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Ch.1 Matter and Measurements
McMurry - Fundamentals of General, Organic, and Biological Chemistry 8th Edition
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoMcMurry 8th EditionCh.1 Matter and MeasurementsProblema 37
Capitolo 1, Problema 37

Name and describe the three states of matter.

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Step 1: Define the three states of matter: solid, liquid, and gas. These are the physical forms in which matter can exist, depending on temperature and pressure conditions.
Step 2: Describe the solid state: In a solid, particles are closely packed together in a fixed arrangement. Solids have a definite shape and volume because the particles vibrate in place but do not move freely.
Step 3: Describe the liquid state: In a liquid, particles are still close together but not in a fixed arrangement. Liquids have a definite volume but take the shape of their container because the particles can move past one another.
Step 4: Describe the gas state: In a gas, particles are far apart and move freely. Gases have neither a definite shape nor a definite volume, as they expand to fill the container they are in.
Step 5: Summarize the differences: The key differences between the states of matter are the arrangement and movement of particles, which determine their shape and volume properties.

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Solid

A solid is a state of matter characterized by a fixed shape and volume. The particles in a solid are closely packed together and vibrate in place, which gives solids their rigidity. Examples include ice, wood, and metals. Solids do not flow and maintain their shape unless subjected to sufficient force.
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Liquid

A liquid is a state of matter that has a definite volume but takes the shape of its container. The particles in a liquid are less tightly packed than in a solid, allowing them to move freely and slide past one another. This property enables liquids to flow and adapt to the shape of their surroundings. Common examples include water, oil, and alcohol.
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Gas

A gas is a state of matter that has neither a fixed shape nor a fixed volume. The particles in a gas are far apart and move rapidly in all directions, which allows gases to expand and fill any available space. This state of matter is highly compressible and can be observed in everyday examples like air, helium, and carbon dioxide.
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Assume that you are delivering a solution sample from a pipette. Figures (a) and (b) show the volume level before and after dispensing the sample, respectively. State the liquid level (in mL) before and after dispensing the sample, and calculate the volume of the sample.

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a. Gasoline

b. Iodine

c. Water

d. Air

e. Blood

f. Sodium bicarbonate

g. Gaseous ammonia

h. Silicon

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What is the difference between a physical change and a chemical change?

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