6 Questions
Matter is anything that has ______ and takes up space.
mass
In a ______ state, particles are closely packed and have a fixed position.
solid
The process of changing from a liquid to a gas is called ______.
evaporation
Stars are examples of the ______ state of matter.
plasma
When a solid changes directly to a gas without going through the liquid phase, it is called ______.
sublimation
The shape of a ______ is not fixed, but its volume is fixed.
liquid
Study Notes
States of Matter
Definition
- Matter is anything that has mass and takes up space.
- It can exist in different forms, known as states of matter.
Types of States of Matter
-
Solid:
- Particles are closely packed and have a fixed position.
- Shape and volume are fixed.
- Examples: rocks, metals, ice.
-
Liquid:
- Particles are close together but can move past each other.
- Shape is not fixed, but volume is fixed.
- Examples: water, oil, juice.
-
Gas:
- Particles are widely spaced and can move freely.
- Neither shape nor volume is fixed.
- Examples: air, helium, oxygen.
-
Plasma:
- High-energy state where atoms are ionized.
- Particles are highly energetic and move freely.
- Examples: stars, lightning, neon signs.
Changes of State
- Melting: solid → liquid (increase in temperature).
- Freezing: liquid → solid (decrease in temperature).
- Evaporation: liquid → gas (increase in temperature).
- Condensation: gas → liquid (decrease in temperature).
- Sublimation: solid → gas (increase in temperature, without going through liquid phase).
- Deposition: gas → solid (decrease in temperature, without going through liquid phase).
States of Matter
Definition
- Matter has mass and occupies space.
Types of States of Matter
- Solid: closely packed particles with fixed position, fixed shape and volume, e.g. rocks, metals, ice.
- Liquid: closely packed particles that can move past each other, non-fixed shape, fixed volume, e.g. water, oil, juice.
- Gas: widely spaced particles that move freely, no fixed shape or volume, e.g. air, helium, oxygen.
- Plasma: high-energy state with ionized atoms, highly energetic particles that move freely, e.g. stars, lightning, neon signs.
Changes of State
- Melting: solid to liquid, increased temperature.
- Freezing: liquid to solid, decreased temperature.
- Evaporation: liquid to gas, increased temperature.
- Condensation: gas to liquid, decreased temperature.
- Sublimation: solid to gas, increased temperature, bypassing liquid phase.
- Deposition: gas to solid, decreased temperature, bypassing liquid phase.
Learn about the different forms of matter, including solids, liquids, and gases, and their characteristics. Understand the definition of matter and its various states.
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