states and matter + averages
what are the states of matter?
solid, liquid, gas
what is a solute and a solvent?
solute: the material being dissolved
solvent: the material doing the dissolving
what is density?
how close the particles are that make up matter/the mass per volume of a substance
what is buoyancy?
the tendency of an object in a fluid to rise or sink due to a difference in density
what is the opposite of viscosity?
flow
true or false: the particles in a liquid are tightly packed
true
what does it mean if a substance is soluble?
it means the substance can be dissolved by a solvent
what is the formula for density?
p = m/v
(density = mass over volume)
what does it take for an object to rise in a fluid? (in terms of density and buoyant force)
- the density of the object needs to be less than the density of the fluid
- the buoyant force on the object is greater than the force of gravity
how do you decrease the viscosity of a liquid?
heat it up/increase its temperature
from the particles being tightly packed to loosely packed, what are the states of matter?
solid (tighly packed), liquid (kinda packed), gas (loosely packed)
what is solubility?
solubility is the mass of a solute that can dissolve in a certain amount of solvent at a certain temperature to form a saturated solution
how does temperature effect a substances state?
if the temperature increases (heats up), then a solid will change for a solid to a liquid to a gas
what is buoyant force?
buoyant force is the force exerted by a fluid that pushes an object upwards
what is viscosity caused by?
the friction and attraction between molecules in a liquid/gas
what are the 3 main ways to represent data?
tables, bar graphs, and line graphs
what are the 4 factors that influence solubility?
- agitation
- surface area
- temperature
- pressure
true or false: particles lose energy when they are heated
false
true
how do you decrease the viscosity in a gas?
cool it/decrease its temperature
NO.
if you want a high concentration of sugar in your coffee, what are some ways you can increase the speed and amount of sugar that can be dissolved?
im just gonna judge your answer. heres the answer i wrote: A couple ways to increase the speed and amount of sugar that can be dissolved is heating the coffee, using normal sugar instead of sugar cubes, and stirring the coffee. Heating the coffee will increase the spaces between particles, using normal sugar instead of a sugar cube will increase the surface area the sugar has to dissolve, and stirring the coffee will move particles around which opens space for more solute (sugar) particles. All of these actions will increase the speed and amount of sugar that can be dissolved into the coffee.
how does the space between particles in a substance impact the density of the substance?
the more space there is between particles, the less dense the substance will be
what does archimedes principle state?
archimedes principle states that the buoyant force on an object is equal to the weight of the fluid displaced
you have syrup from the fridge and some that is room temperature. which one would you expect to have the highest viscosity and why?
ill judge your answer