Flow rate
Flow rate=
Distance/time
Oxygen is an example of a __________
Pure substance
1cm3 is equal to
1ml
what is buoyancy?
the tendency to rise or float in a fluid
out of liquid, gas, and solid, which ones particles has the most freedom (space between particles)
Gas
What are some UNITS of measurement for distance and time?
Distance: cm,km,m
Time: sec, mins, h
Is vinegar a homogeneous or heterogeneous mixture?
heterogeneous
Density =
Density = Mass/Volume
what is the buoyant force?
the force that acts AGAINST gravity
What are three characteristics of a liquid?
-no defined shape
-definite volume
-particles slides past
-particles stay close together
-particles vibrates in clusters
If you heat up syrup, does it increase or decrease the flow rate?
increase
what is the solute and solvent in a cup of tea?
solute: the tea bag
solvent: the water
if a bouncy balls density is 0.8g/cm3 and the density of the water is 1.0g/ml, would the bouncy ball float or sink?
The bouncy ball will float, since the density of the bouncy ball is lower than the density of the water, the bouncy ball will float.
When the buoyant force is greater than the gravitational force, an object will...
float
what happends to the particles of liquid as its heated or cooled?
Heated: the particles vibrate faster, farther apart
cooled: the particles vibrates slower, and closer together
When you increase the temperature of a gase, does the flow rate increase or decrease?
decrease
What is the difference between a solvent and a solute?
Solvent: the substance doing the disolving
Solute: the substance being dissolved
how do you calculate the volume for a object?
Length x Width x Height
LxWxH
What is the Archimedes principle?
the buoyant force is equal to the weight of the displaced water.
What are the points of the particles model of matter?
- all substances are made of particles
- particles are always in motion
- all particles in a substance are the same, different substances are made up of different particles
- particles have spaces between them
- the attraction between particles is either weak or strong.
If you put maple syrup at the end of a 4m long tilted table, and it takes 40 secs to reach the end, then what is the flow rate?
F.R = distance/time
F.R = 4m/40secs
= 0.1m/secs
If you add too much ice tea powder to a cup of water and it cannot all dissolve, this is...
supersaturated
A lump of gold displaces 70ml of water. what is the mass?
(density of gold = 19.32g/cm3)
19.32 = m/ 70
m = 19.32 x 70
m = 1 352.4
when the mass of an object is distributed unevenly that effects the..
buoyancy
What is it called when a gas turns into a solid, and when a gas turns into a liquid?
Gas to solid=sublimation
Gas to liquid=condensation