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Questions and Answers
What does the term "atom" mean in Latin?
What does the term "atom" mean in Latin?
atomos
Molecules are always moving but never attract each other.
Molecules are always moving but never attract each other.
False (B)
Solid objects have fixed shape.
Solid objects have fixed shape.
True (A)
The term "Viscosity" is used to refer to how strong the particles of a liquid are.
The term "Viscosity" is used to refer to how strong the particles of a liquid are.
Match the following terms with their definitions (some might not have a match):
Match the following terms with their definitions (some might not have a match):
Which of the following is an example of an endothermic process?
Which of the following is an example of an endothermic process?
The smallest particles of matter are called ______ .
The smallest particles of matter are called ______ .
Temperature is a measurement of the amount of heat energy in a substance.
Temperature is a measurement of the amount of heat energy in a substance.
Which of the following is an example of a phase change?
Which of the following is an example of a phase change?
What is a factor that determines the rate of phase changes?
What is a factor that determines the rate of phase changes?
How does the speed of molecules relate to temperature?
How does the speed of molecules relate to temperature?
What happens to molecules when they slow down?
What happens to molecules when they slow down?
What does the term "melting" represent in terms of phase change?
What does the term "melting" represent in terms of phase change?
What is the reverse process of melting?
What is the reverse process of melting?
Flashcards
Volume
Volume
The amount of space a substance occupies.
Mass
Mass
The amount of matter in a substance.
Leucippus
Leucippus
Greek philosopher who proposed the idea of atoms being the fundamental building blocks of matter.
Democritus
Democritus
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Atom
Atom
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Molecule
Molecule
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Intermolecular forces
Intermolecular forces
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Intramolecular forces
Intramolecular forces
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Viscosity
Viscosity
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Phase change
Phase change
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Endothermic
Endothermic
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Exothermic
Exothermic
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Sublimation
Sublimation
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Deposition
Deposition
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Evaporation
Evaporation
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Condensation
Condensation
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Freezing/Solidification
Freezing/Solidification
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Melting
Melting
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Temperature
Temperature
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Study Notes
States of Matter
- Solids have a definite shape and volume.
- Mass is a measure of the amount of matter.
- Volume is the amount of space a substance occupies.
Atomic Theory
- Atoms were first theorized by Leucippus and Democritus.
- The term "atom" comes from the Greek word "atomos" meaning "uncuttable".
- John Dalton proposed that atoms are tiny, solid spheres.
Molecular Theory
- Molecules are larger than atoms.
- Everything is made up of molecules.
- Molecules are spaced apart.
- Molecules are always moving.
- Molecules attract each other.
Viscosity
- The stronger the attractions between liquid particles, the more viscous the liquid is.
Phase Changes
- Phase changes involve a change in energy transfer.
- Endothermic – heat is absorbed to change state.
- Exothermic – heat is released to change state.
Intermolecular Forces
- Intramolecular forces hold atoms within a molecule.
- Intermolecular forces are between molecules.
Temperature and Molecular Movement
- Temperature measures the amount of heat energy.
- Faster molecules correspond to higher temperatures.
- Slower molecules correspond to lower temperatures.
Changes in state
- Solid -> liquid : Melting
- Liquid -> solid : Freezing/Solidification
- Solid -> gas : Sublimation
- Gas -> solid : Deposition
- Liquid -> gas : Evaporation
- Gas -> liquid : Condensation
Fundamental Principles
- Matter is composed of tiny particles called atoms.
- Atoms are the smallest unit of matter.
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Description
Test your knowledge on the various states of matter, atomic theory, and molecular interactions. This quiz covers fundamental concepts such as viscosity, phase changes, and intermolecular forces. Dive in to enhance your understanding of these essential scientific principles!
