) → CaO(s) + CO2(g)?
3,1,2
1,1,1
1,3,1
2,6,3
Which of the following chemical formulae is correct?
Li2O
KBr2
Al3Cl
MgNO3
1.04 g of metal M react with 0.48 g of oxygen to form M oxide. Determine the empirical formula of M oxide.
[ relative atomic mass : O = 16 ; M = 52 ]
MO
MO2
M2O3
M3O2
Diagram below shows the set-up of apparatus to determine the empirical formula of magnesium oxide.
Which of the following statement is true for the lifting and closing of the lid quickly and occasionally during heating?
To avoid the pressure in the crucible dish
To avoid the crucible dish from cracking
To avoid the white fumes from escaping
To avoid water vapour from entering the crucible dish
The following equation represents a reaction.
3H2 (g) + N2 (g) → 2NH3 (g)
What is the relative molecular mass of the product?
[ Relative atomic mass : H=1 ; N=14 ]
[Jisim atom relatif : H=1 ; N=14 ]
2
17
28
34
