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RUN REVIEW · Chemistry · Units 1 & 2

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11 Sep 2026, 9:00 p.m.

20Serious score
01 One mole of molecules contains approximately
A 1 molecule This does not satisfy the stated relationship.
B \(6.02\times10^{23}\) molecules One mole contains Avogadro’s number of entities.
C \(22.4\times10^3\) molecules This does not satisfy the stated relationship.
D \(6.02\times10^{-23}\) molecules This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Avogadro constant · answered at 100 ms

02 A student is checking a worked solution. Which equation conserves atoms and charge?
A \(\mathrm{Ag^++Cl^-\rightarrow Ag+Cl}\) This does not satisfy the stated relationship.
B \(\mathrm{Ag^++2Cl^-\rightarrow AgCl}\) This does not satisfy the stated relationship.
C \(\mathrm{Ag+Cl^-\rightarrow AgCl^-}\) This does not satisfy the stated relationship.
D \(\mathrm{Ag^+(aq)+Cl^-(aq)\rightarrow AgCl(s)}\) The net ionic equation is balanced for atoms and charge.

Written for icaijy.com · U1 · Equations · answered at 100 ms

03 During a one-minute revision round: Mixing \(\mathrm{AgNO_3(aq)}\) and \(\mathrm{NaCl(aq)}\) forms
A \(\mathrm{Ag(s)}\) This does not satisfy the stated relationship.
B \(\mathrm{NaNO_3(s)}\) This does not satisfy the stated relationship.
C \(\mathrm{AgCl(s)}\) Silver chloride is insoluble; sodium nitrate remains aqueous.
D \(\mathrm{Cl_2(g)}\) This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Precipitation · answered at 100 ms

04 Which response best completes this VCE-style item? Metals are malleable because
A layers of positive ions can slide while metallic bonding persists Non-directional attraction to delocalised electrons survives sliding.
B all metals have low melting points This does not satisfy the stated relationship.
C their molecules are soft This does not satisfy the stated relationship.
D electrons are fixed between atom pairs This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Metals · answered at 100 ms

05 At SLC, the molar volume used in the VCAA data book is
A \(24.8\ \mathrm{L\ mol^{-1}}\) At 25 °C and 100 kPa, the data-book value is 24.8 L mol⁻¹.
B \(22.4\ \mathrm{L\ mol^{-1}}\) This does not satisfy the stated relationship.
C \(100\ \mathrm{L\ mol^{-1}}\) This does not satisfy the stated relationship.
D \(8.31\ \mathrm{L\ mol^{-1}}\) This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Gases · answered at 100 ms

06 An unknown absorbance lies beyond all standards on a calibration graph. The best action is to
A dilute it into the calibrated range and account for dilution Reliable interpolation requires the unknown to lie within the calibrated range.
B extrapolate indefinitely This does not satisfy the stated relationship.
C change the wavelength after measuring This does not satisfy the stated relationship.
D report zero concentration This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Calibration curves · answered at 100 ms

07 An atom has 17 protons and 18 electrons. It is
A \(\mathrm{Cl^+}\) This does not satisfy the stated relationship.
B \(\mathrm{Ar}\) This does not satisfy the stated relationship.
C \(\mathrm{Cl^-}\) One extra electron gives chlorine a −1 charge.
D \(\mathrm{Cl}\) This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Atomic structure · answered at 100 ms

08 Which response best completes this VCE-style item? Reprocessing used aluminium into new aluminium products is closest to
A complete biodegradation This does not satisfy the stated relationship.
B carbon capture This does not satisfy the stated relationship.
C a linear economy This does not satisfy the stated relationship.
D a circular economy Material is recovered and returned to productive use.

Written for icaijy.com · U1 · Sustainability · answered at 100 ms

09 Which response best completes this VCE-style item? In the Brønsted–Lowry model, a base
A accepts a proton A Brønsted–Lowry base is a proton acceptor.
B accepts an electron only This does not satisfy the stated relationship.
C must contain hydroxide This does not satisfy the stated relationship.
D donates a proton This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Acids and bases · answered at 100 ms

10 A student is checking a worked solution. An atom has 17 protons and 18 electrons. It is
A \(\mathrm{Cl}\) This does not satisfy the stated relationship.
B \(\mathrm{Cl^-}\) One extra electron gives chlorine a −1 charge.
C \(\mathrm{Cl^+}\) This does not satisfy the stated relationship.
D \(\mathrm{Ar}\) This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Atomic structure · answered at 100 ms

11 Which response best completes this VCE-style item? The pH of \(1.0\times10^{-3}\ \mathrm{M\ HCl}\) is
A 11.0 This does not satisfy the stated relationship.
B 7.0 This does not satisfy the stated relationship.
C 1.0 This does not satisfy the stated relationship.
D 3.0 For strong HCl, \([H^+]=10^{-3}\), so pH = 3.

Written for icaijy.com · U2 · pH · answered at 100 ms

12 During a one-minute revision round: The strongest intermolecular attraction between water molecules is
A hydrogen bonding O–H bonds allow hydrogen bonding between molecules.
B metallic bonding This does not satisfy the stated relationship.
C covalent network bonding This does not satisfy the stated relationship.
D ionic bonding This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Intermolecular forces · answered at 100 ms

13 A student is checking a worked solution. A highly cross-linked polymer is usually
A an ionic solution This does not satisfy the stated relationship.
B easily remelted as a thermoplastic This does not satisfy the stated relationship.
C thermosetting Cross-links prevent chains sliding when heated.
D a monatomic gas This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Polymers · answered at 100 ms

14 A student is checking a worked solution. Two isotopes of the same element must have the same number of
A neutrons This does not satisfy the stated relationship.
B nucleons This does not satisfy the stated relationship.
C electrons in every ion This does not satisfy the stated relationship.
D protons Atomic number, hence proton number, defines the element.

Written for icaijy.com · U1 · Isotopes · answered at 100 ms

15 Which equation conserves atoms and charge?
A \(\mathrm{Ag^+(aq)+Cl^-(aq)\rightarrow AgCl(s)}\) The net ionic equation is balanced for atoms and charge.
B \(\mathrm{Ag+Cl^-\rightarrow AgCl^-}\) This does not satisfy the stated relationship.
C \(\mathrm{Ag^++Cl^-\rightarrow Ag+Cl}\) This does not satisfy the stated relationship.
D \(\mathrm{Ag^++2Cl^-\rightarrow AgCl}\) This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Equations · answered at 100 ms

16 A student is checking a worked solution. Mixing \(\mathrm{AgNO_3(aq)}\) and \(\mathrm{NaCl(aq)}\) forms
A \(\mathrm{AgCl(s)}\) Silver chloride is insoluble; sodium nitrate remains aqueous.
B \(\mathrm{Ag(s)}\) This does not satisfy the stated relationship.
C \(\mathrm{NaNO_3(s)}\) This does not satisfy the stated relationship.
D \(\mathrm{Cl_2(g)}\) This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Precipitation · answered at 100 ms

17 Which response best completes this VCE-style item? The strongest intermolecular attraction between water molecules is
A covalent network bonding This does not satisfy the stated relationship.
B metallic bonding This does not satisfy the stated relationship.
C hydrogen bonding O–H bonds allow hydrogen bonding between molecules.
D ionic bonding This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Intermolecular forces · answered at 100 ms

18 The correct formula for aluminium sulfate is
A \(\mathrm{AlSO_4}\) This does not satisfy the stated relationship.
B \(\mathrm{Al_3SO_4}\) This does not satisfy the stated relationship.
C \(\mathrm{Al_2(SO_4)_3}\) Two Al³⁺ balance three sulfate ions.
D \(\mathrm{Al(SO_4)_2}\) This does not satisfy the stated relationship.

Written for icaijy.com · U1 · Formulae · answered at 100 ms

19 Which response best completes this VCE-style item? Oxidation is defined as
A loss of electrons Oxidation is electron loss.
B gain of protons only This does not satisfy the stated relationship.
C formation of a precipitate This does not satisfy the stated relationship.
D gain of electrons This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Redox · answered at 100 ms

20 During a one-minute revision round: A strong acid differs from a weak acid because the strong acid
A ionises to a greater extent in water Strength describes extent of ionisation, not concentration.
B must be more concentrated This does not satisfy the stated relationship.
C contains more hydrogen atoms This does not satisfy the stated relationship.
D has a larger molar mass This does not satisfy the stated relationship.

Written for icaijy.com · U2 · Acids and bases · answered at 100 ms

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