Ecology P2 Flashcards
Physical Properties
Any characteristic that can be observed using your 5 senses without changing the substance
Chemical Properties
Any characteristic that describes how matter interacts with another substance
Biological property
The characteristic of having all 9 features of living things
Physical Change
Change to the physical properties of matter, substance is not changed into a new substance
Chemical Change
Change to the chemical properties of matter, substance is changed into a new substance with new properties, cannot change back
Law of Conservation of Matter/Mass
Matter cannot be created nor destroyed,
The number of atoms/mass of the reactants equals the number of atoms/mass of the products.
Phase/State of matter
solid, liquid, and gas
Changed by changing temperature or pressure
Solid
Definite shape & definite volume
Particles packed together and vibrate but have fixed positions
Lower energy
Liquid
No definite shape but has definite volume
Particles spread apart
Medium energy
Gas
No definite shape & no definite volume
Particles spread far apart
High energy
Melting
matter changing from solid to liquid
⬆ energy, ⬆ particle movement
melting point= temperature substance melts at
Freezing/ Solidification
matter changing from liquid to solid
⬇ energy, ⬇ particle movement
freezing point= temperature substance freezes at
Vaporization/Evaporation
matter changing from liquid to gas
⬆ energy, ⬆ particle movement
Boiling point= temperature substance turns to gas at
Condensation
matter changing from gas to liquid
⬇ energy, ⬇ particle movement
Sublimation
matter changing from solid to gas
⬆ energy, ⬆ particle movement
