States and Forces
This state of matter has a fixed volume but takes the shape of its container.
What is a liquid?
The phase change in which a solid becomes liquid.
What is melting?
This substance dissolves in another substance to form a solution.
What is a solute?
The number of particles in one mole.
6.02 x 1023
The concentration unit equal to moles of solute per liter of solution.
What is molarity?
Particles in this state move freely and spread out to fill their container.
What is a gas?
When a substance is heated, its particles generally move faster because their average ____ increases.
What is kinetic energy?
A mixture in which a solute is evenly distributed through a solvent.
What is a solution?
The molar mass of water (include correct units).
What is 18.0g/mol?
The molarity of .5mol of solute in 250mL of solvent.
What is 2M?
Strong attractions hold oppositely charged ions in a repeating structure of this type of compound.
What is an ionic compound?
On a heating curve, this flat section shows that energy is changing particle attractions rather than raising temperature.
What is a phase change?
This molecule has a water-attracting end and an oil-attracting end, helping oil to mix with water.
What is a surfactant?
The mass of 2.0 moles of carbon dioxide.
What is 88g?
The percent by mass of oxygen in water (round to the tenth place).
What is 88.9%?
Unlike ionic compounds, these compounds consist of atoms joined by shared electrons.
What are molecular compounds?
What just above freezing?
These substances are conductive when dissolved in water.
What are ionic solids?
The amount of molecules in 36g of water.
1.20 x 1024 molecules.
A compound is 40% Carbon, 6.7% Hydrogen and 53.3% Oxygen by mass, this is the empirical formula.
What is CH2O?
This phrase describes what happens to the electrons in metallic compound that allows them to conduct electricity well.
What is a sea of electrons?
What is responsible for the difference in density for solid water vs liquid water?
What are hydrogen bonds between water molecules?
At a fixed temperature, a solution is considered ____ , when the maximum number of solute particles are dissolved into solution.
What is a saturated?
What is 111.63grams?
The volume of a 1M solution that would be added to water to make 250mL of a .2M solution.
What is 50mL?