States of Matter

Question 1

What is a gaseous mixture of electrons and positive ions?

Answer 1

plasma

Question 2

What is the temperature at which a solid turns to a liquid?

Answer 2

melting point

Question 3

What device is used to measure atmospheric pressure?

Answer 3

barometer

Question 4

What is the pressure resulting from the collision of air molecules with objects?

Answer 4

atmospheric pressure

Question 5

What is the temperature at which the vapor pressure of a liquid is equal to the external pressure?

Answer 5

boiling point

Question 6

What is the smallest group of particles within a crystal that retains the SHAPE of a crystal?

Answer 6

unit cell

Question 7

What is a solid in which the atoms, ions or molecules are arranged in an orderly repeating, three dimensional repeating pattern?

Answer 7

crystal

Question 8

What is the pressure above a liquid in a sealed container, caused by the collision of vaporized particles with the walls of the container?

Answer 8

vapor pressure

Question 9

What is a form of a solid lacking an orderly internal structure?

Answer 9

amorphous

Question 10

What is the boiling point of a liquid at a pressure of 101.3 kPa?

Answer 10

normal boiling point

Question 11

What is the SI unit for pressure?

Answer 11

pascal

Question 12

What is one of two or more different forms of the same element in the same physical state?

Answer 12

allotrope

Question 13

What is the conversion of a liquid to a gas below its boiling point?

Answer 13

evaporation

Question 14

What states that the tiny particles in all forms of matter are in constant motion?

Answer 14

Kinetic theory

Question 15

What is the change of a substance from a solid to a gas without passing through the liquid state?

Answer 15

sublimation

Question 16

Compared to gases - what do liquids do?

Answer 16

Liquids consist of particles that are more strongly attracted to each other than those of gases

Question 17

What does STP refer to?

Answer 17

0* C and 1 atm

Question 18

What is atmospheric pressure equal to at sea level?

Answer 18

101.3 kPa
1 standard atomosphere
760 mm Hg

Question 19

At 80 K what do the particles of a gas have?

Answer 19

Twice the average kinetic energy of the same particles at 40 K

Question 20

What is true about atmospheric pressure?

Answer 20

At sea level it measures 101.3 kPa
It is measured with a barometer
It varies slightly depending on the weather

Question 21

What happens to the atmospheric pressure as you climb a mountain?

Answer 21

It will decrease

Question 22

What do gases consist of according to the kinetic theory?

Answer 22

particles that move rapidly in constant random motion

Question 23

What is another word for evaporation?

Answer 23

vaporization

Question 24

What is absolute zero?

Answer 24

0 Kelvin
A temperature that has never been reached in the laboratory
The temperature at which the motion of particles theoretically ceases

Question 25

What is the pressure of a gas in a container is 76 mm Hg equal to?

Answer 25

0.1 atm

Question 26

How can water be made to boil at 92*?

Answer 26

Lowering the external air pressure

Question 27

What is the conditions at which the solid, liquid, and gaseous phases of a substance can exist in equilibrium with one another referred to?

Answer 27

triple point

Question 28

What is the temperature at which the motion of all particles theoretically ceases?

Answer 28

0 K

Question 29

Can equilibrium be reached in an open container or closed container?

Answer 29

Draw a picture