Podcast
Questions and Answers
Which of the following states of matter has a fixed volume but not a fixed shape?
Which of the following states of matter has a fixed volume but not a fixed shape?
- Gas
- Liquid (correct)
- Plasma
- Solid
A physical change produces a new substance.
A physical change produces a new substance.
False (B)
What happens to the particles of a substance as the temperature increases?
What happens to the particles of a substance as the temperature increases?
The particles move faster and create more collisions.
The chemical formula for a glucose molecule is C______H______O______.
The chemical formula for a glucose molecule is C______H______O______.
Match the following states of matter with their particle arrangement:
Match the following states of matter with their particle arrangement:
Which mineral has a Mohs hardness of 6?
Which mineral has a Mohs hardness of 6?
What mineral can scratch quartz according to the Mohs scale?
What mineral can scratch quartz according to the Mohs scale?
Which of the following best describes a chemical sedimentary rock?
Which of the following best describes a chemical sedimentary rock?
What is a characteristic feature of an element?
What is a characteristic feature of an element?
What is a sign that a chemical change has occurred?
What is a sign that a chemical change has occurred?
Flashcards
Solid state particles
Solid state particles
Particles in a solid are tightly packed and vibrate in place.
Liquid state particles
Liquid state particles
Particles in a liquid are loosely packed and can flow.
Gas state particles
Gas state particles
Particles in a gas are widely spaced and move freely.
Physical change
Physical change
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Glucose molecule
Glucose molecule
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Reaction rate
Reaction rate
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Temperature's effect
Temperature's effect
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Mineral Hardness
Mineral Hardness
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Chemical sedimentary rock
Chemical sedimentary rock
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Element
Element
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Mohs Hardness Scale
Mohs Hardness Scale
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Chemical Change
Chemical Change
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Mohs Hardness 1
Mohs Hardness 1
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Mohs Hardness 10
Mohs Hardness 10
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Hardness of unknown mineral
Hardness of unknown mineral
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Study Notes
State of Matter
- Solids have a fixed shape and volume. Particles are tightly packed and vibrate in fixed positions.
- Liquids have a fixed volume but no fixed shape. Particles are close together but can move around.
- Gases have no fixed shape or volume. Particles are far apart and move freely in all directions.
Physical Changes
- A physical change involves a change in the state of matter (solid, liquid, gas), but the substance's chemical makeup remains the same.
- Examples of physical changes include melting, freezing, evaporation, condensation, sublimation and dissolving
Molecular Structure of Glucose
- Glucose contains 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms.
Reaction Rates and Temperature
- Increasing the temperature of a reaction increases the rate of reaction.
- Higher temperatures cause particles to move faster, leading to more frequent and energetic collisions between molecules. These collisions result in more successful reactions.
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