Final Flashcards
3 States of Matter
- Gas
- Liquid
- Solid
Physical Property
observed without chaining the composition
Chemical Property
change in composition
Physical Change
recognizable difference in appearance
Chemical Change (Reaction)
process of rearranging, removing, replacing, or adding atoms to a new substance
Element
pure substance that cannot be changed into simpler form of matter by any chemical reaction
Fahrenheit
1.8 x C + 32
Celsius
F- 32 / 1.8
Kelvin
C +273
Law of Conservation of Energy
- energy cannot be created nor destroyed
- energy may be converted form one form to another
- energy conversion always occurs with less than 100% efficiency
- all chemical reactions involve either a gain or loss of energy
Kinetic Energy
energy of motion
Potential Energy
stored energy
Subatomic Particles
- electron
- nucleus
- proton
Atomic Number
Mass Number
- the number of protons in the atom
- sum of the number of protons and neutrons
Isotopes
atoms of an element that have the same number of protons and electrons but different number of neutrons. the periodic table refers to the averaged mass number of an element
Who created the Periodic Table of Elements?
Dmitri Mendeleev
Covalent
Non polar
Polar
Diatomic
- attractive force due to the sharing of electrons
- equal share of electrons
- unequal share of electrons
- completely shared
Ionic
transfer of one or more electrons form one atom to another
-consists of a metal (cation) and a nonmetal (anion)
Electronegativity
measure of the ability to attract an electron in a chemical bond
- nonpolar: 0
- polar: 1.9
Naming Ionic Compounds
Name the cation and anion, but change the ending of the anion to ‘ide’
Naming Covalent Bonds
1 mono 2 di 3 tri 4 tetra 5 penta 6 hexa 7 hepta 8 octa 9 nona 10 deca
Combination
A + B —> AB
Decomposition
AB –> A + B
Single Replacement
A + BC –> B + AC
Double Replacement
AB + CD –> AD + BC
Combustion
contais CO2 and H2O