Gases

Gases

Gases are one of the primary states of matter characterized by:

• No Fixed Shape or Volume: Gases expand to fill the shape and volume of their container.
• Particle Movement: Gas particles move rapidly and freely, with high kinetic energy and low intermolecular forces.
• Compressibility: Gases can be compressed significantly because of the large spaces between particles.
• Examples: Oxygen (O₂), nitrogen (N₂), carbon dioxide (CO₂).

Aerosols – Inhalers

Aerosols are suspensions of fine solid particles or liquid droplets in a gas. Inhalers are medical devices that deliver medication directly to the lungs in aerosol form.

Types of Inhalers:

1. Metered Dose Inhalers (MDIs):

   • Pressurized canisters that release a specific amount of medication as an aerosol.
   • Often used with a spacer to improve delivery to the lungs.

2. Dry Powder Inhalers (DPIs):

   • Deliver medication in powder form without a propellant.
   • Require the user to inhale quickly to disperse the powder into the lungs.

Applications:

1. Asthma: Medications like bronchodilators and corticosteroids to reduce inflammation and open airways.
2. Chronic Obstructive Pulmonary Disease (COPD): Similar medications to manage symptoms and improve breathing.

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