Solid, Liquid, and Gas Grade 3 Science Lesson

🧊 Solid 💧 Liquid 💨 Gas

A solid has its own shape and size! 🧊 Has its own definite shape 📦 Has its own volume (size) 🔬 Particles are closely packed together ✋ Does not flow and can be held Examples: rock, book, pencil, chair

A liquid has a definite amount or volume. It does not have its own shape. It takes the shape of its container. A liquid can flow from one place to another. When water is poured into a glass, it takes the shape of the glass!

• Does not have a definite shape • Does not have a definite volume • Spreads out and fills the available space • May be difficult to see • Example: Air fills up a balloon completely!

Rigidity is the ability of a solid to keep its shape and resist bending or changing shape. Examples of rigid materials: 🪨 Rock 🪵 Wooden block 🥄 Metal spoon These objects do NOT easily change shape when force is applied!

Elasticity is the ability of a material to return to its original shape after it has been stretched, bent, or pressed. 🔵 Rubber Band – stretches and snaps back 🔵 Spring – compresses and bounces back 🔵 Rubber Ball – squishes and returns to round Whe

Plasticity is the ability to be changed or molded into a new shape and keep that new shape. 🟤 Clay 🟡 Clay dough 🌿 Wet mud When you press or mold clay into a ball or a star, it stays in its new shape. It does not go back to how it looked before. Thi

Examples of brittle materials: 🖍️ Chalk – breaks when pressed too hard 🍪 Dry biscuit or cracker – cracks easily 🪟 Thin glass – shatters when dropped ⚠️ Safety Reminder: Handle breakable materials carefully. Always ask an adult for help!

🧊 SOLID – Keeps its own shape 💧 LIQUID – Flows and takes the shape of its container 💨 GAS – Spreads out and fills all available space

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Classifying Matter: Solid, Liquid, and Gas

Term	Definition
Classifying Matter	Solid, Liquid, and Gas Grade 3 Science Lesson
What Is Matter?	🧊 Solid 💧 Liquid 💨 Gas
Solid 🧊	A solid has its own shape and size! 🧊 Has its own definite shape 📦 Has its own volume (size) 🔬 Particles are closely packed together ✋ Does not flow and can be held Examples: rock, book, pencil, chair
Liquid 💧	A liquid has a definite amount or volume. It does not have its own shape. It takes the shape of its container. A liquid can flow from one place to another. When water is poured into a glass, it takes the shape of the glass!
Gas 💨	• Does not have a definite shape • Does not have a definite volume • Spreads out and fills the available space • May be difficult to see • Example: Air fills up a balloon completely!
Rigidity 🪨	Rigidity is the ability of a solid to keep its shape and resist bending or changing shape. Examples of rigid materials: 🪨 Rock 🪵 Wooden block 🥄 Metal spoon These objects do NOT easily change shape when force is applied!
Elasticity	Elasticity is the ability of a material to return to its original shape after it has been stretched, bent, or pressed. 🔵 Rubber Band – stretches and snaps back 🔵 Spring – compresses and bounces back 🔵 Rubber Ball – squishes and returns to round Whe
Plasticity	Plasticity is the ability to be changed or molded into a new shape and keep that new shape. 🟤 Clay 🟡 Clay dough 🌿 Wet mud When you press or mold clay into a ball or a star, it stays in its new shape. It does not go back to how it looked before. Thi
Brittleness	Examples of brittle materials: 🖍️ Chalk – breaks when pressed too hard 🍪 Dry biscuit or cracker – cracks easily 🪟 Thin glass – shatters when dropped ⚠️ Safety Reminder: Handle breakable materials carefully. Always ask an adult for help!
Remember!	🧊 SOLID – Keeps its own shape 💧 LIQUID – Flows and takes the shape of its container 💨 GAS – Spreads out and fills all available space

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