Pearson Science Year 7 Module 2.2: Solids, Liquids And Gases Quiz

The correct answer choices for this question are: "All substances are made up of tiny, hard particles that are too small to see," "The particles of substances always have energy and are moving (even if it is a very small amount)," "The particles of substances move about more and move faster as temperature is increased," and "The closer the particles are to one another, the stronger the attraction between them." These ideas are used in the particle model to explain the behavior and properties of substances. The model assumes that all substances are composed of tiny, hard particles that are too small to see, and that these particles are constantly in motion, even if the motion is very small. Additionally, the model explains that as temperature is increased, the particles move about more and faster, and that the closer the particles are to each other, the stronger the attraction between them.

When you add heat to matter, you are actually adding energy to it. Heat is a form of energy transfer, where energy is transferred from a hotter object to a cooler object. So, by adding heat to matter, you are increasing its energy content.

When the liquid is heated, its molecules gain energy and move faster. This increase in molecular motion leads to a greater movement of the liquid as a whole. Therefore, the correct answer is "heated, faster, greater, more."

Gases have particles that are spread far apart from each other and have nothing holding their particles together. This is because gases have weak intermolecular forces and high kinetic energy, allowing the particles to move freely and independently. Unlike solids and liquids, gases do not have a definite shape or volume and can easily expand and fill the space available to them.

Particles in a gas lack strong bonds with each other, which allows them to move rapidly and in straight lines until they collide with something. These particles, which can be molecules or atoms, may hit other gas particles or the walls/sides of the container they are in.

The particle model is based on the idea that all substances are made up of tiny particles that are too small to see, even with a normal microscope. These particles are always in motion and have energy, regardless of the amount. The speed and movement of the particles increase as the temperature is increased. Additionally, the closer the particles are to each other, the stronger the attraction between them.

Solids are characterized by closely packed particles that are fixed in position. These particles have energy and vibrate in place. When the temperature of a solid is increased, the particles vibrate more vigorously. Solids have a fixed shape because their particles are strongly bonded to their neighbors, and they do not flow. Solids are incompressible because their particles are packed closely together. Heating a solid causes the particles to vibrate faster, leading to an expansion as they spread further apart.

If a particle has lots of energy, it will have a high level of kinetic energy, allowing it to move about a lot. On the other hand, if the particle has very little energy, it will have a low level of kinetic energy, causing it to move about only a tiny bit.

When you heat a substance, the particles gain more energy and move faster. This is because heat increases the kinetic energy of particles, causing them to move more rapidly. On the other hand, when you cool a substance, the reverse happens. The particles lose energy and move about less, resulting in slower movement.

Liquids have particles that are still packed closely together, but they are more loosely bonded to their neighbors. This loose bonding allows the particles to move about and over each other, which is why liquids flow and take up the shape of the container. As a liquid is heated, the movement of its particles increases, causing them to spread further apart and making the liquid expand. Liquids are incompressible because their particles are packed closely together, meaning they cannot be easily compressed.

Increasing the temperature of a substance provides the particles with more energy. As a result, the particles vibrate and jiggle more vigorously. This increased movement is due to the higher energy levels, causing the particles to move more rapidly and chaotically.

In a liquid, the particles are still packed closely together but they are far more loosely bonded to their neighbors than the particles are in a solid. This loose bonding allows the particles to move about and over each other, allowing the liquid to flow, drip, and fill the bottom of whatever container it is in.

Gases are composed of particles that are spread far apart and have no bonds holding them together. These particles move rapidly in straight lines until they collide with something, causing pressure on the walls of the container. The particles in a gas are so spread out that they cannot be seen, making gases appear invisible. Gases are compressible because there is plenty of vacant space between the particles. Without any bonds between them, gas particles travel in all directions until they fill the container. Heating a gas causes the particles to move faster and further apart, resulting in expansion.

The particles in a solid have energy and jiggle about as shown in Figure 2.2.4. The particles don't break out of position but just vibrate on the spot.

In the particle model, all substances are thought to be made of incredibly small, hard balls called particles. Each ball has energy and moves according to how much energy it has.

The particles in solids are closely packed in fixed positions. Forces between neighboring particles form bonds that hold all the particles in the solid closely together.