# What Does The Particle Model Explain?

What does the particle model explain? The particle model is a scientific theory that explains the properties of solids, liquids and gases by suggesting that all matter is made of particles, and that those particles behave differently in solids, liquids and gases.

Considering this, What happens to the particles in thermal expansion?

All three states of matter (solid, liquid and gas) expand when heated. The atoms themselves do not expand, but the volume they take up does. Heat causes the molecules to move faster, (heat energy is converted to kinetic energy ) which means that the volume of a gas increases more than the volume of a solid or liquid.

In addition to, What makes a material expand or contract? The expansion (or contraction) of any material is due to the kinetic energy of its atoms. When a material is heated, the increase in energy causes the atoms and molecules to move more and to take up more space— that is, to expand.

In conjunction with, How does the particle model of matter help us understand the process of diffusion?

Scientists find the particle model useful for two reasons. First, it provides a reasonable explanation for the behaviour of matter. Second, it presents a very important idea—the particles of matter are always moving. Thus, the particle model can be used to explain the properties of solids, liquids, and gases.

What are the main ideas in the particle model?

The particle model has four main tenets: All substances are made of particles. The particles are attracted to each other (some strongly, others weakly). The particles move around (have kinetic energy).

## Related Question for What Does The Particle Model Explain?

What are the 4 rules of the particle model?

3.2 state the postulates of the particle theory of matter (all matter is made up of particles; all particles are in constant motion; all particles of one substance are identical; temperature affects the speed at which particles move; in a gas, there are spaces between the particles; in liquids and solids, the particles

How does expansion and contraction work?

Substances expand (increase in size) when they get warmer, and they contract (decrease in size) when they get cooler. This property can be useful. For example: Thermometers work because the liquid inside them expands and rises up the tube when it gets hotter.

What is thermal expansion and contraction?

Thermal Expansion and Contraction. THERMAL EXPANSION AND CONTRACTION. Materials expand or contract when subjected to changes in temperature. Most materials expand when they are heated, and contract when they are cooled. When free to deform, concrete will expand or contract due to fluctuations in temperature.

What is thermal contraction?

Thermal contraction is a decrease in a material's volume when its temperature decreases. As the temperature decreases, the average kinetic energy of the particles decreases and they slow down and get closer together thereby decreasing the volume of the material.

What is the meaning of expand and contract?

As verbs the difference between contract and expand

is that contract is to draw together or nearer; to shorten, narrow, or lessen while expand is to change (something) from a smaller form and/or size to a larger one.

What do you mean by expansion?

1 : expanse. 2 : the act or process of expanding territorial expansion economic expansion expansion of the universe. 3 : the quality or state of being expanded. 4 : the increase in volume of working fluid (such as steam) in an engine cylinder after cutoff or in an internal combustion engine after explosion.

What are the effects of expansion and contraction in our daily lives?

Expansion and Contraction of Liquids

Thermal expansion and contraction affect the volumes of liquids that are used every day. Cars provide a good example of this. Cold gasoline in a car's gas tank expands in hot weather. If the tank is filled to the brim, the gas may overflow.

How does the particle model of matter help explain the rate of reactions?

Answer: The main ideas of the particle model are: All matter is made up of very small particles. The particle movement speeds up as temperature increases and slows down as it decreases. Sometimes, the amount of energy involved in a reaction may be so small that the change in energy is not readily noticeable.

How does the particle model explain the properties of matter?

The kinetic theory of matter (particle theory) says that all matter consists of many, very small particles which are constantly moving or in a continual state of motion. The degree to which the particles move is determined by the amount of energy they have and their relationship to other particles.

How does the particle model of matter explain the different masses of different substances?

Mass depends on the number of particles and the mass of each individual particle. A particular volume of solid or liquid has a greater mass than the same volume of gas because it has more particles in it.

What is a particle model motion diagram?

A particle model is a simplified version of a motion diagram in which the object in motion is replaced by a series of single points. Reason: A series of images showing the positions of a moving object at equal time intervals is called a motion diagram.

What are the 5 main ideas of the particle theory?

Terms in this set (5)

• All matter is made of particles.
• Particles have space between them.
• Particles are always moving.
• Particles move faster and get farther apart when heated.
• Particles are attracted to each other.

• What are the 4 key points addressed in the particle model of matter?

Understand the macroscopic evidence for each of the four basic principles of the particle model of matter:

• Matter is made of tiny particles.
• There is empty space between the particles.
• The particles are in constant motion.
• There are forces that act between the particles.

• How do you do particle diagrams?

What does expansion mean in physics?

expansion, in physics, increase in volume resulting from an increase in temperature. Contraction is the reverse process. When heat is applied to a body, the rate of vibration and the distances between the molecules composing it are increased and, hence, the space occupied by the body, i.e., its volume, increases.

What happens during expansion?

Expansion is the phase of the business cycle where real gross domestic product (GDP) grows for two or more consecutive quarters, moving from a trough to a peak. Expansion is typically accompanied by a rise in employment, consumer confidence, and equity markets and is also referred to as an economic recovery.

What is the contraction and expansion movement of the walls of the food pipe is called?

The correct answer is Peristalsis. Key Points. Peristalsis is a type of wave-like movement occurring in the alimentary canal which involves contraction and relaxation of the muscles. It begins in the esophagus and helps to move the food along the alimentary canal for the process of digestion.

Where does expansion and contraction occur?

Thermal expansion occurs when you heat a material and it gains more internal energy. The atoms within the material move around faster, and the material expands. Thermal contraction occurs when you cool the material down, and the atoms don't have that much energy. What happens is the material contracts.

What are example of contraction and expansion in solid liquid and gas?

Contraction in gases

If we hold a very hot glass tumbler under cold water, it cracks. This is because the outer surface of the glass comes in direct contact with cold water and contracts more as compared to the inner surface. We observed that water expanded on heating.

How does water show expansion and contraction?

Water is one of the few exceptions to this behavior. When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees Celsius is reached. After that, it expands slightly until it reaches the freezing point, and then when it freezes it expands by approximately 9%.

What are some examples of thermal expansion and contraction?

So provision is made during contraction for expansion and contraction with temperature. For example, railway tracks buckled on a hot summer day due to expansion if gaps are not left between sections. Bridges made of steel girders also expand during the day and contract during the night.

What is the effect of expansion and contraction due to heat in welding?

Welding Science cannot avoid distortion but minimizes it. When heated, steel expands; when cooled, it contracts. Due to these properties, a metal changes its relative position—this is known as its Distortion.

How does thermal expansion occur?

Thermal expansion occurs when an object expands or gets larger due to an increase in its temperature. Thermal expansion occurs because heated molecules move faster and take up more space.

What's the difference between expand and contract?

When used as verbs, contract means to draw together or nearer, whereas expand means to change (something) from a smaller form and/or size to a larger one.

What does expand mean example?

Expand is defined as to increase in size, unfold or spread out. An example of expand is someone making friends at a party. An example of expand is a pregnant woman's belly. An example of expand is someone gathering more knowledge about a topic. To make greater in size, bulk, scope, etc.; enlarge; dilate; extend.

What is the meaning of expand the following?

transitive verb. 1 : to open up : unfold. 2 : to increase the extent, number, volume, or scope of : enlarge. 3a : to express at length or in greater detail. b : to write out in full expand all abbreviations.

Expansion is the process of becoming greater in size, number, or amount.

What is expansion process?

The Joule expansion (also called free expansion) is an irreversible process in thermodynamics in which a volume of gas is kept in one side of a thermally isolated container (via a small partition), with the other side of the container being evacuated.

What is the meaning of contraction in science?

Contraction. (Science: physiology) a shortening or reduction in size, in connection with muscles contraction implies shortening and/or development of tension.

What are contractions examples?

What are contractions? A contraction is a word made by shortening and combining two words. Words like can't (can + not), don't (do + not), and I've (I + have) are all contractions.

Where does expansion occur in everyday life?

The behavior of gasoline pumped on a hot day provides an example of liquid thermal expansion in response to an increase in temperature. When it comes from its underground tank at the gas station, the gasoline is relatively cool, but it will warm when sitting in the tank of an already warm car.