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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?
A physical change produces a new substance.
A physical change produces a new substance.
False
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______.
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Match the following states of matter with their particle arrangement:
Match the following states of matter with their particle arrangement:
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Which mineral has a Mohs hardness of 6?
Which mineral has a Mohs hardness of 6?
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What mineral can scratch quartz according to the Mohs scale?
What mineral can scratch quartz according to the Mohs scale?
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Which of the following best describes a chemical sedimentary rock?
Which of the following best describes a chemical sedimentary rock?
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What is a characteristic feature of an element?
What is a characteristic feature of an element?
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What is a sign that a chemical change has occurred?
What is a sign that a chemical change has occurred?
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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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Description
This quiz covers essential concepts in chemistry, focusing on the states of matter, physical changes, molecular structure of glucose, and the effects of temperature on reaction rates. Test your understanding of how matter behaves under different conditions and its molecular composition.
