| what are the 2 types of mixtures? | heterogeneous-2+ materials that are still visible/cloudy
solution/homogeneous-2+ pure substances mix to look like 1 |
| what is archimedes' principle? | any body completely or partially submerged in a fluid at rest is acted upon by an upward, or buoyant, force, the magnitude of which is equal to the weight of the fluid displaced by the body. |
| what is buoyant force? | particles pushing up on object |
| how do you classify matter | matter is either pure substance or a mixture, mixture can be homogeneous/ solution or heterogeneous |
| what affects solubility? | agitation, temperature, and surface area |
| what is compressibility? | only gas can be compressed, not solids and liquids. gases must be in a sealed container, particles need to have enough space apart to act as a gas, and there needs to ba an external force applied to it |
| what affects viscosity? | heat and clumps/thickness |
| what is buoyancy? | tendency for materials to rise or float in a fluid |
| how do you calculate pressure? | pressure=force/area p=f/a |
| what is density/average density? | density-mass per unit of volume for a substance/ crowdedness of particles d=m/v
average density-total mass of an object divided by its total volume |
| solute vs solvent | solvent- thing that does the dissolving
solute- thing that gets dissolved |
| what are the properties of the states of matter | solid-has fixed shape & volume
liquid-takes shape of container & fixed volume
gas-spreads out, not fixed |
| what are the 3 states of matter? | solid, liquid, gas |
| what is the definition of flow rate and viscosity? | viscosity-thickness of a fluid
flow rate-amount of fluid that passes a point in a certain amount of time (speed)
high viscosity=low flow rate |
| methods of seperation | mechanical, magnetism, flotation, settling, sifting, filtration, dehydration, distillation |
| what are the changes of states? | fusion, solidification, evaporation, condensation, sublimation, deposition |
| what is neutral buoyancy? | the object has the same density as water so it stays suspended in the water |
| what is pneumatics? | gases used to move objects with pressure |
| particle model of matter | all matter is made up of tiny particles, there is space between the particles, particles are always moving at heat affects their movement, all particles in a pure substance are the same, pure particles are attracted to each other |
| what are hydraulics? | liquids used to move objects with pressure |
| what are fluids? | anything that flows, gas and liquids |
| matter vs mass vs volume | mass-something made up of particles
volume-takes up space
matter-anything w/ mass and volume |
| WHMIS acronym | Workplace Hazardous Materials Information System |
| WHMIS symbols | biohazard, explosive, flammable, oxidizer, compressed gas, corrosive, poison, serious health hazard, less serious health hazard, may damage the environment |
