Fluids Quest

Matter is defined as:

• only liquids and gases, but not solids

• everything that exists in the universe

• the amount of material a substance has

• that which takes up space and has mass

Particle theory can be used to explain the behaviour of particles that make up a substance.  Which of the following would particle theory predict?

• a cooling substance would have particles moving more quickly

• when heated, the particles of a substance would move faster and farther apart

• a heated substance would have particles getting closer together

• when heated, a substance could undergo a change of state from a gas to a liquid

The following is true of liquids:

• the particles have no attraction for each other

• the particles will take the shape of their container

• the particles are generally closer together than it would if it was in the solid state

• the particles are as energetic as possible

Food colouring is added to a warm liquid and a cool liquid.  We expect to see the colour spread evenly more quickly in the warmer liquid because...

• there is no relationship between the temperature and the speed with which the particles spread

• the faster moving particles in the warmer liquid move more quickly, spreading the coloured liquid faster

• the particles making up the food colouring are cooler, so they will move from a cooler location to a hotter location

• the warm liquid is less dense, so the food colouring particles can push the particles aside more easily

Which of the following substances would have the highest viscosity?

• a glass of warm water

• a warm milkshake

• a cold milkshake

• a glass of cold milk

Which of the following methods of measuring viscosity of various liquids would be effective

• pouring liquids on a ramp and measuring how far they travel in 10 seconds

• dropping a marble into test tubes and measuring the time it takes to sink

• pouring from a test tube into a beaker and timing how long it takes to reach 10mL

• all of the above

Which of the following statements is untrue?

• the viscosity of a liquid decreases as temperature increases

• the viscosity of gases and liquids are affected very differently when temperature decreases

• the viscosity of liquids and gases are affected in a similar way when temperature is increased

• the viscosity of a gas increases as temperature increases

Flow rate is best defined as

• the amount of viscosity a substance has

• how fast particles of a substance can move apart from each other

• the amount of thickness a substance has

• the speed with which a substance can travel

Density can be calculated using the following rule:

• density is volume divided by mass

• density is matter divided by viscosity

• density is mass divided by volume

• density is mass multiplied by volume

Which of the following common substance/material has the highest density?

• wood

• liquid water

• aluminum foil

• corn syrup