Matter and Measurement
Physical Properties and Chemical Changes
Molecules, Intermolecular Forces, and Solubility
Energy in Phases
Dimensional Analysis
100
Anything that has mass and volume.
What is matter?
100
The phase change that occurs as a liquid becomes a gas.
What is boiling?
100
A particle type which is dissolved and suspended in a solvent. Frequently a solid, but does not have to be.
What is a solute?
100
The average kinetic energy of molecules in a material/solution.
What is temperature?
100
You have a job at Dion's that pays $14 per hour. You work 20 hours a week. There are 52 weeks in a year. How many years would it take you to save up $15,000? (Assuming you spend no money.)
What is 1.03 years?
200
A measurement that is consistent, but not necessarily correct.
What is precision?
200
A measurement that indicates how much matter is packed into a particular volume. Determines whether things float or sink.
What is density?
200
To dissolve a polar solute you would need to apply a polar solvent. This example illustrates the _______ principle.
What is the "like dissolves like" principle?
200
As a liquid freezes, the kinetic energy of the molecules...
What is decreases?
200
The exchange rate for US dollars to Moroccan Dirham is that $1 is equal to 10.53 dirhams. You visit the Fez medina and follow your nose to a food stand selling an absolutely delicious smelling meal. The sign indicates that the meal costs 34 dirhams. How many meals can you buy if you have transferred $120? (Assuming you transferred your money.)
37 meals
300
In the classic experiment of manipulating soil types to determine impact on plant growth, the soil types might be referred to as...
What is the independent variable?
300
A change in which bonds between atoms are broken and rearranged to create a new molecule at the end.
What is a chemical change?
300
Electronegativity _____ as you head towards the top right corner of the periodic table. The presence of these atoms in a molecule makes it more likely that a molecule will be _________.
What is increases and polar?
300
A reaction (physical or chemical) where the products have more energy than the reactants.
What is an endothermic reaction?
300
How many molecules are in 6 moles of hydrogen monoxide gas?
3.6132 x 1024 molecules
400
Estimating between the smallest markings visible.
What is the correct technique for measuring with an analog tool?
400
You have a piece of an unknown material with a mass of 13.2 grams and a volume of 7.2 mL. What is the material's density?
What is 1.833 grams/mL?
400
The three intermolecular forces in order from weakest to strongest.
What are london dispersion forces, dipole-dipole interactions, and hydrogen bonding?
400
The law stating that energy can be neither created nor destroyed.
What is the law of conservation of energy?
400
How many moles are in 14 grams of carbon monoxide (CO) gas?
What is 0.4889 moles (0.5 also fine)?
500
Without using a scientific calculator, solve: (4 x 1012 x 8 x 103) / (16 x 1011)
What is 2 x 104 or 20,000?
500
The mass of a cube with a side length of 8.0 cm and a density of 13.2 grams/milliliter.
6,758.2 grams
500
A set of strong intermolecular forces that increase the specific heat capacity, boiling point, and surface tension of water.
What are hydrogen bonds between water molecules?
500
The melting point of this material is...
What is from point B to point C?
500
How many molecules are in 30 grams of sodium bicarbonate (NaHCO3)?
What is 2.15 x 1023 molecules?