States of Matter

What are the three states of matter?

• Solid, Liquid, Gas

• Solid, Water, Air

• Metal, Liquid, Gas

• Solid, Plasma, Vapor

Answer explanation

The three states of matter are Solid, Liquid, and Gas. These states describe the distinct forms that different phases of matter take on. The other options include incorrect or specific examples rather than the fundamental states.

Which of the following is a property of solids?

• Indefinite volume

• Fixed shape

• Can be compressed easily

• Takes the shape of the container

Answer explanation

Solids have a fixed shape, meaning they maintain their form regardless of the container they are in. This distinguishes them from liquids and gases, which do not have a fixed shape and can change based on their surroundings.

Which state of matter has an indefinite volume?

• Gas

• Solid

• Liquid

• Plasma

Answer explanation

Gas has an indefinite volume because it expands to fill any container, unlike solids and liquids which have fixed volumes. Plasma, while also having no fixed shape, behaves differently under certain conditions.

Which state of matter can be compressed very easily?

• Gas

• Solid

• Liquid

• Plasma

Answer explanation

Gases can be compressed easily because their particles are far apart and have high kinetic energy, allowing them to move closer together when pressure is applied. In contrast, solids and liquids are much less compressible.

Match the following properties to the correct state of matter:

• B

• Liquid

• A

• Solid

• C

• Gas

Liquids have a fixed shape.

• True

• False

Answer explanation

Liquids do not have a fixed shape; they take the shape of their container. Therefore, the statement that liquids have a fixed shape is false.

Fill in the blank: In solids, particles are packed ______ together and cannot move.

• close

• far

• loosely

• randomly

Answer explanation

In solids, particles are packed close together, which restricts their movement. This close packing is what gives solids their definite shape and volume, unlike liquids or gases where particles are more spread out.

Which state of matter expands the most when heated?

• Gas

• Solid

• Liquid

• Plasma

Answer explanation

Gas expands the most when heated because its particles move freely and spread apart significantly, unlike solids and liquids, which have more restricted movement. Plasma also expands, but gas is the most notable in everyday conditions.

True or False: Gases have strong intermolecular forces.

• True

• False

Answer explanation

False. Gases have weak intermolecular forces, allowing their particles to move freely and occupy more space compared to liquids and solids, which have stronger intermolecular attractions.

Which state of matter has particles that are closely packed together in a regular pattern?

• Solid

• Liquid

• Gas

Answer explanation

The correct answer is 'Solid' because in solids, particles are closely packed together in a regular pattern, giving them a definite shape and volume, unlike liquids and gases where particles are more spread out.