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Chapter 4 Review

Chapter 4 Review. Properties of Fluids. Category: KMT. What does KMT stands for?. Kinetic Molecular Theory. A push or a pull is a?. Category: Fluids. Force.

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Chapter 4 Review

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  1. Chapter 4 Review Properties of Fluids

  2. Category: KMT What does KMT stands for? Kinetic Molecular Theory

  3. A push or a pull is a? Category: Fluids Force

  4. The force of attraction between particles in the substance below are not strong. Describe how the particles move around during this state. The particles move around easily and can slide past each other. Category: States of Matter

  5. The kinetic molecular theory states three things. What are they? All matter composed of particles. Particles in constant motion. There are forces of attraction among particles. Category: KMT

  6. What is considered a fluid? Why do fluids move? Gases and liquids are considered fluids. They move because a force is exerted on them. Category: Fluids

  7. Define viscosity. The resistance of a fluid to flow and movement. Category: Viscosity

  8. Category: Viscosity What are three reasons why viscosity occurs? 1. Cohesion 2. Adhesion 3. Surface Tension

  9. As you increase temperature, the viscosity of a fluid does what? Does the fluid become thinner or thicker? Category: Viscosity The viscosity decreases (Low viscosity). The fluid becomes thinner.

  10. Mass is measured in cm3. True or false. False, it’s measured in grams, g, or kilograms, kg. Category: Matter

  11. 1 mL is equal to 1? 1 cm3 Category: Matter

  12. The displacement of water is used to find what? Category: Matter Volume

  13. Category: Density Write the equation for density and include unitsD = ? m = ? V = ? D = m V D – density (g/mL or g/cm3) M – mass (grams – g) V – volume (mL or cm3)

  14. What are two ways to state the units for density? Category: Density 1. g/mL 2. g/cm3

  15. An unknown metal has a mass of 712 g and a volume of 80 cm3. Calculate the density of the metal. D = m/V D = 712 g/80 cm3 = 8.9 g/cm3 Category: Density Problems What is the unknown metal if the density of iron is 7.87, nickel is 8.9 and silver is 10.5? Will this metal sink or float in water? NICKEL. It will sink.

  16. Make a general comment comparing the densities of solids, liquids, and gases. Category: Density Solids are generally more dense than liquids, which are more dense than gases. As you move from solid  liquids  gases, there is more room between the particles; thus, the volume has increased.

  17. List three properties of fluids and explain each. Density - mass/volume Viscosity – resistance to flow Buoyancy – upward force exerted on a fluid. Category: Fluids

  18. State Archimedes’ Principle. The buoyant force on an object immersed in a fluid is equal to the weight of the fluid the object displaces. Category: Buoyancy

  19. How can you modify a dense solid substance to make it float in a less dense fluid? Category: Buoyancy Change the shape that allows for greater amount of volume.

  20. If the upward buoyant force on an immersed object is greater than the weight of the object, what will the object do? What type of buoyancy would this be considered? Category: Buoyancy It will float. Positive buoyancy

  21. State how a decrease in temperature affects each of the following:1. Volume2. Density3. Buoyancy4. Viscosity Category: Temperature Effects Volume – decrease (particles closer together) Density – increase Viscosity – increase (high viscosity) Buoyancy - increase

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