Visitor activity

tyt

Public contributions from visitors who posted under the name tyt.

Questions 20
Answers 0

Recent questions

Latest questions from tyt

A team wants to understand the effects of molecular weight on boiling point. The team has access to five substances with different molecular weights and the time to measure 50 boiling points. How can the team make the be...
1 answer
The boiling point of a substance is tested. After 10 tests, the result is given as 37 +/−3 °C. Which conclusion can be drawn from this result? (1 point) Responses The actual boiling point is either 34°C or 40°C. The actu...
1 answer
A team of scientists is conducting tests to measure the boiling point of a liquid using a thermometer in the liquid. The team is then recording the temperature where the liquid changes from a liquid to a gas rapidly. Aft...
1 answer
The boiling point of a liquid is tested at 10 different pressures, from 0.5 to 1.4 atmospheres. The results of the tests show that there is a nearly constant increase in boiling point for each increase in pressure. Which...
1 answer
A team of scientists is working to find the boiling point of a liquid at very low pressure. After three trials, the team has an average of 12.3°C. An additional trial gives a result of 13.1°C. Which statement is a reason...
1 answer
Which best describes how the results of experiments investigating the relationship between microscopic and macroscopic phenomena affect a model of molecular theory?(1 point) Responses Consistent results indicate the need...
1 answer
Which statement best describes the development of theories that connected microscopic and macroscopic phenomena?(1 point) Responses It took several hundred years for scientists to develop current theories, and they are e...
1 answer
Which best describes the melting point difference between salt and sugar?(1 point) Responses The ionic bonds in salt result in a lower melting point than the covalent bonds in sugar. The ionic bonds in salt result in a l...
1 answer
Which correctly orders the strength of the forces between particles of differents physical states?(1 point) Responses gases>liquids>solids gases>liquids>solids liquids>solids>gases liquids>solids>gases solids>liquids>gas...
1 answer
Which statement best describes the usefulness of a model to investigate molecules at the microscopic level?(1 point) Responses A model’s usefulness depends on the accuracy of its predictions. A model’s usefulness depends...
1 answer
Which action happens at the macroscopic scale as a substance boils?(1 point) Responses A liquid becomes a solid. A liquid becomes a solid. A gas becomes a solid. A gas becomes a solid. A liquid becomes a gas. A liquid be...
1 answer
Which action would you use to determine the melting point of a substance?(1 point) Responses decreasing its temperature until it transitions from a gas to a liquid decreasing its temperature until it transitions from a g...
1 answer
Which information does the boiling point give about a substance?(1 point) Responses the phase of the substance the phase of the substance the temperature of the substance the temperature of the substance the kinetic ener...
1 answer
Why do liquids flow?(1 point) Responses The particles of a liquid are not tied to one another. The particles of a liquid are not tied to one another. Liquids take the shape of the bottom of their container. Liquids take...
1 answer
Thermal energy is associated with _____Blank(1 point) Responses particle motion particle motion bond strength bond strength electric charge electric charge substance volume
1 answer
The boiling point of benzene is 80ºC. Which pair of samples will have the same average kinetic energy as benzene molecules?(1 point) Responses a sample of liquid benzene at 80ºC and a sample of gaseous benzene at 80ºC a...
1 answer
Which statement explains why a rubber band analogy is not a perfect comparison for bonds in a substance when considering phase changes?(1 point) Responses For a phase change from solid to liquid, the bonds break complete...
1 answer
Which statement correctly describes how attractions that hold particles break?(1 point) Responses Attractions occur due to gravitational forces. When particles move fast enough, these forces can no longer keep particles...
1 answer
Which statement describes the effect of adding more energy to a system, assuming a phase change does not occur?(1 point) Responses The particles within the system will have greater motion, and the temperature will decrea...
1 answer
The internal energy within a system associated with the motion of particles and that can be added to a substance is called_____.Blank(1 point) Responses electrostatic forces electrostatic forces thermal energy thermal en...
1 answer

Recent answers

Latest answers from tyt

No public answers found for this visitor name.