# How can you change the state of matter?

How can you change the state of matter? In short, changing states of matter involves adding or taking away heat. Adding heat to substances can cause melting, which is when a solid becomes a liquid; boiling, which is when a liquid becomes a gas; or condensation, which is when gas turns into a liquid.

How can we change the state of matter Class 9?

Effect of Temperature
1. Solids change into liquid with increase in temperature. ( Solid → Liquid)
2. A liquid changes into gas by increase in temperature. ( Liquid → Gas)
3. Gas changes into liquid by decrease in temperature. ( Gas → Liquid)
4. liquid changes into solid by decrease in temperature. ( Liquid → Solid)

Can matter change its state but how? The answer is ‘Yes’. It can definitely change its shape, size, and volume. For examples, water turns into ice upon freezing, here the form of water converts from the liquid state into the solid state; the matter itself doesn’t change but it transforms its shape.

How can we change the state of matter by pressure? When we apply pressure on a gas enclosed in a cylinder, it starts compressing and converts into liquid. Thus, by applying pressure and reducing temperature a gas can be liquefied. Example – Carbon dioxide is a gas under normal conditions of temperature and pressure.

## How can you change the state of matter? – Additional Questions

### What is states of matter for Class 9?

There are three states of matter – solid, liquid and gas.
• Solid: Matters which have fixed volume and shape are called solids.
• Liquid: Matters which have fixed volume but indefinite shape are called liquids.
• Gas: Matters which have indefinite shape and volume are called gases.

### How many states of matter are there class 9?

Complete answer: There are basically three states of matter, that are- solid, liquid and gaseous.

### What happens inside the matter during the change of state Class 9?

When the physical state of matter changes, the intermolecular forces between particles also changes that results in change in intermolecular distance between particles. Like during melting of solid to liquid, intermolecular forces decreases that increase the distance between particles and bond become weak.

### What happens to the particles of matter during the change of state Class 9?

1 Answer. During a change of state, the kinetic energy of particles may increase/decrease, resulting in the increase/decrease of inter molecular attraction.

### What causes matter to change states?

Adding or removing energy from matter causes a physical change as matter moves from one state to another. For example, adding thermal energy (heat) to liquid water causes it to become steam or vapor (a gas). And removing energy from liquid water causes it to become ice (a solid).

### Why does change of state happen?

Changes of state are physical changes. They occur when matter absorbs or loses energy. Processes in which matter changes between liquid and solid states are freezing and melting. Processes in which matter changes between liquid and gaseous states are vaporization, evaporation, and condensation.

### What do you call the change in the state of matter?

A phase change is a change in the states of matter. For example, a solid may become a liquid. This phase change is called melting. When a solid changes into a gas, it is called sublimation. When a gas changes into a liquid, it is called condensation.

### How do we use change of state in everyday life?

Heat melts ice and changes it to liquid water. Metals can be changed from a solid to a liquid state also. Metals must be heated to a high temperature to melt. Melting is changing from a solid state to a liquid state.

### What are the changes of matter and examples?

Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.

### What are two ways matter can change?

Changes are classified as either physical or chemical changes. Chemists learn a lot about the nature of matter by studying the changes that matter can undergo. Chemists make a distinction between two different types of changes that they study—physical changes and chemical changes.

### What are three ways matter can change States?

Matter changes state in various ways: Melting – changing from solid to liquid. Freezing – changing from a liquid to a solid. Vapourisation – changing from liquid to gas.