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MIDTERMS (2ND SEM) - G12 STEM 1 > CHEM (DEF OF TERMS) > Flashcards

CHEM (DEF OF TERMS) Flashcards

1
Q

This is a homogenous part of the system in contact with other parts of the system but separated from them by a well-defined boundary.

A

Phase

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2
Q

Solid to liquid?

A

Melting

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3
Q

Liquid to solid?

A

Freezing

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4
Q

Liquid to gas?

A

Evaporation

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5
Q

Gas to liquid?

A

Condensation

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6
Q

Solid to gas?

A

Sublimation

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7
Q

Gas to solid?

A

Deposition

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8
Q

Enumerate the kinds of intermolecular forces based on strength.

A
  1. Ion-dipole
  2. Hydrogen bond
  3. Dipole-dipole
  4. London dispersion
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9
Q

This is an IMF (Intermolecular Force) between an ion an a polar molecule.

A

Ion-dipole

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10
Q

This is an IMF between H and either the elements N, O, or F.

A

Hydrogen bond

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11
Q

This is an IMF between polar molecules.

A

Dipole-dipole

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12
Q

This an IMF that arises as a results of temporary dipoles induced in atoms or molecules.

A

Dispersion forces

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13
Q

This is the case with which the electron distribution in the atom or molecule can be distorted.

A

Polarizability

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14
Q

A property of liquid that requires a certain amount of energy to stretch or increase surface of a liquid by a unit area.

A

Surface Tension

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15
Q

A property of liquid that is the intermolecular attraction between LIKE molecules.

A

Cohesion

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16
Q

A property of liquid that is the attraction between UNLIKE molecules.

A

Adhesion

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17
Q

A property of liquid that is the measure of a fluid’s resistance to flow.

A

Viscocity

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18
Q

A property of solid that is rigid and has a long-range order where atoms, molecules, or ion occupy specific predictable positions.

A

Crystalline Solid

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19
Q

A property of solid that doesn’t possess a well-defined arrangement and long-range molecular order.

A

Amorphous Solid

20
Q

The basic repeating structural unit of a crystallin solid.

A

Unit Cell

21
Q

A kind of crystal that is held together by electrostatic attraction.

A

Ionic crystals

22
Q

A kind of crystal that is held together by covalent bonds.

A

Covalent crystals

23
Q

A kind of crystal that is held together by intermolecular forces,

A

Molecular crystals

24
Q

A kind of crystal that is held together by metallic bonds.

A

Metallic crystals

25
Q

This is a combination of two or more components that are not chemically combined and retained their identities.

Can be physically separated.

A

Mixture

26
Q

A kind of mixture that has component particles that cant be distinguised. A solution.

A

Homogenous

27
Q

A kind of mixture that has easily recognisable components.

A

Heterogenous

28
Q

A common technique that separates a mixture based on the boiling points of the components.

A

Distillation

29
Q

A common technique that separates iron from other objects.

A

Magnets

30
Q

A common technique that separates a mixture according to centrifuge.

A

Centrifuge

31
Q

A mixture that appears to be a single substance but has two or more substances that are evenlu distributed amongst each other.

A

Solution

32
Q

The part of a solution being dissolved.

A

Solute

33
Q

The part of the solution that dissolves the solute.

A

Solvent

34
Q

A process in which particles of substances separate and spread evenly amongs each other.

A

Dissolving

35
Q

A classification of solution that contains the maximum quantity of solute that dissolves at a temperature.

A

Saturated

36
Q

A classification of solution that contains more solute than is possible to dissolved.

A

Unsaturated

37
Q

This is the amount of solute needed to make a saturated solution using a given amount of solvent at a certain temperature.

A

Solubility

38
Q

Methods affecting solubility?

Hint: M.H.C.

A
  1. Mixing
  2. Heating
  3. Crushing
39
Q

This is a mixture in which particles of a material are dispersed throughout a liquid or gas but are large enough that they settle out.

A

Suspension

40
Q

This is a mixture in which particles of a material are dispersed throughout a liquid or gas but are not large enough to settle..

A

Colloids

41
Q

A light scattering by particles in a colloid or else particles in a very fine suspension.

A

Tyndall Effect

42
Q

List the colligative properties.

Hint: V.B.M.O.

A
  1. Vapor Pressure
  2. Boiling Point
  3. Melting Point
  4. Osmotic Pressure
43
Q

A colligative property that is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system.

A

Vapor Pressure

44
Q

A colligative property that is a phenomenon that the boiling point of a liquid will be higher when another compound is added, meaning that a solution has a higher boiling point than a pure solvent.

A

Boiling Point

45
Q

A colligative property that is a phenomenon of reduction of the melting point of a material with reduction of its size.

A

Melting Point

46
Q

A colligative property that is the minimum pressure which needs to be applied to a solution to prevent the inward flow of water across a semipermeable membrane.

A

Osmotic Pressure

MIDTERMS (2ND SEM) - G12 STEM 1 (8 decks)

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