Density
Mass/Volume
Mass
Density x Volume
Volume
Mass/Density
Temperature
The average kinetic energy of the individual particles
Percent Error Calculation
Measured value-Actual value/Actual value x 100
The most metallic elements are located in the...
Bottom Left
Most non-metallic elements are located in the...
Top Right
When reading scales...
Record all certain digits then estimate one uncertain digit further (beyond scale available)
To determine sig-figs if there is a decimal present...
Start at the left and count till you encounter a non-zero number, then that number and everything to the right of it is significant.
To determine sig-figs if there is not a decimal present...
Start at the right and count till you see a non-zero number, then that number and everything to the left of it is significant.
When working with acids and water...
Add the acid slowly to the water while stirring constantly.
Elements and compounds are...
Substances
Intensive physical properties
Independent of the amount of substance present ex: density, color, and melting point
Extensive physical properties
Dependent upon the amount of substance present ex: mass, volume, and length
Elements cannot be...
Decomposed into simpler substances
Compounds are usually broken down by...
Chemical Changes
The process of ascending a heating curve is...
Endothermic
Going down a heating curve is...
Exothermic
Exothermic reactions always...
Release heat
Endothermic reactions always...
Gain heat
Heat always flows from...
A higher temperature to a lower temperature
The # of joules per gram required to melt ice at its melting point is called...
Heat of Fusion
Heat of Fusion for Water....
334 J/G
Heat of Vaporization for Water...
2260 J/G
When asked to find the # of joules needed to change x grams of water to ice...
Multiply x grams by 334 J/G
Deposition
Gas?Solid
A mixture of ice and water is in equilibrium at STP, the temperature is...
0�C
The Conditions of pressure and temperature that exist when ice melts at its normal melting point are...
1 atm and 0�C
As a 1 gram sample of H2O(L) changes to H2O (G) the potential energy...
Increases
As a 1 gram sample of H2O(G) to H2O(L) the potential energy...
Decreases
C+273=
K
K-273=
C