Scientific Method
According to the scientific method, all experiments must be ___________ !
What is fair/controlled?
What are the 3 states of matter?
What is solid, liquid, gas?
I add salt to water and dissolve it. Is the salt called a solute or a solvent?
What is solute?
What is the name of the technology that we learned about and have introduced to Lake Ontario?
What are our two types of mixtures?
Solutions and mechanical mixtures
When a variable is being measured or tested we call it the __________ variable
what is dependent variable?
What is an example of a pure substance?
answers may vary. Milk, gatorade, chocolate milk, etc
I add salt to water and dissolve it. Is the water called a solute or a solvent?
What is solvent?
List 2 methods of cleaning oil spills (use the scientific terms)
What is boom, skimmer or sorbents
boiling sap to make maple syrup is an example of ..........
What is evaporation?
When a variable is being changed or manipulated we call it the ___________ variable
What is the independent variable?
What is an example of a mechanical mixture?
answers may vary. cereal, pizza etc
I add salt to water and dissolve it. I just created a _______________
what is solution?
What is one real life problem to cleaning oil spills or plastics from our lakes or oceans?
too expensive, too much of it, microplastics...
The separation of objects attracted to magnets from those not attracted to magnets is called?
What is magnetism?
When a variable remains the same and unchanged we call it the ___________ variable
What is control variable?
Was the black or brown marker in our paper chromatography lab an example of a pure substance or a mechanical mixture?
what is pure substance?
What are two things that could affect the rate of solubility?
what is temperature and particle size and stirring?
Oil spills are not always accidents, what is one example of it not being an accident?
Sometimes tanker captains tell their workers to clean out the tanks causing oil to be flushed into the sea
What is insoluble?
What is the skittles lab?
Come up to the board and draw what tiny particles would look like if you put gas in a closed container
tiny particles are spaced out
Some people say the powder in jello packages are very difficult to dissolve. What advice would you give to make it dissolve faster/better?
Use hotter water or stir faster/harder or make sure the powder is broken down to smaller pieces
Approximately how much plastic are in the great lakes? (Hint: 1. __ Million)
Why might we use chlorine during the water filtration process?
What is to kill bacteria?