Questions and Answers
What phase do the molecules move freely?
Gas
What phase do the molecules take the shape of their container?
Liquid
What phase are the molecules held in a definite shape?
Solid
What temperature does water freeze at? (°C)
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What temperature does ice melt at? (°C)
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What temperature does water boil at? (°C)
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What is altitude?
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What is boiling?
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What is the boiling point?
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What is freezing?
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What is the freezing point?
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What phase in which matter has no definite shape or volume, moves freely?
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What phase in which matter has definite volume but no definite shape?
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What is melting?
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What is the melting point?
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What is a phase?
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What phase in which matter has a definite shape and definite volume?
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What is inside bubbles?
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What are bubbles?
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Why does phase change occur?
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What are the 4 states of matter?
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What is matter made up of?
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List 3 ways of showing how gas is matter.
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What atom moves fast?
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What atom moves medium?
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What atom moves slow?
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How can we identify matter by its characteristics?
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What has no definite shape?
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How is temperature related to phase changes?
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Why do phase changes occur?
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How does altitude affect phase changes?
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How are pressure and temperature related?
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What is condensation?
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Study Notes
States of Matter
- Gas: Molecules move freely, have no definite shape or volume.
- Liquid: Molecules take the shape of their container, have a definite volume but no definite shape.
- Solid: Molecules are held in a defined shape, with both definite shape and volume.
- Plasma: Found in stars, matter has no definite shape or volume.
Phase Changes
- Boiling Point: Water boils at 100°C (212°F) at sea level; boiling point decreases with altitude due to lower air pressure.
- Freezing Point: Water freezes and ice melts at 0°C (32°F) at sea level.
- Melting: Transition from solid to liquid, happens at the melting point.
- Freezing: Transition from liquid to solid, occurs at the freezing point.
- Condensation: Formation of small water droplets when warm air contacts a cold surface.
Effects of Temperature and Altitude
- Temperature: Key factor for phase changes; determines molecule movement and state.
- Altitude: Higher altitudes result in lower boiling points due to reduced pressure, making cooking in water longer.
Characteristics of Matter
- Matter is comprised of tiny particles called atoms.
- Identifying properties include temperature, hardness, color, and length.
- Atoms in gas move fast and bounce around; atoms in liquids slide past each other; atoms in solids move slowly and only vibrate.
Bubbles and Matter
- Bubbles contain invisible forms of water a gas, formed as heat energy converts water into gas bubbles during phase changes.
- Bubbles rise and pop at the water surface, releasing water into the air.
Importance of Pressure
- Pressure and temperature are interconnected; increased temperature results in faster-moving molecules and higher pressure.
Ways to Demonstrate Gas Matter
- Filling a balloon, inflating a soccer ball, or blowing up a pool toy showcases gas as matter through the incorporation of air.
Studying That Suits You
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Description
Test your knowledge on phase changes with this quizlet based on the Gizmo packet. Explore the properties of solids, liquids, and gases, and learn about temperature points related to phase transitions. Ideal for students looking to understand the states of matter.
