1136 Questions & Blanks

Question 1

Robert Boyle wrote the book __________

Answer 1

The Skeptical Chemist

Question 2

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

Answer 2

molecule

Question 3

At the boiling temperature of a substance, ________________

Answer 3

liquid changes to gas

Question 4

At the freezing temperature of a substance, _______________

Answer 4

liquid changes to a solid

Question 5

In the process of sublimation, ____________

Answer 5

solid changes to gas

Question 6

In the process of condensation

Answer 6

gas changes to liquid

Question 7

In the process of evaporation

Answer 7

liquid changes to gas

Question 8

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

Answer 8

steel and glass

Question 9

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

Answer 9

coefficients of collision

Question 10

The four most common types of stress

Answer 10

stretching
bending
compressing
twisting

Question 11

The ability to be pulled into a fine wire is called

Answer 11

ductility

Question 12

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

Answer 12

malleability

Question 13

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

Answer 13

water

Question 14

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

Answer 14

specific gravity

Question 15

change in length over length to calculate the strain

Answer 15

.

Question 16

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

Answer 16

because there are greater spaces in between the molecules

Question 17

Meteorologists use a ______ to express air pressure

Answer 17

millibar

Question 18

Pressure of a liquid depends only on _____ and ______

Answer 18

height

density

Question 19

The two conditions the determine the density of a gas?

Answer 19

pressure

temperature

Question 20

Standard temperature and pressure

Answer 20

0 degrees Celsius

760 mm Hg

Question 21

The absolute temperature scale is the

Answer 21

Kelvin scale

Question 22

Gay-Lussac’s law

Answer 22

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

Question 23

inventor of the barometer

Answer 23

Evangelista Torricelli

Question 24

Three most abundant gases in air

Answer 24

oxygen nitrogen argon

Question 25

Blaise Pascal proved that _______ and _______ are inversely related

Answer 25

air pressure

altitude

Question 26

What happens when friction balances the force of gravity on a falling object?

Answer 26

acceleration reduces to zero and the body falls at constant terminal velocity

Question 27

laminar flow and turbulent flow in liquids

Answer 27

smoothly around a body

many disturbances called vortices

Question 28

How is an airplane able to fly?

Answer 28

air passing over the wing travels farther and the pressure over the wing is reduced, producing lift and enabling the plane to fly

Question 29

pressure = g(m/s^2) x (cm or m) x (grams/cm^3 or kg/m^3)

Answer 29

.