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44 Cards in this Set

  • Front
  • Back

Types of matter

1) Gas 2) Liquid 3) Solid

Periodic Table Columns

Groups

Periodic Table Rows

Periods

Special about Groups?

Similar chemical properties

1) Element name


2) Atomic number


3) Chemical symbol


4) Average atomic weight

Atoms

Smallest unit of an element that retain characteristics of that element.

Molecules

2 or more atoms chemically bonded together

Diatomic element

Atoms of molecule are the same

Compound

Atoms of molecule are different

Molecules‘ relation to Elements/compounds

Molecules are the smallest unit of an element/compound that retains the characteristic of that compound/element.

Relation of atoms, molecules and elements/compounds

Allotropes

Two forms of sane element with a different chemical structure and properties, e.g., O2, O2

Monatomic

O (uncombined, highly reactive)

Diatomic molecule

O2 (elemental form, combustion, sense-less, 21% inhaled/ 16% exhaled)

Triatomic molecule

O3 (ozone, more reactive than O2, criteria air pollutant in troposphere, protective layer in stratosphere)

Matter classification

Pure substances

Matter with fixed composition (Water H2O) (Oxygen O2)

Mixtures

Physical combination of 2 or more substances in variable amounts (air, water, salt, etc.)

Defining characteristics of mixtures

1) Component proportions may vary.


2) Individual properties of components are observable.


3) components separable by physical means

Types of mixtures

1) Heterogeneous- composition not uniform


2) Homogeneous- composition is uniform (solution)


3) Aqueous- solution in water

Matter Classification Chart

Representations of atoms and molecules

Atoms defined

1) empty space


2) most mass found in nucleus


3) electrons don‘t have particular orbits


4) statistics describe distribution of electrons


5) protons and neutrons in nucleus

Atoms are...

1) neutral


2) nucleus contains protons and neutrons


3) surrounding electrons in electron cloud

Representation of an atom

Back (Definition)

Nuclide

Nucleus with a particular composition

Atomic number definition

Number of protons in nucleus

Mass number

Total number of protons and neutrons in nucleus

Chemical symbol

Symbol of element

Isotopes

Atoms of an element with same number of protons but not neutrons. Same atomic number but different atomic mass number

Nomenclature of covalent compounds

1) first element unchanged


2) second element gets -ide


3) mono- for second element only

Prefixes for molecular compounds

Mono- 1 Di-2


Tri-3 Tetra-4


Penta-5 Hexa-6


Hepta- 7 Octa-8


Nona-9 Deca-10

Hydrocarbon

Only have C and H atoms. Organic molecules

Hydrocarbon nomenclature

Based on number of carbon atoms

Methane

CH4

Ethane

C2H6

Propane

C3H8

Butane

4 & 10

Pentane

5 & 12

Hexane

6 & 14

Heptane

7 & 16

Octane

8 & 18

Nonane

9 & 20

Decane

10 & 22