Chapter 4 States of Matter

In an ideal gas, the volume of gas molecules is considered: (Dalam gas ideal, isipadu molekul gas dianggap:)

• Significant (Penting)

• Equal to molar volume ((Sama dengan isipadu molar)

• Negligible (Tidak ketara)

• Dependent on pressure (Bergantung kepada tekanan)

Which condition causes real gases to deviate from ideal gas behaviour? (Keadaan manakah yang menyebabkan gas sebenar menyimpang daripada tingkah laku gas ideal?)

• High temperature (Suhu tinggi)

• Low temperature (Suhu rendah)

• Low pressure (Tekanan rendah)

• Ideal molar volume (Isipadu molar ideal)

The SI unit for pressure in the ideal gas equation is: (Unit SI bagi tekanan dalam persamaan gas ideal ialah:)

• atm

• bar

• pascal (Pa)

• mmHg

In an ionic lattice, the particles are held together by: (Dalam kisi ion, zarah-zarah diikat oleh:)

• Covalent bonds

• Hydrogen bonds

• Electrostatic forces

• Metallic bonds

Diamond is hard because:

• It has metallic bonds

• It has a giant covalent structure

• It contains delocalised electrons

• It has weak van der Waals forces

Which allotrope of carbon can conduct electricity?  (Alotrop karbon manakah yang boleh mengalirkan elektrik?)

• Diamond

• Graphite

• Buckminsterfullerene

• Iodine

Why do ionic compounds conduct electricity when molten? (Mengapa sebatian ion mengalirkan elektrik apabila lebur?)

• Atoms vibrate faster  (Atom bergetar lebih laju)

• Ions are free to move (Ion bebas bergerak)

• Electrons become delocalised (Elektron menjadi terdelokalisasi)

• Molecules break apart (Molekul terurai)

Graphite is soft because:

• Covalent bonds are weak

• Van der Waals forces between layers are weak

• Electrons are fixed

• It contains hydrogen bonds

Which property is true for ice?

• Conducts electricity in solid state

• Melting point higher than iodine

• Insoluble in water

• Metallic bonding present

Nanotubes conduct electricity because:

• They contain ions

• They have delocalised electrons

• They have metallic bonds

• They have hydrogen bonds