unit 1 subtitle 1 Elements
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Transcript of unit 1 subtitle 1 Elements
Elements
Miss Sofía Paz
9th Grade
ElementPure substance that cannot be
broken down into other substances by chemical
means.
Atoms (Smallest possible particle)
Formed by
All atoms of an element have the same number of
protons.
Anything that occupies
space and has mass
Element
Matter
Basic ingredient
Soil Water
RockWood
Metal
AnimalsPlants
118 elements
92 Natural occurring
25 essential to life
C,H,O,N represent 96%
26 synthetic elements
Element critical to health that makes up less than 0.01 percent of body
mass
Trace elements
The fact that trace elements are required in minutely small doses (less than 100mg/day) does not mean they can be ignored. Trace elements are among THE most
important factors in maintaining and recovering health
The need for trace elements
• BoronDeficiencies of boron
can contribute to osteoporosis.
• Boron• Copper
• Iodine• Selenium
• Zinc• Iron
AlmondApple (red)AvocadoBananaBeans (red kidney)
Brazil NutsBroccoliCarrotCashew Nuts (raw)Celery
• CopperDeficiencies of copper can cause:
Premature hair grayingSterilityPremature wrinkling of the skin
LiverOystersSesameNutsCocoaChocolateLobsterSun flower seeds
• IronEssential for
carrying oxygen in your blood.
• IodineDeficiencies of
iodine can cause a thyroid imbalance or reduce fertility.
SeaweedShrimpMilkTurkey
Eggs
Cocoa Liver Oysters
ClamsCaviarDried appricots
• SeleniumDeficiencies of selenium can cause people to age prematurely or to have
slower than normal recovery from illnesses.
SeafoodMeatRice Bread
NoodlesEggsOatmeal
• ZincDeficiencies of zinc can
cause sterility, impotence and even
depression.
OystersLiverRoastbeefDark chocolate
CocoaLambPeanutsCrab
COMPOUNDS
COMPOUND
Is a substance containing two or more elements that are chemically combined in a fixed ratio.
Sodium ChlorineSodium chloride
(NaCl)
• Compound’s properties may differ from those of the elements that compos it– NaCl (Yellow gas + gray metal)– H2O (Is liquid while O and H are gases)
• Most compounds found in organisms are more complex.• Sugar (C, H and O).• Muscles (C, H, O and N).
ActinidesLanthanidesNoble gasHalogenNon Metal
Semi Metal
Basic Metal
Transition Metal
Alkaline Earth
Alkali Metal
ROWS: Periods Atomic number and
energetic level
COLUMS: Group, similar chemical properties
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Chemicool periodic table
http://www.chemicool.com/
Interactive periodic table