Explanation

In a gas, the particles are:

• Widely spread out, with no fixed position or arrangement
• Not in a regular pattern, with no repeating structure or order
• Separated by large empty spaces, with no close packing or cohesion

Explanation

Matter changes state from:

• Solid to liquid (melting) when it gains energy
• Liquid to gas (vaporization) when it gains energy

This is because the particles need more energy to break free from their rigid structure in solids and move more freely in liquids, and even more energy to escape into the air as gases.

Explanation

• Condensation is the process by which water vapor (gas) changes to liquid water, releasing energy in the form of heat.
• This occurs when warm air, containing water vapor, comes into contact with a cool surface.
• It causing the water vapor to condense into droplets of water.

Explanation

Explanation

• The incorrect statement is: Particles are in loose clusters.
• In solids, particles are actually closely packed and arranged in a regular pattern, with minimal space between them.
• This is what gives solids their rigidity and structure.

Explanation

• Pollution is the introduction of harmful or poisonous substances into the environment, causing damage to the air, water, and land.
• This can have harmful effects on human health, wildlife, and the ecosystem as a whole.

Explanation

• Maize (Zea mays) is a monocotyledonous plant.
• It belonging to the family Poaceae (grass family).

Explanation

• Axe, Knife, and Push pin are all examples of wedges, as they are used to split, separate, or lift things.
• Ramp is an inclined plane used to lift or move heavy objects, but it is not a wedge.

Explanation

• Weight is a force.
• The unit of measurement for force is the Newton (N).

Explanation

• Epigeal germination occurs in dicotyledonous seeds (Dicot Seed).
• Where the cotyledon emerges from the seed coat and grows above the soil surface.
• Examples of dicot seeds include beans, peas, and tomatoes.