134 terms

iGCSE Chemistry: Ions - test myself

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How many electron shells do the elements in the second period have?
2
How many electron shells do the elements in the third period have?
3
How many electrons can the first shell hold?
2
How many electrons can the first, second and third shells hold?
First 2, second 8, third 8
How many electrons can the second shell hold?
8
How many electrons can the third shell hold?
8
How many electrons in a calcium atom?
20
How many electrons in a chlorine atom?
17
How many electrons in a helium atom?
2
How many electrons in a magnesium atom?
12
How many electrons in a nitrogen atom?
7
How many electrons in a sodium atom?
11
How many electrons in an argon atom?
18
How many electrons in the outer shell of group 1 elements?
1
How many electrons in the outer shell of group 2 elements?
2
How many electrons in the outer shell of group 3 elements?
3
How many electrons in the outer shell of group 4 elements?
4
How many electrons in the outer shell of group 5 elements?
5
How many electrons in the outer shell of group 6 elements?
6
How many electrons in the outer shell of group 7 elements?
7
Write the electronic configuration of argon
2,8,8
Write the electronic configuration of potassium
2,8,8,1
On the Periodic table what is the meaning of the word Group? What does that tell us about the electron configuration of the atom?
same number of electrons in the outer shell
On the Periodic Table what is the meaning of the word Period? What does that tell us about the electron configuration of the atom?
same number of electron shells
Explain, in terms of electrons, why isotopes have the same chemical properties
Isotopes have the same number of electrons
Why do elements in the same group of the periodic table have similar chemical properties?
Elements in the same group of the periodic table have the same number of electrons in their outer shell
Explain, in terms of the arrangement of electrons in its atoms, why neon is very unreactive
Neon has 8 electrons in the outer shell, so it is full. Therefore it does not easily gain or lose electrons
What are the elements in group 0 called?
Noble gases
What is special about the elements in group 0?
They are very unreactive (because they have full outer electron shells)
Which group of atoms has a full outer shell?
Group 0, the noble gases
Balance the equation for the reaction: ___ HCl(aq) + ___ MnO₂(s) → ___MnCl₂(aq) + ___H₂O(l) + ___ Cl₂(g)
4 HCl(aq) + MnO₂(s) → MnCl₂(aq) + 2H₂O(l) + Cl₂(g)
Balance the following equation: WO₃ + H₂ → W + H₂O
WO₃ + 3H₂ → W + 3H₂O
What do each of the following state symbols represent: (s), (l), (g), (aq)
(s) - solid. (l) - liquid. (g) - gas. (aq) - aqueous (in solution)
All the atoms in group 1 have 1 electron in their outer shell. What charge ions do they form?
+1
All the atoms in group 2 have 2 electron in their outer shell. What charge ions do they form?
+2
All the atoms in group 3 have 3 electron in their outer shell. What charge ions do they form?
+3
All the atoms in group 5 have 5 electron in their outer shell. What charge ions do they form?
-3
All the atoms in group 6 have 6 electron in their outer shell. What charge ions do they form?
-2
All the atoms in group 7 have 7 electron in their outer shell. What charge ions do they form?
-1
Describe, in terms of electrons, the formation of sodium chloride
An atom of sodium loses one electron. An atom of chlorine gains one electron
How many electrons in a calcium ion?
18
How many electrons in a carbon ion?
n/a
How many electrons in a chloride ion?
18
How many electrons in a fluoride ion?
10
How many electrons in a helium ion?
n/a
How many electrons in a hydrogen ion?
0
How many electrons in a lithium ion?
2
How many electrons in a magnesium ion?
10
How many electrons in a neon ion?
n/a
How many electrons in a nitride ion?
10
How many electrons in a phosphide ion?
18
How many electrons in a potassium ion?
18
How many electrons in a silicon ion?
n/a
How many electrons in a sodium ion?
10
How many electrons in a sulfide ion?
18
How many electrons in an aluminum ion?
10
How many electrons in an argon ion?
n/a
How many electrons in an oxide ion?
10
If an atom gains electrons what happens to its charge?
becomes more negative
If an atom loses electrons what happens to its charge?
becomes more positive
State the electron configuration of the aluminium ion
2,8
State the electron configuration of the calcium ion
2,8,8
State the electron configuration of the chloride ion
2,8,8
State the electron configuration of the fluoride ion
2,8
State the electron configuration of the magnesium ion
2,8
State the electron configuration of the nitride ion
2,8
State the electron configuration of the oxide ion
2,8
State the electron configuration of the phosphide ion
2,8,8
State the electron configuration of the potassium ion
2,8,8
State the electron configuration of the sodium ion
2,8
State the electron configuration of the sulfide ion
2,8,8
What is the formula of the aluminium ion?
Al³⁺
What is the formula of the beryllium ion?
Be²⁺
What is the formula of the bromide ion?
Br¹⁻
What is the formula of the calcium ion?
Ca²⁺
What is the formula of the chloride ion?
Cl¹⁻
What is the formula of the fluoride ion?
F¹⁻
What is the formula of the gallium ion?
Ga³⁺
What is the formula of the iodide ion?
I¹⁻
What is the formula of the lithium ion?
Lī¹⁺
What is the formula of the magnesium ion?
Mg²⁺
What is the formula of the nitride ion?
N³⁻
What is the formula of the oxide ion?
O²⁻
What is the formula of the phosphide ion?
P³⁻
What is the formula of the potassium ion?
K¹⁺
What is the formula of the sodium ion?
Na¹⁺
What is the formula of the strontium ion?
Sr²⁺
What is the formula of the sulfide ion?
S²⁻
Zinc phosphide, Zn₃P₂ is an ionic compound. The formula of the zinc ion is Zn²⁺. Deduce the formula of the phosphide ion
P³⁻
State the formula for the copper (II) ion
Cu²⁺
State the formula for the iron (II) ion
Fe²⁺
State the formula for the iron (III) ion
Fe³⁺
State the formula for the lead (II) ion
Pb²⁺
State the formula of the hydrogen ion
H⁺
State the formula of the silver ion
Ag⁺
State the formula of the zinc ion
Zn²⁺
What is the formula for aluminium chloride?
AlCl₃
What is the formula for aluminium oxide?
Al₂O₃
What is the formula for aluminium sulfide?
Al₂S₃
What is the formula for calcium bromide?
CaBr₂
What is the formula for calcium nitride?
Ca₃N₂
What is the formula for copper (II) fluoride
CuF₂
What is the formula for copper (II) sulfide?
CuS
What is the formula for iron (II) oxide
FeO
What is the formula for iron (II) phosphide?
Fe₃P₂
What is the formula for iron (III) bromide?
FeBr₃
What is the formula for iron (III) nitride
FeN
What is the formula for lithium chloride?
LiCl
What is the formula for lithium nitride?
Li₃N
What is the formula for magnesium chloride?
MgCl₂
What is the formula for magnesium iodide?
MgI₂
What is the formula for magnesium oxide?
MgO
What is the formula for potassium bromide?
KBr
What is the formula for potassium chloride?
KCl
What is the formula for potassium sulfide?
K₂S
What is the formula for sodium chloride?
NaCl
What is the formula for sodium fluoride?
NaF
What is the formula for sodium oxide?
Na₂O
What is the formula for sodium phosphide?
Na₃P
What is the formula for strontium phospide?
Sr₃P₂
What is the formula for vanadium (V) oxide?
V₂O₅
Draw a dot and cross diagram to show the arrangement of electrons in each of the ions in magnesium chloride, MgCl₂
Draw a dot and cross diagram to show the arrangement of electrons in each of the ions in potassium oxide, K₂O
Draw a dot and cross diagram to show the arrangement of electrons in each of the ions in sodium chloride, NaCl
How can atoms get a full outer shell?
Either the transfer (ionic) or sharing (covalent) of electrons
State the fomula for the two ions in vanadium (V) oxide
V⁵⁺ and O²⁻
Explain the term ionic bond
An ionic bond is the strong electrostatic attraction between oppositely charged ions
State the fomula for the two ions in iron (II) sulfide
Fe²⁺ and S²⁻
What holds ions together?
Ions are held together by a strong electrostatic attraction between the oppositely charged ions
When are ions attracted to each other?
When the ions are oppositely charged
If copper chloride has the formula CuCl₂, what is the formula of the copper ion?
Cu²⁺
If iron chloride has the formula FeCl₂, what is the formula of the iron ion?
Fe²⁺
If iron chloride has the formula FeCl₃, what is the formula of the iron ion?
Fe³⁺
If iron oxide has the formula FeO, what is the formula of the iron ion?
Fe²⁺