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GEN CHEM 2nd Sem > Lesson 2 > Flashcards

Lesson 2 Flashcards

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1
Q

Force that causes the molecules on the surface of a liquid to be pushed together and form a layer.

A

SURFACE TENSION

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2
Q

The resistance of fluids to flow.

A

VISCOSITY

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3
Q

This causes a high vapor pressure for a liquid.

A

VAPOR PRESSURE OF A LIQUID

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4
Q

Is the temperature at which the vapor pressure of the liquid is equal to the atmospheric pressure.

A

BOILING POINT OF A LIQUID

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5
Q

The higher the vapor pressure of a liquid, _______.

A

the lower its boiling point

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6
Q

Is the amount of heat needed to vaporize a given amount of substance as its boiling point.

A

MOLAR HEAT OF EVAPORATION

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7
Q

Characterized by an extended three dimensional arrangement

A

Solids

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8
Q

SOLID categorized into two groups:

A

-CRYSTALLINE SOLIDS
-AMORPHOUS SOLIDS

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9
Q

-form a regular repeating three-dimensional structure called a crystal lattice
-arranged in fixed geometric patterns or lattices.

A

Crystalline Solid

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10
Q

-Have a random orientation of particles.
-Arranged in random Manner

A

Amorphous Solid

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11
Q

The repetition of structural units of the substance over long atomic distances is referred to as _______.

A

long-range order.

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12
Q

The basic repeating structural unit of a crystalline solid is a _____.

A

UNIT CELL

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13
Q

The structures of crystalline solids are built from repeating units called _______.

A

CRYSTAL LATTICES

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14
Q

Crystalline solids examples

A

Ice, pyrite, amethyst, flourite

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15
Q

Amorphous metals are not transparent and have relatively lower electrical conductivity.

A

True

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16
Q

How does water molecules disrupt/break the hydrogen bond?

A

By increasing temperature or heat energy.

17
Q

How does the kinetic energy of the molecules increase?

A

KE will be increased by increasing the temperature which to the escape in IMFA.

18
Q

____________, a water property that helps to cool down the body of living organism (Human heat and vaporize sweat and process of vaporizing; vaporize plant water is called TRANSPIRATION).

A

Evaporation cooling

19
Q

Why does small object floats above the surface of the fluid?

A

Due to the surface tension

GEN CHEM 2nd Sem (3 decks)

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