Chemistry 2 Test Flashcards
What does density depend on
Mass and volume
What is matter what are some examples of items that are not made of matter
Matter is something that takes up space
Extensive vs intensive and example of each
Extensive depends on amount of substance
Intensive depends on type of matter
What is a physical property give some examples
Can be observed or measured without changing the composition melting malleability conductivity
Heterogenous vs homogeneous
Herero is 2 or more phases not uniform throughout
Phase
Part if a sample with uniform composition and properties
What is a substance know the two types
Matter that has uniform properties and definite composition element and compound
What is an element
Simplest form of matter that has a unique set of properties
What is a compound how can we separate a compound
Has two or more elements chemically. Index in a fixed proportion-not physically but chemically
What is a solution
A homogeneous mixture
What is a chemical property
A chemcial property has potential to change completion flammability reactivity and oxidation
What is a chemcial change
Produces matter with a different composition than the original
5 signs of chemical change
Change in color odor temperature produces light or sound
What is a barometer
Instrument that measure air pressure
What is the si unit for pressure
Pascal
What causes gas pressure
Collisions of gas particles against and objects
Is evaporation a cooling or heating process
Cooling
When liquid is boiling what happens to the temps true
Stays the same
What happens to boiling point as you increase in altitude
Decreases because less pressure
When a substance is in a solid state are the particles moving
Yes vibrating in a fixed position
What happens to kinetic energy when tempature is increased
Increase
Know the phase changes
Condensation gas to liquid
Melting solid to liquid
Sublimation solid to gas
