SCIENCE 10 - 4TH PRELIM

Question 1

Gas moves in high velocities and high kinetic energy

Answer 1

True

Question 2

State 4 general properties:

Answer 2

No definite shape or volume, diffuse easily, compressed easily, and lower densities

Question 3

What does it varies greatly?

Answer 3

Temperature and pressure

Question 4

Motion of the molecules as they constantly move in all directions

Answer 4

Kinetic

Question 5

Example of theory in kinetic energy

Answer 5

Billiard balls

Question 6

Kinetic molecular theory assumptions:

Answer 6

Very tiny molecules, no force of attraction, random and linear motion, and value is proportional to kelvins temp

Question 7

The ability of two or more gases to mix spontaneously until they form a uniform mixture

Answer 7

Diffusion

Question 8

Process by which gas molecules pass through a very small opening from a container of higher pressure to an area of lower pressure

Answer 8

Effusion

Question 9

Best known for his study on diffusion

Answer 9

Thomas Grahams

Question 10

Defined as force per unit area

Answer 10

Pressure

Question 11

The gases in the atmosphere exert

Answer 11

Atmospheric pressure

Question 12

Atmospheric pressure can be measured using

Answer 12

Barometer

Question 13

Invented barometer

Answer 13

Evangelista Torricelli

Question 14

The SI unit of pressure

Answer 14

Pascal (Pa)

Question 15

Atmosphere

Answer 15

1 atm

Question 16

Torr

Answer 16

760 torr

Question 17

Millimeters of mercury

Answer 17

760 mm Hg

Question 18

Inches of mercury

Answer 18

29.9 in Hg

Question 19

Pounds per square inch

Answer 19

14.7 psi

Question 20

Kilopascals

Answer 20

101.3 kPa

Question 21

Bars`

Answer 21

1.013 bars

Question 22

Density and molecular weight

Answer 22

Graham’s law of effusion

Question 23

Pressure and volume

Answer 23

Boyle’s Law

Question 24

Temperature and volume

Answer 24

Charle’s Law