Chemistry Definitions
Chemistry Definitions or Properties of Water
Properties of Water
Periodic Table
Wetlands
100
A basic unit of matter and the smallest unit of an element.
atom
100
Which smaller, an atom or a cell?
atom
100
Describe the structure of a water molecule.
2 Hydrogen atoms, 1 Oxygen atom. Slightly negative charge because it is polar.
100
Which element has the SMALLEST atomic number?
Hydrogen
100
What are the 2 types of coastal wetlands?
salt marsh
mangrove forest
200
A particle within the nucleus of an atom that holds a positive charge.
proton
200
Tells how many protons each atom of that element has.
atomic number
200
________ have an unequal sharing of electrons. They are slightly positive & slightly negative
polar molecules
200
Which number is represented as "17", under the element's name?
atomic number
200
What are the 3 types of freshwater wetlands?
marsh, swamp, bog
300
A particle in the nucleus of an atom that has no electric charge.
neutron
300
Is formed when two or more atoms are joined together by a chemical bond.
molecule
300
How many atoms are in a molecule of water?
3
300
Which number is represented as "35.453" under the atomic symbol?
atomic mass
300
What are the %'s of Earth's FRESHWATER distribution?
Glaciers- 68.7%
Groundwater- 30.1%
Lakes, rivers, swaps, streams- 1%
400
Equivalent to the number of protons AND neutrons in the atom
atomic mass
400
________is the attraction between two different substances (why water is attracted to other types of molecules)
adhesion
400
______ is the attraction between particles of the same substance ( why water is attracted to itself)
cohesion
400
The Periodic Table classifies the elements into 3 major categories. What are the 3 categories that an element can be?
metals, nonmetals, metalloids
400
This type of coastal wetland are found along the southeastern coast with short, thick, tangled roots
mangrove forest
500
A pure chemical substance that is made up of one type of atom.
element
500
Water resists temperature change, both for heating and cooling
high specific heat
500
__________water molecules will “tow” each other along when in a thin glass tube.
capillary action
500
How many neutrons are in an atom of this element?
18.453
500
This type of wetland looks like a flooded forest with trees and shrubs sprouting from the water. Located in warm, humid climates. Often have Spanish moss draping in the trees
swamps