How can you tell the difference between plastics? (What measurement can you use?)
Density
Does this mean greater than or lesser than 9? <9
less than
If your piece of plastic floats in water (density = 1 g/mL) but sinks in vegetable oil (density = 0.9 g/mL), what is the density
0.9-1 g/mL
What is plastic made of?
POLYMERS!
What is the way to dispose of food waste to reuse it as fertilizer?
Compost
If a piece of plastic sinks in water (density = 1 g/mL), what is it's density?
>1 g/mL
What is a singular molecule called? As part of a polymer molecule?
Monomers
How many different kinds of recyclable plastic are there?
7
How can groundwater get contaminated?
Saturated chemicals in the groundwater, runoff chemicals saturated in the groundwater, etc.
What is permeability?
Measure of the ease for gas/liquid to pass through a material?
If your piece of plastic floats in vegetable oil (density = 0.9 g/mL) and floats in rubbing alcohol (density = 0.78 g/mL), what is the plastic's density?
<0.78 g/mL
You have the option between a type 1 plastic water bottle and a type 5 plastic water bottle, which one would you chose to get it recycled easier?
Type 1
What does it mean that there are naturally occurring polymers?
Polymers can be made on their own through chemical bonds--not just in a lab
What is porosity?
Measure of pores/air spaces
What is an example of a synthetically made polymer?