Unit 1 Matter Chemical Trends & Chemical Bonding
True or False?
Atomic Radius increases from left to right
False
A + B -> AB is which type of reaction
Synthesis
How many molecules are there in 1 mol of carbon dioxide
6.02 x 1023
Which has a higher concentration, a concentrated solution or a dilute solution?
a concentrated solution
What human activity increases atmospheric CO₂ and contributes to climate change?
burning fossil fuels
Which periodic trend describes the ability of an atom to attract electrons in a chemical bond?
What is electronegativity?
What do we need to predict the outcome of single-displacement reactions in this course?
The Metal (and Alkali) Activity Series
How many atoms are there in 2 moles of H2O
3.6 x 1024
What is the amount concentration if 750 ml of solution contains 1.5 mol of solute?
2 mol/L
According to Charle's Law, when temperature increases, volume ___________
increases
What category of molecules has the highest boiling point?
ionic compounds
What do we need to predict the outcome of a double displacement reaction?
Solubility Table
What is the percent composition of all the atoms in aluminum chloride
What volume of 6 mol/L solution can be prepared using 125 g of sodium hydroxide?
520 mL
According to Boyle's Law, when Volume increases, pressure ___________
decreases
Name the 3 types of intermolecular forces from weakest to strongest
London - Dispersion
Dipole-Dipole
H-Bonding
Name the 6 types of reactions we covered in this course
Synthesis
Decomposition
Single-Displacement
Double-Displacement
Neutralization
Combustion
What is the molecular formula given the empirical formula is C2H3O3 and the molar mass is 225.15 g/mol
C6H9O9
Name one factor that increases solubility of solids in liquids.
Temperature
What is the volume of 4.5 mol of N2O at STP
100.8 or 100 L
Why do noble gases rarely form compounds?
Because they have full valence electron shells, making them chemically stable.
Provide an example of a balanced reaction with incomplete combustion listing all reactants and products
Answers may vary
Hydrogen reacts with chlorine to form gaseous hydrogen chloride, what mass of product is expected if 10 g of hydrogen mixes with 320 g of chloride
329 g HCL
A 1.00 g sample of potassium carbonate is dissolved in 100 mL of water. A titration of this sample requires 24.20 mL of nitric acid to reach the endpoint. Calculate the amount concentration of nitric acid
0.598 mol/L
Sodium metal with a mass of 20.0 g is dropped into a beaker of water to produce hydrogen gas and sodium hydroxide. What volume of hydrogen gas will be produced if the temperature is 30.0 C and the pressure if 125 kPa?
9L