1136 Questions & Blanks Flashcards

1
Q

Robert Boyle wrote the book __________

A

The Skeptical Chemist

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2
Q

The smallest subdivision of a compound that can exist separately and still retain the chemical properties of that compound is called a ______

A

molecule

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3
Q

At the boiling temperature of a substance, ________________

A

liquid changes to gas

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4
Q

At the freezing temperature of a substance, _______________

A

liquid changes to a solid

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5
Q

In the process of sublimation, ____________

A

solid changes to gas

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6
Q

In the process of condensation

A

gas changes to liquid

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7
Q

In the process of evaporation

A

liquid changes to gas

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8
Q

Kinetic energy would be best conserved by a collision between two spherical objects of __________________

A

steel and glass

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9
Q

1 lead - copper - brass - elm
2 cork - iron - rubber
3 ivory - steel - glass

A

coefficients of collision

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10
Q

The four most common types of stress

A

stretching
bending
compressing
twisting

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11
Q

The ability to be pulled into a fine wire is called

A

ductility

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12
Q

The ability to be hammered or rolled into thin sheets is called

A

malleability

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13
Q

The density of many substances is often compared to ____________, which has a density of 1 gm/cm^3

A

water

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14
Q

The ration of the density of a substance to the density of water is called its ___________

A

specific gravity

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15
Q

change in length over length to calculate the strain

A

.

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16
Q

Why are most substances less dense as liquids than as solids?

A

because there are greater spaces in between the molecules

17
Q

Meteorologists use a ______ to express air pressure

18
Q

Pressure of a liquid depends only on _____ and ______

A

height

density

19
Q

The two conditions the determine the density of a gas?

A

pressure

temperature

20
Q

Standard temperature and pressure

A

0 degrees Celsius

760 mm Hg

21
Q

The absolute temperature scale is the

A

Kelvin scale

22
Q

Gay-Lussac’s law

A

the absolute temperature of a fixed mass of gas is directly proportional to the pressure, provided the volume is kept constant.

23
Q

inventor of the barometer

A

Evangelista Torricelli

24
Q

Three most abundant gases in air

A

oxygen nitrogen argon

25
Blaise Pascal proved that _______ and _______ are inversely related
air pressure | altitude
26
What happens when friction balances the force of gravity on a falling object?
acceleration reduces to zero and the body falls at constant terminal velocity
27
laminar flow and turbulent flow in liquids
smoothly around a body | many disturbances called vortices
28
How is an airplane able to fly?
air passing over the wing travels farther and the pressure over the wing is reduced, producing lift and enabling the plane to fly
29
pressure = g(m/s^2) x (cm or m) x (grams/cm^3 or kg/m^3)
.