kinetic energy
IS NOT a bulk property
strength of electrical forces
IS NOT a bulk property
1) Which list includes only bulk properties of matter?(1 point)
kinetic energy, strength of electrical forces, vapor pressure
boiling point, surface tension, vapor pressure
boiling point, strength of electrical forces, vapor pressure
boiling point, kinetic energy, surface tension
2)Substance Boiling Point (ºC)
acetone 56
turpentine 160
propane –43
glycerin 290
In which substance are the electrostatic forces between molecules the strongest? (1 point)
propane
acetone
glycerin
turpentine
3)Which phrase best describes the vapor point of a substance?(1 point)
the amount of heat energy required to change a substance from a liquid to a gas
the strength of the bonds between molecules of a substance that is in a gaseous state
the average kinetic energy of the molecules of a substance in its gaseous state
the temperature at which additional heat energy causes the substance to change from a liquid to a gas
4)Which procedure would produce the best data for comparing the electrostatic forces between the molecules of different substances?(1 point)
Heat each substance in solid form for the same amount of time. Measure the temperature of each substance.
Heat each substance in liquid form for the same amount of time. Measure the temperature of each substance.
Heat each substance in solid form to its melting point. Measure the quantity of each substance that has melted.
Heat each substance in liquid form to its boiling point. Measure the temperature of each substance.
5)A student wants to conduct an investigation on vapor pressure. Which statement describes how vapor pressure is related to an observable phase change?(1 point)
A liquid boils when the vapor pressure equals the atmospheric pressure.
A liquid boils when the vapor pressure equals the boiling point.
A liquid freezes when the vapor pressure equals the melting point.
A liquid freezes when the vapor pressure equals the atmospheric pressure.
8 answers
Hey, these are common sense. Show your guesses.
1) Which list includes only bulk properties of matter?
Answer: Boiling point, surface tension, vapor pressure
2) In which substance are the electrostatic forces between molecules the strongest?
Answer: Glycerin
3) Which phrase best describes the vapor point of a substance?
the amount of heat energy required to change a substance from a liquid to a gas
Answer: The temperature at which additional heat energy causes the substance to change from a liquid to a gas
4) Which procedure would produce the best data for comparing the electrostatic forces between the molecules of different substances?
Answer: Heat each substance in liquid form to its boiling point. Measure the temperature of each substance.
I didn't have that question for number 5. My 5th question was:
Water melts at 0°C. A student observes a liquid that melts at 10ºC. Which conclusion can the student reasonably draw?
Answer: The electrostatic forces between molecules in the unknown liquid are stronger than the electrostatic forces between water molecules.
Answer: Boiling point, surface tension, vapor pressure
2) In which substance are the electrostatic forces between molecules the strongest?
Answer: Glycerin
3) Which phrase best describes the vapor point of a substance?
the amount of heat energy required to change a substance from a liquid to a gas
Answer: The temperature at which additional heat energy causes the substance to change from a liquid to a gas
4) Which procedure would produce the best data for comparing the electrostatic forces between the molecules of different substances?
Answer: Heat each substance in liquid form to its boiling point. Measure the temperature of each substance.
I didn't have that question for number 5. My 5th question was:
Water melts at 0°C. A student observes a liquid that melts at 10ºC. Which conclusion can the student reasonably draw?
Answer: The electrostatic forces between molecules in the unknown liquid are stronger than the electrostatic forces between water molecules.
^^^ that fool is 100% correct ma doods
Does NO ONE have the unit test answers for Lighthouse connections academy 12th grade? (unit 8) Ik that one teacher is probably doin something with test answers because I can never find them PLEASE SOMEONE POST THEM.
100/100 correct
1. boiling point, surface tension, vapor pressure
2. glycerin
3.The electrostatic forces between molecules in the unknown liquid are stronger than the electrostatic forces between water molecules.
4.the temperature at which additional heat energy causes the substance to change from a liquid to a gas.
5. Heat each substance in liquid form to its boiling point. Measure the temperature of each substance.
1. boiling point, surface tension, vapor pressure
2. glycerin
3.The electrostatic forces between molecules in the unknown liquid are stronger than the electrostatic forces between water molecules.
4.the temperature at which additional heat energy causes the substance to change from a liquid to a gas.
5. Heat each substance in liquid form to its boiling point. Measure the temperature of each substance.
don't know if you like to work ahead butttt for the next quick check here are the answers
1.Heat energy is added to the substance, weakening the electrical attraction between molecules.
2.Both the melting point and boiling point are lower.
3.The electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
4. dipole
5.Water and ethanol have different molecular structures.
1.Heat energy is added to the substance, weakening the electrical attraction between molecules.
2.Both the melting point and boiling point are lower.
3.The electropositive hydrogen atom in one molecule and an electronegative atom in another molecule experience attraction.
4. dipole
5.Water and ethanol have different molecular structures.
sorry 1. is Heat energy is added to the substance, weakening the electrical attraction between molecules.
1 answer