Chemistry Test Midterm

Front 1

Ideal Gas Characteristics

Back 1

1.) Gas particles has mass but negligible volume. Gases are made of small particles widely spread out. Most of the volume is empty space. This explains why they can be compressed easily.
2.) Gas particles move randomly and in straight and constant lines until they hit each other or the walls of the container.
3.) They take full volume and shape of the container
4.) Gases are not subject to any attractive or repulsive forces, except bouncing off of each other or the container
5.) Gases collide in a perfectly elastic fashion. There is no energy lost only transferred from particle to particle. The energy of the system remains constant. This explains why they do not settle.

Front 2

When are gases most ideal?

Back 2

-gases are most ideal the further apart the particles are
-this means they are most ideal when there is high temperature and low pressure

Front 3

What is sublimation?

Back 3

solid to gas

Front 4

What are the two examples of ideal gaseS?

Back 4

hydrogen and helium

Front 5

Isotopes

Back 5

same element with different number of neutrons or mass

Front 6

As the temperature increases

Back 6

the kinetic energy increases

Front 7

Calorimeter

Back 7

A calorimeter is an apparatus used to measure the heat generated by a chemical reaction

Front 8

The pressure exerted by a gas is due to

Back 8

impacts or collisions of the molecules with the surfaces of the container that hold them

Front 9

Energy

Back 9

potential energy is stored in molecules and released in the form of chemical energy

Front 10

The hydrogen bonding in water causes a

Back 10

low vapor pressure and high boiling point

Front 11

Homogenous Mixture

Back 11

are uniform intermixtures of particles called a solution
-a solution is produced when one substance dissolves or dissociates in another
-opposite of heterogenous

Front 12

As the size of the molecules increases, Van der Waal's forces

Back 12

increase

Front 13

Van der Waal's forces
-high/low pressure?
-high/low temperature

Back 13

high pressure
low temperature

Front 14

Why is water a good solvent of ionic compounds?

Back 14

because it is a dipole

Front 15

Which statement describes oxygen gas, O2 (g) and ozone gas, O3 (g)?

Back 15

different molecular structures and different properties