Meas in Chem
How many significant figures are in 0.0089?
Two Significant Figures
Made of one type of atom.
What is an en element?
Where do we find the specific heat of water?
Table B
What is happening to the motion of the particles as we go from solid to liquid to gas?
Motion increasing/ particles moving faster
How many significant figures are in 0.007300?
Four Significant Figures
Two or elements chemically combined.
What is a compound?
What is fusion?
What substance in Table H has the highest intermolecular force?
Ethanoic Acid
What is happening to the spacing of the particles as we go from gas to liquid to solid?
How many significant figures are there in 107, 851,000?
Six significant figures
What are the hints for a chemical change?
Hint: Burning or "reacts" with
Process of solid straight to a gas.
What is sublimation?
What is the normal boiling point of ethanol?
79C
What is happening to the KE and PE during a phase such as a solid? (Think line going up or going down in a heating and cooling curve respectively.)
Heating Curve - KE increasing/PE constant
Cooling Curve - KE decreasing/PE constant
How do we find the volume of a regularly shaped object?
V= l x w x h
Process used to separate mixtures by difference in boiling points.
What is distillation?
Drawing for solid, liquid, gas.
Drawing
What is happening to the KE and PE during a phase change such as evaporation? (Think line is straight in a heating /cooling curve.)
Heating Curve: KE constant / PE increasing
Cooling Curve: KE constant / PE decreasing
How do we find the volume of an irregular object (like a rock)?
Water displacement method
Draw a mixture of compounds.
Drawing
What is happening to the heat as we go from a gas to a liquid to a solid?
It is being released - exothermic reaction.
How do I determine which heat equation to use when solving a heat problem?
Must determine whether temperature is changing or constant. If constant then what phase change is the substance undergoing.
How do we determine whether is a higher Heat of fusion or Heat of vaporization?
It is based on what takes longer - does it take longer to melt or evaporate. (Doesn't have anything to do with the temperature.)