Lecture 3 Flashcards
Physical properties
Mass, volume, density, solid/liquid/gas, taste, odor, color, magnetism, specific heat capacity, phase changes.
Chemical properties
Acidity, alkalinity, reactivity, stability, oxidizing ability, rusting, burning, etc
Law of Conservation of Mass
“Matter is neither created nor destroyed in
a chemical reaction.”
Mass of products = mass of reactants ALWAYS.
Law of the Conservation of Energy
“Energy can neither be created nor destroyed.”
Energy can be transferred but not destroyed. Always constant.
Definition of potential energy
Energy that is stored
Definiton of kinetic energy
Energy that is being transferred from one object to another or energy of motion
Definition of Calorie
amount of energy needed to raise the temp of water by 1 degree C
1 Calorie = x calorie
1000 calories (cals)
kcal = food calories T or F
True
1 cal = x Joules
4.184 joules
Temperature is x energy
Thermal
Heat capacity definition
Heat capacity is the amount of heat a substance
must absorb to raise its temperature by 1 °C.
-cal/°C or J/°C.
Specific heat definition
Specific heat = heat capacity of 1 gram of the
substance.
-cal/g°C or J/g°C
Specific heat chart
Amount of heat equation and definition
Mass x Heat Capacity x
Temperature Change
q = m * C *
ΔT
