Question 1:

First, let's identify the states of matter in the pictures:

• X = Gas: The dots are far apart and floating everywhere.

• Y = Solid: The dots are tightly packed together in a neat pile.

• Z = Liquid: The dots are close together but not in a neat pile.

Answer: D. 'Z' shows a liquid and 'Y' shows a solid.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 2:

First, let's identify the states of matter in the pictures:

• X = Gas: The dots are far apart and floating everywhere.

• Y = Solid: The dots are tightly packed together in a neat pile.

• Z = Liquid: The dots are close together but not in a neat pile.

  
  Answer: B. X has the most energy (gas moves the fastest) and Y has the least energy (solid barely moves).

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 3:

First, let's identify the states of matter in the pictures:

• X = Gas: The dots are far apart and floating everywhere.

• Y = Solid: The dots are tightly packed together in a neat pile.

• Z = Liquid: The dots are close together but not in a neat pile.

Answer: A. Z to Y. Freezing means turning from a liquid (Z) into a solid (Y).

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 4:

The correct answer is:

C. solid

In a solid, the particles (atoms, ions, or molecules) are held in fixed positions within a rigid lattice structure. They cannot move freely from place to place, but they vibrate about their fixed positions due to thermal energy.

In contrast:

• Liquids – particles can move and slide past each other.

• Gases – particles move freely and rapidly in all directions.

• Solutions – particles are dispersed and move freely in the solvent.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 5:

The correct answer is:

B. water

Here's why:

• Water is a liquid. In a liquid, the particles are close together (tightly packed, but not in fixed positions) and can slowly move past each other, allowing the liquid to flow.

Brief check on the others:

• Steam – gas; particles are far apart and move very rapidly.

• Ice – solid; particles are close together but vibrate in fixed positions (they do not move past each other).

• Oxygen – at room temperature, it's a gas; particles are far apart and move freely.

So the substance where particles are close together and moving past each other is water.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 6:

The correct answer is:

C. further apart and moving faster.

Here's why:

• Molten wax is a liquid (melted solid).

• Compared to solid wax, the particles in molten wax have more energy, so they move faster.

• They are also further apart because the rigid structure of the solid has broken down, allowing particles to slide past one another.

So in molten wax:

• Further apart (than in the solid)

• Moving faster (due to higher thermal energy)

Thus, C is correct.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 7:

Molten iron → Solid iron
This is called freezing (or solidification).
It is the process where a liquid turns into a solid upon cooling.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 8:

This is called condensation.
It is the process where a gas (vapour) turns into a liquid upon cooling.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 9:

The interconversion when ice changes to water is called:

Melting (or fusion).

This is the process where a solid turns into a liquid upon heating.

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.

Question 10:

To determine the state of each substance at room temperature (25°C), compare 25°C to their melting and boiling points.

For Substance P:

• Melting point = –35°C

• Boiling point = 86°C

At 25°C:

• 25°C is above the melting point (–35°C) → it has melted.

• 25°C is below the boiling point (86°C) → it has not boiled.

So Substance P is a liquid at 25°C.

For Substance Q:

• Melting point = 54°C

• Boiling point = 205°C

At 25°C:

• 25°C is below the melting point (54°C) → it has not melted.

So Substance Q is a solid at 25°C.

Matching the table:

• P = liquid

• Q = solid

So the correct answer is:

C. liquid / solid

*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.