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Science 8 - Unit A: Mix and Flow of Matter

Terms in this set (18)

The sudden change in pressure cause nitrogen gas to bubble out of the blood tissue. These bubbles can collect on other parts of the body and causes pain.
What is depression sickness?
The water experts in all directions. The greater therapy has,the greater the pressure at the point.
Pressure on walls of a container?
When an object is in a liquid, the force of gravity pulls it down buoyancy force pushes an object upward. Buoyancy is opposite of gravity.
What is buoyancy?
Measured in ml or cm3. Calculated by diving the mass and the volume. D=M/V
How is density calculated?
Detergent - the detergent surrounds the dirt particles so they can't reattach to the clothes.
Phosphates - are chemicals that are no longer used because they damage the environment.
How does detergent and phosphates work?
Unsaturated means more solute can be displayed at the given temperature. Sate rates means no solute can be dissolved at the given temperature.
The solubility can by affected by the
- temperature
- amount of solute
- amount of solvent
-motion (mixed)
What is saturation and solubility?
All matter is made up of ting particles
Particles are always moving
Particles are attracted to each other
Particles have spaces between them
Heat makes particles move faster
What is the particle model of matter?
Fresh water is less dense than saltwater. Warm water is less dense than cold water. The plimsoll line shows how heavily a ship can be loaded safely loaded in different water conditions.
Why do ships have a plimsoll line?
Ferdinand vin Zeppelin invented airships. The helium is less dense than the air causing it to float in the air.
Airships - Zeppelins
Viscosity is how quickly a fluid flows. The viscosity of a substance is determined by the fluids internal resistance or friction that keeps it from flowing. Fluids with high viscosity flow slower.
What is viscosity?
Substance in the chromatography paper is called chromatography. The distance each colour or substance moves up the paper depends on its attraction to the paper. The ones with weak attraction move the farthest.
What is chromatography?
As the temperature of a liquid decreased the viscosity increases.
As the temperature of a liquid increase the viscosity decreased.
When energy or heat is add to the logos the particles slide and roll more quickly.
The fluid flows more readily, it's viscosity decreases.
Warmer water floats on cold water because the density is lower.
When water gets warm the volume increases because there is a larger a sound of spaces between the particles,but the number of particles does not change, keeping the mass the same. This causes the density to decrease.
How is density and viscosity affected by temperature?
Workplace Hazardous Material Information System. The symbols are always circles.
What does WHMIS stand for? What shape are the symbols?
You can see the substance that make up the mixture. Soil and mixed vegetables are an example. Mechanical mixture is another name for it
What is heterogenous? What is an example?
You can't see the different sun stances that make them up. It looks like it is all one substance. Juice is an example. These solutions maybe solutions, suspensions, or colloids.
What is a homogenous mixture and what are some examples?
Matter
Mixtures. Pure Substance
(More 1 substance). (All 1 substance)
Mechanical Mixture
Solution
Suspensions
Colloids
What is the matter chart?
Is a cloudy mixture with more than one substance in it. If insisted bed its particles will separate otherwise they will stay attached. Muddy water or Yamato juice is an example.
What is suspension and what is an example?
Cloudy mixture bit paroles to not separate as easy. Milk is and example
What is a colloid and what is an exampl
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