Basta Flashcards
- The material that makes up all things.
- Has mass and occupies space
Matter
Fixed or definite composition
Pure substance
contain 2 or more substances that are physically mixed but not chemically combined
Mixtures
Pure substances that contains one type of material
Elements
Contains 2 or more elements in a definite ratio
Compounds
not chemically combined but the elements are mixed
Mixtures
- composition is uniform throughout
- different parts of mixture are not visible
Homogenous
- composition varies from one compound to another.
- different parts of mixtures are visible
Heterogeneous
- Different shape and volume
- Moves very slowly
Solid
Has definite volume but indefinite shape.
- Particles move slowly and are close together
Liquid
- indifinite volume, Indifinite shape
- moves rapidly
Gasses
o served or measured without changing the identity of the substance
Physical properties
change in state, physical shape but no change in identity
Physical change
Measures the hotness and coldness
Temperature
Used to measure temperature
Thermometer
Below normal average temperature
Hypothermia
Above normal average temperature
hyperthermia
Coldest temperature possible
Absolute zero
formula for finding Kelvin (K)
C + 273.15
Formula for Kelvin (K)
C + 273.15
Formula for Celsius (C)
C = K - 273.15
Formula for Farenheit
TF= 1.8C+32
Reversible process
Melting and heating
soilid to liquid and vv. conversion
80 cal / 1g of H2O
or
334 J/ 1g of H2O
