Differentiating Characteristics
Name 3 characteristics that can be used to differentiate between substances.
Melting points, boiling points, solubility, density, or electrical conductivity.
What is the Ideal Gas Law?
10 lbs to g?
4536 g
Does temperature increase, decrease, or stay the same during a phase change?
Certain substances react to the flame test by producing different color flames. The color of the flame produced can tell us about the substance.
How are Pressure and Volume related according to the Ideal Gas Law?
They are inversely related.
What is the atomic mass of SeO?
94.97 g/mol of SeO
What does it mean if a substance is volatile?
A more volatile substance is more easily transitioned from liquid to gas - or more easily vaporized.
What is the difference between physical and chemical properties?
A physical property is a characteristic that can be observed or measured without making a change to the substance. A chemical property is the ability of a substance to undergo a chemical change.
What is the equation for velocity in relation to temperature and mass?
v2 = T/m
What is the middle point of Mole Island?
At high energy and low pressure, what phase would be more favorable for a substance (according to the PE vs. number of configurations graph)?
Gas
Which cation typically produces a blue substance?
Cu2+
At what conditions does the particulate model of matter operate?
High temperatures and low pressures.
984 kJ to J?
984,000 J
Draw a typical heating curve.
*
In the solubility test, a substance is insoluble if it...
What makes the particulate model of matter good for analyzing gases?
There are no repulsions or attractions between molecules at the conditions of the particulate model of matter.
How many molecules are in 16.43 g of C2Cl4?
5.97 x 1022 molecules of C2Cl4
What is supercritical fluid?
A substance that is either/both liquid and gas in a state above critical pressure and temperature.