Compounds/Solutions
Sugar dissolves in water, in a solution, the sugar is the _________.
solute
What does LEO says GER stand for?
lose electrons oxidation
gain electrons reduction
A liquid tastes bitter when you drink it, does it contain an acid or a base?
base
What is energy?
The ability to do work
Name at least two factors that can affect a reaction rate?
temperature, concentration, surface area and catalyst
The amount of substance in a defined volume is called ______________.
concentration
Pascal is a unit of measurement for what?
Pressure
What is the most likely pH value of bleach, it is a base?
0.5, 7.0, 12.6
12.6
Heat is being removed from a substance, but its temperature does not change. What is happening to the substance?
It is undergoing a phase change
What is the second law of thermodynamics?
the total entropy (disorder) of an isolated system always increases over time or remains constant.
How does increased temperature affect the solubility of gaseous solutes?
decrease solubility
At constant temperature; pressure and volume are inversely proportional to one another. When pressure decreases, volume of gas increases. This is who's law?
Boyle's law
What is a substance called that can act as a acid or a base?
amphoteric eg water
A reaction in which heat is released, is what kind of reaction?
exothermic
If hot water in a beaker releases heat into its surroundings and it is an exothermic process and change in enthalpy is negative. Is this a spontaneous process?
yes
What is the unit for Moles per Liter
M
What is the oxidative state of H in HCL?
1+
If a covalent compound starts with an H, it is most likely an ________?
acid
what is the specific heat capacity for water?
4.184 J/g C
In the collision theory, during a reaction, the reactants collide with one another that allows rearranging of electrons. Why is this not always easy to do and makes for ineffective reactions?
electrons repel each other
Sodium chloride (metal and non-metal) is an example of what kind of compound?
Ionic compound
Is delta H, positive or negative for endothermic reactions?
delta H is positive
Convert 1 Calorie to calories
1000 calories
Define entropy?
The amount of energy in a system not available to do work
What do catalysts lower to speed up a reaction rate?
activation energy.