Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
39 Cards in this Set
- Front
- Back
|
What is conserved in the reaction N2(g)+3F2(g)->2Nf3(g) |
Mass of types of atoms |
|
|
In a chemical reaction the mass of the products... |
is = to the mass of the reactants |
|
|
how does the atmospheric pressure at altitudes below sea level compare with atmospheric pressure at sea level? |
Their pressures are higher because they have a thicker layer of air |
|
|
What best describes the motion of iron atoms in a piece of steel |
All are moving |
|
|
the average kinetic energy of water molecules is greatest in |
steam at 200 degrees Celcius |
|
|
Which of these statements is NOT true according to the kinetic theory |
Only particles of matter in the gaseous state are in constant motion |
|
|
the avg kinetic nrg of the particles of a substance is |
proportional to the temp of the substance |
|
|
the temp at which motion theoretically stops is |
OK or -273 Celcius |
|
|
what is the pressure of one standard atmosphere |
1atm |
|
|
standard conditions when working with gases are defined as |
STP, 0C or 273K |
|
|
Whatstates of matter can flow |
Liquids and gases |
|
|
what happens to the temp of a liquid as it drops |
the temp drops |
|
|
why does a liquids evaporating rate increase as the liquid is heated |
theres more nrg for the liquid particles to fly away |
|
|
if the external pressure is 505kPa what is the vapor pressure of water at the boiling point |
505kPa |
|
|
If heat is added to a boiling liquid , what happens to the temp |
nothing |
|
|
what types of forces exist between particles of a liquid |
weak attractive forces |
|
|
which of the following will evaporate the fastest |
water at 40C |
|
|
As the temperature of sample matter is increased, what happens to the avg kinetic nrg of the particles in the sample |
it increases |
|
|
a process that absorbs heat is a(n)___ Process |
endothermic |
|
|
if you were to touch the flask in which an endothermic reaction were occurring _____ |
the flask would probably feel warmer than before the reaction started |
|
|
why does the pressure inside a container of gas increase if more gas is added to the container |
more particles are hitting the walls of the container |
|
|
increasing the volume of a given amount of gas at constant temperature causes the pressure to decrease because |
as volume increases so does the surface area, so the gaseous pressure is spread out |
|
|
if the volume of a container holding a gas is reduced, what will happen to the pressure within the container |
the pressure will increase |
|
|
what happens to the temperature of a gas when it is compressed |
the temp increases |
|
|
what happens to the pressure of a gas inside a container if the temp of the gas is lowered |
pressure goes down |
|
|
if a balloon is squeezed what happens to the air pressure within the balloon |
goes up |
|
|
what does the ideal gas law allow a scientist to calculate that other laws do not |
number of moles |
|
|
which of the following gases will effuse the most rapidly |
hydrogen |
|
|
what is the term for the dissolving medim in a solution |
solvent |
|
|
when an acid reacts with a base what compunds are formed |
salt and water |
|
|
which of the following is the property of an acid |
acids are soure and have a PH lower than 7 |
|
|
what are the properties of bases |
slippery, bitter, PH higher than 7 |
|
|
in a neutral solution [H+] is ______ |
1x10^-7 |
|
|
which type of solution is one with a pH of 8 |
basic or alkaline |
|
|
what is an acid according to Arrhenius |
a substance that is a hydrogen ion donor |
|
|
In the reaction, CO 2/3- +H2O >< HCO-3+OH- which of the follwoing is an acid |
H2O |
|
|
In the reaction CO2/3-+H20><HCO-/3+OH- |
CO3^-2 |
|
|
which is an conjuagte acid |
HCO3- |
|
|
which is a conjugate base |
OH- |
