How is lead(II) chloride obtained?

Crystallisation → evaporation

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Questions 19

Answers

1
Which atom has fewer neutrons?
Atom Y
Not enough info
Both are equal
Atom X
2
Which volume contains 20 cm³ of oxygen?
40 cm³
100 cm³
20 cm³
80 cm³
3
Which atom has more electrons?
Not enough info
Atom Y
Both are equal
Atom X
4
True or false: Sodium is more abundant than gold.
False
True
5
Which properties do Group 1 metals have?
1, 2, 3 and 4
1 and 2
2 and 3
1 only
6
What decreases as alkane mass increases?
Melting point
Viscosity
Boiling point
Flammability
7
Which gas is produced from HCl and ammonium carbonate?
Nitrogen
Hydrogen
Carbon dioxide
Oxygen
8
What is the reaction of magnesium with steam?
Mg + 2H2O → MgOH2 + H2
Mg + H2O → no reaction
Mg + H2O → MgO + H2
Mg + 2H2O → Mg(OH)2 + H2
9
Which substance is liquid at -150 °C?
Nitrogen
Oxygen
Argon
Carbon dioxide
10
How is lead(II) chloride obtained?
Filtration → washing
Evaporation → washing
Crystallisation → evaporation
Filtration → evaporation
11
What type of bonding is in compound XY2?
Covalent
Metallic
Ionic
Hydrogen
12
What type of compound is X?
Monounsaturated
Hydrocarbon
Polyunsaturated
Alkane
13
Which compound controls soil acidity?
Calcium carbonate
Calcium chloride
Calcium oxide
Calcium hydroxide
14
What measures 17.20 cm³ of acid?
Burette
Test tube
Pipette
Measuring cylinder
15
Which metal oxide is amphoteric?
Metal D
Metal A
Metal C
Metal B
16
Which pair produces an alkaline solution?
P and Q
R and S
P and S
Q and R
17
What is the formula for iron(II) sulfate?
FeSO4
Fe(SO4)2
FeS
Fe2SO4
18
Which represents a substitution reaction?
CH4 + Cl2 → CH3Cl + HCl
C3H6 + Cl2 → C3H6Cl2
(C2H4)n → [-CH2CH2-]n
C10H22 → C4H8 + C6H14
19
What is the chemical formula for water?
HO2
OH
H2O2
H2O

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