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*1. Which statement about the temperature of a phase changes in electrostatic forces holding the molecules is correct?

A. The temperatures of which a substance changes phases is dependent of the size of the molecules in the substance.

B. The strength of the forces between molecules in a substance depends on the number of filled electron shells.

C. The temperatures at which a substance changes phases indicate the relative strength of the forces between molecules in the substance.

D. The strength of the forces between molecules in a substance is the strongest at higher temperatures.
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*2. Which list shows the phases of matter in order from strongest collective electrostatic forces to weakest collective electrostatic forces?

A. Gas, solid, liquid

B. Gas, liquid, solid

C. Liquid, solid gas

D. Solid, liquid, gas
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*3. Which change happens when water boils?

A. The forces between water molecules become stronger, and the bonds between atoms in the water remain unchanged.

B. The forces between water molecules are unchanged, and the bonds between the atoms in a water break.

C. The force is between water molecules in the bonds between the atoms in the water molecules break.

D. The forces between water molecules break, and the bonds between the atoms in water are unchanged.
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*4. A sample of calcium carbonate is cooled. Which change happens to the molecules of calcium carbonate in the sample?

A. The forces weaken, and the molecules move around.

B. The molecules break apart and then form stronger forces.

C. The forces strengthen, and the molecule structure becomes more rigid.

D. The molecules vibrate more and weaken the forces.
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*5. The boiling point of acetone is lower than the boiling point of ethanol. Based on this information, which conclusion can be drawn about the two substances?

A. The intramolecular bonds in acetone are stronger than the intramolecular bonds in ethanol.

B. The intermolecular forces in ethanol are stronger than the intermolecular forces in acetone.

C. The intramolecular bonds in ethanol are stronger than the intramolecular bonds in acetone.

D. The intermolecular forces in acetone are stronger than the intermolecular forces in ethanol.

Respuesta :

Answer:

see below

Explanation:

1. The temperatures at which a substance changes phases indicate the relative strength of the forces between molecules in the substance.

2. solid, liquid, gas

3. The forces between water molecules break, and the bonds between the atoms in water are unchanged.

4. The forces strengthen, and the molecule structure becomes more rigid.

5. The intermolecular forces in ethanol are stronger than the intermolecular forces in acetone.

pstnonsonjoku

The the degree of intermolecular interaction between molecules determines the magnitude of boiling point of the substance.

During phase change, a substance moves from one state of matter to another. The temperature at which a phase change occurs is determined by the strength of the forces between molecules in the substance. The relative magnitude of intermolecular forces between molecules in different states of matter is solids > liquids > gases.

During boiling, energy is imparted to the molecules of a liquid. When this occurs, the forces between water molecules break, and the bonds between the atoms in water are unchanged.

We must recall that the molecules of a substance are in constant random motion. The average kinetic energy of molecules is proportional to temperature. As a sample of  calcium carbonate is cooled, the forces between molecules strengthen, and the molecule structure becomes more rigid.

The magnitude of intermolecular interaction affects the boiling point of a liquid. The stronger the magnitude of intermolecular interaction,the higher the boiling point. As such, ethanol having hydrogen bonds between its molecules has a higher boiling point than acetone which only posses weaker dipole - dipole interactions.

Learn more: https://brainly.com/question/6284546

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