How many VCAA Chemistry questions cover How are organic compounds categorised and synthesised??

AusGrader has 132 VCAA Chemistry questions on How are organic compounds categorised and synthesised?, all with instant AI grading and detailed marking feedback.

VCAA (VCE) Chemistry — How are organic compounds categorised and synthesised? Questions & Answers | AusGrader

Q7

2021

QCAA

Paper 1

1 mark

Q7

1 mark

Identify which molecule is an amide.

A

CH $_3$ CH $_2$ CN

B

CH $_3$ CH $_2$ NH $_2$

C

NH $_4$ CH $_3$ COO

D

CH $_3$ CONHCH $_3$

Q9

2024

QCAA

Paper 1

1 mark

Q9

1 mark

Polytetrafluorethene (PTFE) has a higher melting point than polypropene (PP) due to the

A

C–F bonds being non-reactive.

B

fluorine atoms forming stable C–F covalent bonds.

C

dispersion forces between closely packed fluorocarbon chains.

D

dipole–dipole interaction between fluorine and carbon atoms within the fluorocarbon chain.

Q22

2024

QCAA

Paper 1

3 marks

Q22a

2 marks

Describe the type of reaction that occurs when amino acid monomers are joined to form polypeptides.

A condensation reaction occurs when amino acid monomers are joined to form a peptide bond and water is removed.

Marking Criteria

Descriptor	Marks
Identifies condensation reaction	1
Describes that water is removed when the amino acids are joined to form polypeptides	1

Q22b

1 mark

Identify the bond formed when amino acid monomers join to form a dipeptide.

Descriptor	Marks
Identifies peptide bond	1

Q21

2022

QCAA

Paper 1

4 marks

Q21a

2 marks

Identify whether 2-bromopropane is a saturated or unsaturated compound. Explain your reasoning.

2-bromopropane is saturated because it contains only single bonds.

Marking Criteria

Descriptor	Marks
Identifies 2-bromopropane is saturated	1
Indicates 2-bromopropane contains only single bonds	1

Q21b

2 marks

Determine whether 2-bromopropane is a primary, secondary or tertiary halogenoalkane. Explain your reasoning.

2-bromopropane is a secondary halogenoalkane, because the carbon that the bromine is attached to two carbon atoms.

Marking Criteria

Descriptor	Marks
Determines 2-bromopropane is a secondary halogenoalkane	1
Explains that the bromine (halogen) is bonded to a carbon that is attached to two other carbon atoms	1

Q25

2024

QCAA

Paper 1

3 marks

Q25

Maltose is a disaccharide formed when two monomers of $\alpha$ -glucose are joined.

Q25a

1 mark

Identify whether $\alpha$ -glucose is an aldose or ketose monosaccharide.

Descriptor	Marks
Identifies that glucose is an aldose monosaccharide	1

Q25b

2 marks

Distinguish between $\alpha$ -glucose and $\beta$ -glucose.

$\alpha$ -glucose has its OH group attached on the opposite side of the carbon ring (trans) to the CH $_2$ OH group, while $\beta$ -glucose has its OH group attached on the same side of the ring (cis) as the CH $_2$ OH group.

Marking Criteria

Descriptor	Marks
Identifies that $\alpha$ -glucose has its OH group and CH $_2$ OH group attached to opposite sides of ring (trans)	1
Identifies that $\beta$ -glucose has its OH group and CH $_2$ OH group attached on the same side of the ring (cis)	1

VCAA Chemistry How are organic compounds categorised and synthesised?

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