Card Set Information
Chemeketa chemistry 121 general
either an element or compound which can not be separated into another kind of matter using chemical or physical process.
2 or more substances (either homologous or heterologous)
Volume formula from Mass and Density
Mass formula from volume and density
Mass over volume D=M/V
contains exactly 2 atoms (alike or dislike)
7 diatomic molecules:
H, N, O, F, Cl, Br, I
2 or more atoms with no charge
2 or more atoms with + or - charge
+ charged ion
- charge ion
below the line (indicates # of molecules)
the element/chemical's ability to react to form new substance.
physical existence (color, taste, odor state of matter)
substance undergoing chemical change to become the product
law of conservation of mass
The mass of the products equals the mass of the reactants. In other words, no change is observed in the total mass of the substances involved in a chemical reaction.
capacity to do work
energy possessed due to it's motion
how is a calorie quantified?
the quantity of energy required to heat H2O by 1 degree Celcius
what is Delta (triangle here)
what is specific heat?
Quantity of heat needed to change the temperature of 1 gram of substance by 1 degree C.
Chemical change defined:
a new substance is formed that has different properties and composition from the original.
Define physical change
changes in size shape or density (boiling point, freezing point, melting point).
electricity passing through water
Law of conservation of energy
energy can be neither created nor destroyed, though it can be transferred from one to another.
"energy can be transformed, but can not be created or destroyed."