Module 17
What type of solution is soda ?
Acid
What is viscosity?
Liquids resistance to flow
What does the law of conservation of energy state?
Energy cannot be created or destroyed
In collision theory, what two conditions must be met for a collision between particles to result in a chemical reaction?
Particles must collide with enough energy and the correct orientation
State the law of conservation of Energy.
Energy can neither be created nor destroyed, only changed or transferred.
What turns phenolphthalein pink?
Base
What is the temperature in which water freezes?
38 fahrenheit or zero celsius
What is heat ?
Thermal energy. How fast atoms move
A reaction requires 50 kJ of activation energy. A particle collision occurs with only 35 kJ of energy. Will a reaction occur? Why or why not?
No, it won’t occur because 35 kJ is less than the required 50 kJ.
What is one mole of Gas in liters?
2.224 Liters
If PH is given, how do you find [OH-]
You Must calculate H+ then do 1x10^-14/ [H+] or find pOH then do 10^-[pOH]
What 3 liquids differ in viscosity?
Oil, lava, and syrup
What is the specific heat equation?
Q=MC𝚫T Q=heat energy, M= mass C=Specific Heat, 𝚫T= the change in temperature
Two beakers have the same reaction. One has a 0.5 M acid solution, and the other has a 2.0 M acid solution. Which beaker will have the faster reaction rate and why?
The 2.0 M beaker will react faster because the higher concentration means there are more reactant particles, which also means more collisions.
What is the formula for specific heat?
MC△T or Heat = mass X specific heat X Change in temperature
What are Titrants added to to create a color change?
They are added to ANALYTES to create permanent color change.
How do dipole-dipole forces affect the boiling point of a substance?
There is a stronger attraction between molecules
How much energy is required to melt 100 grams of ice at 0c?
33,400 Joules. Q=100g * 334J/g
A reaction takes 10 minutes to complete. A catalyst is added and the reaction now takes 2 minutes. How did the catalyst affect the reaction, and what happened to the activation energy?
The catalyst increases the reaction rate by lowering the activation energy required for the reaction to occur.
Define specific heat.
The amount of energy needed to raise 1 gram of anything by One degree celsius.
What has a pH of 9.5
Alkaline Water
What is the strength of an IMF(Intermolecular force) compared to a bond?
1/10-1/1000 of the bond
What difference does endothermic and exothermic reactions have on their graphs?
Exothermic graphs release net energy having negative 𝚫H and products are lower than reactants. Endothermic absorbs energy having positive 𝚫Hand products end up higher than reactants
What happens when you add an inhibitor to a chemical reaction?
It slows down or completely stops the reaction
If oil and water are mixed together, is it heterogeneous or homogeneous?
If oil and water are mixed together, is it heterogeneous or homogeneous?