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Chem 162 Midterm Exam 2 Questions and Answers

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Chem 162 Midterm Exam 2 Questions and Answers

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2025/2026

Institution CHEM 162

Module CHEM 162

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Chem 162 Midterm Exam 2 Questions and Answers

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Chem 162 Midterm Exam 2 Questions
and Answers

Isomer - ANS-each of two or more compounds with the same formula but a different
arrangement of atoms in the molecule and different properties.

metals often react with strong acids to generate ____ - ANS-metals often react with
strong acids to generate H2

Ionic Crystalline Solids - ANS-Strong Electrostatic Attraction

High Melting Point

Hard

Brittle

Insulator

Soluble

Molecular Crystalline Solids - ANS-Weak Intermolecular Forces (<100kJ/mol)

Low Melting Point and Boiling Point

Fairly Soft

Insulator

Soluble

Non-Metal Atoms - ANS-Covalent Bonds

High Melting Point

Hard

Brittle

Insulator/Semiconductor/Conductor

, Metal Atoms - ANS-Metallic Bonds

Low to High Melting Point

Very High Boiling Point

Soft to Hard

Malleable

Conductor

Atomic Orbital - ANS-regions of space around the nucleus of an atom where an electron
is likely to be found (single, double, triple bonds & lone pairs)

Bonding in Metals (AO, MO, Energy Gap, Density) - ANS-↑ AO

↑ MO

↓ Energy Gap

↑Density

What causes a Decrease in Enthalpy? - ANS-Non-polar species going into water --
because non-polar species don't have a way to interact with water.

Small, highly-charged ions -- because there is a high charge density

Always Spontaneous - ANS--ΔH

+ΔS

Spontaneous at Low Temperature - ANS--ΔH

-ΔS

Spontaneous at High Temperature - ANS-+ΔH

+ΔS

Spontaneous at Reverse - ANS-+ΔH

-ΔS

What dissolves with what? - ANS-Like dissolves with like:

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Number of pages: 7
Written in: 2025/2026
Type: Exam (elaborations)
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