Chapter 4 Review Properties of Fluids

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

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

Category: States of Matter 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.

The kinetic molecular theory states three things. What are they? Category: KMT 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.

State the missing processes for changes in state found below. Category: Changes of State State the missing processes for changes in state found below. Solid to gas  sublimation Liquid to gas  evaporation Solid to liquid  melting Liquid to solid  solidification

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

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

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

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

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

Category: Matter What is the measurement of the force of gravity pulling on an object called? Weight

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

Category: Matter The curved liquid surface that you read when looking at a graduated cylinder is called the what? Meniscus

Category: Matter Calculate the volume of a rectangular solid with a length of 5 cm, a width of 6 cm, and a height of 3 cm. 5 cm x 6 cm x 3 cm = 90 cm3

23 g – 5 g = 18 g Category: Matter Calculate the mass of a beaker when the mass of a liquid is 5 g and the mass of the beaker + liquid is 23 g. The beaker’s mass is: 23 g – 5 g = 18 g

Write an equation for density, mass, and volume. D = ? m = ? V = ? Category: Density Write an equation for density, mass, and volume. D = ? m = ? V = ? D = mass/volume m = volume x density V = mass/density

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

Category: Density Problems A block of fir wood measures 10 cm by 8 cm by 3 cm. It has a mass of 144 g. Calculate the density of the wood. V = l x w x h V = 10 x 8 x 3 = 240 cm3 D = m/V D = 144 g/240 cm3 = 0.60 g/cm3

Category: Density Problems An unknown liquid has a mass of 150 g. Its density is known to be 0.95 g/cm3. Calculate the volume of the liquid. V = m/D V = 150 g/0.95 g/cm3 = 157.9 cm3

Category: Density Problems An unknown liquid has a volume of 1250 cm3. Its density is 1.25 g/cm3. Calculate the mass of the liquid. m = D x V m = 1.25 g/cm3 x 1250 cm3 m = 1562.5 g

Category: Density Make a general comment comparing the densities of solids, liquids, and gases. 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.

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

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

Category: Buoyancy If the upward buoyant force on an immersed object is greater than the weight of the object, what will the object do? It will float.

Category: Temperature Effects State how a decrease in temperature affects each of the following: 1. Volume 2. Density 3. Buoyancy 4. Viscosity Volume – decrease (particles closer together) Density – increase Viscosity – increase (high viscosity) Buoyancy - increase