Particle Model of Matter
What does "M" stand for in SPAM?
Motion or movement
Honey, crude oil and carbon dioxide is an example of what?
What are fluids?
What is the definition of flow rate?
How quickly a fluid flows or the volume of fluid that flows past a certain point in a certain time.
What is viscosity?
Resistance to flow in a fluid or thickness or thinness of a fluid
What is mass?
How much matter an object contains (grams)
Why do gases and liquids flow and solids do not?
Gases and liquids have spaces or sliding around over each other versus solids are wiggling in place and tightly packed.
The term fluids only applies to which two states?
Liquids and gases
What is the formula of flow rate?
Flow rate = amount (mL) divide time (sec)
Give an example of something that has high viscosity
ketchup and honey
What is volume?
How much space an object takes up? (mL or cm^3)
What are the traits of a liquid?
Has a definite volume but not fixed shape
What does it mean to flow?
Flow is a way of describing how fluids move
What is the flow rate for a liquid with the volume of 280mL and a time of 8 seconds.
280 mL divide 8 seconds = 96 mL per second
Fluids with very high viscosity flow very ___________
What is the formula for density?
Density = mass divide volume (g/mL)
What happens to density when the concentration of the liquid is increased? (add salt to the water)
More particles in a given volume which increases the density of the water.
Gas
What happens to flow rate of a liquid when temperature is increased?
Flow rate increases
What happens to viscosity and density when a fluid is heated?
Viscosity goes down (thinner) and density goes down (less dense)
What is the density for which a 6.4 mL sample has a mass of 13.203 g?
d=13.203 g/ 6.4 mL = 2.06 g/mL
What happens to density when temperature increases?
The particles moves more quickly and further apart and thus increasing the volume and therefore the density decreases.
What happens to flow rate as gases gets hotter?
particles move faster --> increase friction as they collide more together --> increase viscosity --> decrease flow rate
What happens to flow rate of a liquid when temperature decreases?
Flow rate decreases
What happens to viscosity when temperature is decreased?
Increase viscosity
What is the units for density for a fluid?
g/mL