Da Mole
Stoichiometry
States of Matter & Gas Laws
Solutions
Equilibrium, Acids & Bases
100
moles=mass of substance/molar mass
How do you calculate moles?
100
PV = nRT
What is the general gas equation used to solve stoichiometry problems?
100
Solids, liquids, gases and plasma's.
What are the states of matter?
100
Add solvent.
How can you make an unsaturated solution from a saturated solution?
100
pH scale.
What scale measures how acidic or basic a substance is?
200
2.41 x 1024 atoms of oxygen
How many atoms of oxygen are in 2 moles of O2?
200
n represents the number of moles
What does the n in the equation, "PV=nRT" represent?
200
No
If a substance changes form one phase to another, is it still the same substance?
200
The hydrogen bonding in ice makes the structure more “open” than in liquid water. The extra spaces between molecules makes solid ice less dense than liquid water, so it floats.
Why is ice less dense than water?
200
Strong
HCl ionizes completely in water. Is it a strong or weak acid?
300
1 mole of lithium
How many moles of lithium (Li) are in 1 mole of lithium hydride (LiH)?
300
155 g of NaOH
Given the following equation: Na2O + H2O ---> 2 NaOH How many grams of NaOH is produced from 1.20 x 102 grams of Na2O?
300
Fixed volume, fixed shape, they are not easily compressible and they do not flow easily.
What are the characteristics of a solid?
300
The solvent molecules have more energy to pull the solute particles apart.
Why do chemical compounds tend to dissolve more quickly in hot solvents than in cold solvents?
300
It breaks into its cations and anions
What happens to an acid or base when it ionizes?
400
Moles give us a consistent method to convert between atoms/molecules and grams and is more convenient.
What is the purpose of moles?
400
0.89 moles of NO
If 24 grams of water are produced, how many moles of nitrogen monoxide are formed?
400
The Ideal Gas Law relates the pressure, temperature, volume, and mass of a gas through the gas constant “R”.
What is the Ideal Gas Law?
400
0.097 M
What is the molarity of a solution made when you dilute 35 grams of sodium carbonate to a volume of 3,400 mL?
400
KOH (s) → K+ (aq) + OH- (aq)
Write the reaction for the ionization of potassium hydroxide.
500
251.33 grams of iron
How many grams is a sample containing 2.71 x 1024 atoms of iron?
500
False, the mass remains the same before and after the chemical reaction.
True or False? In any chemical reaction, the mass of the products is less than the mass of the reactants.
500
165 cm3
A sample of gas has a volume of 215 cm3 at 23.5 °C and 84.6 kPa. What volume will the gas occupy at STP?
500
Solution: When one thing dissolves in each other, a homogeneous mixture. Colloid: When very small particles of one thing are suspended in another in a stable fashion. Suspension: When larger particles of one thing are suspended in another and eventually settle out.
What’s the difference between a solution, a suspension, and a colloid?
500
Acid has a pH below 7 while bases have a pH above 7. Acids change from blue to red while bases turn red to blue. An acid is a proton donor while bases are proton acceptor/removers.
What is the difference between an acid and a base?
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