Solutions
The particles in this mixture are so small and mixed together that they can’t be seen separately - even under a microscope. Mostly solids mixed with liquids (but not always).
What is a solution?
This is not the solute but the ______.
What is the solvent?
__________ is the measure of how cloudy the water is. The cloudy water, caused by small solid particles, blocks sunlight and harms aquatic life.
What is Water Turbidity?
Name all the types of separation techniques.
What are Sifting, Magneting, Filtration and Evaporation?
_________is anything that takes up space and has mass, all physical objects are composed of matter, and an easily observed property of matter is its state or phase. The classical states of matter are solid, liquid and gas
What is Matter?
This is not a solution, but a ______________
What are Homogenous Mixtures?
The substance that dissolves in solvent- e.g. salt, sugar.
What is solute?
Oxygen is able to pass through the air and dissolve into the surface of the water. Also photosynthesis in aquatic plants. Most aquatic organisms need 5 to 6 ppm of oxygen for normal activity and die when levels are less than 2 ppm (parts per million)
What is Dissolved Oxygen in water?
Using a magnet to separate material in metallic from other materials.
What is Magneting?
One square/element from the periodic table.
What is an Element?
You can easily see the different parts of a ______
eg. pizza
What are Heterogeneous Mixtures?
Solutions with a higher concentration of solute
What is a Concentrated solution?
Name the best water acid or alkaline level.
What is 7?
Removing solids from liquids using a filter.
What is Filtration?
Any substance composed of identical molecules consisting of atoms.
What is a compound?
Physical combination of two or more substances in which the identities are retained and are in the form of solutions.
What are Mechanical mixtures?
Solutions with a lower concentration of solute
What is Dilute?
Name 2 reasons that we are running out of fresh water.
To convert it to freshwater is difficult and expensive
The human population is going up and we use more water
We waste water
Water pollution
________ involves using a sifter to separate solids that have varying sizes.
What is Sifting?
Any substance (solid liquid or gas) that is made up of only one kind of particle throughout.
What are Pure Substances?
Metals that are a combination of more than one substance but still look like one solution.
What are Alloys?
the exact amount of solute required from a saturated solution in a particular solvent at a given temprature
What is Solubility?
Over 97% of the earth is covered by ____________.
What is Salt Water?
_____ involves heating the solution until liquid turns into gas and leaves the solid behind.
What is Evapration?
How can you separate a mixture of sand, salt and water
What are filtering and evaporation?