P vs C changes
Melting of ice is a _________ change
What is a physical change?
What could you use to separate iron filings from wood shavings?
Use a magnet to remove the iron filings, leaving behind the wood shavings
State of matter where the particles are tightly packed
What is a solid
Luster is an example of a ________ property
What is PHYSICAL?
The 2 types of pure substances
Elements and compounds
Gummy bears dissolving in water overnight is a __________ change
What is physical?
What technique would you use to make coffee or to vacuum your rugs?
Filtration
This state of matter has a definite shape and definite volume
What is a SOLID?
Rusting is an example of a ________ property
What is chemical?
Is dry ice (solid CO2) an element or a compound?
compound
Digesting Dawn's breakfast pizza is a kind of ______ change
What is chemical change?
This technique takes advantage of the boiling points contained in a solution
What is distillation?
What states of matter are able to take the shape of the container it is in?
liquid and gas
taste
What is a physical property?
What is another term for a homogeneous mixture?
solution
When a tin roof rusts, this change is _______
What is chemical?
The making of rock candy involves this technique
What is crystallization (evaporation is OK too)
This state of matter has atoms that are constantly moving quickly and colliding with each other.
gas
2 chemical properties
What are reactivity and flammability?
Separating solid components of blood, bacteria from bacterial culture, and viral DNA can all use this technique
Centrifugation
Give at least 4 signs (indicators) that a chemical reaction has occurred?
What are:
*a gas is produced
*color/sound/odor change
*light produced
*precipitate produced (solid coming out of solution)
What are 3 methods for separating a homogeneous mixture?
distillation
chromatography
centrifugation
This state of matter has an indefinite shape but a definite volume
What is a liquid
The solid that comes out of a solution when a chemical rxn has occurred
What is a precipitate?
The Law of Conservation of Matter
Matter can never be created or destroyed, only changed/transformed