ELEMENTS,COMPOUNDS,MIXTURES PRESENTATION

ELEMENTS

• An element is a class of substances that can
• not be separated into anything simpler

EXAMPLES OF ELEMENTS

• Sodium
• Carbon
• Oxygen
• Nitrogen
• Hydrogen

COMPOUNDS

• Two or more substances
• Combined to make a new
• Substance

EXAMPLES OF COMPOUNDS

• Carbon dioxide (Carbon and Oxygen)
• Water (hydrogen and Oxygen)
• Sulfuric acid (Hydrogen,Sulfur, and Oxygen)
• Salt (Sodium and Chlorine)
• Vinegar (Carbon, Hydrogen, and Oxygen)

MIXTURES

• A mixture is pure substances
• That can be separated like a
• Compound

EXAMPLES OF MIXTURES

• Smog (smoke and fog)
• Mud Puddle (dirt and water)
• Air (nitrogen, oxygen, and other gases)
• Cement (sand, water, and gravel)
• Ocean water (salt and water)

TWO CATEGORIES THAT MIXTURES ARE DIVIDED INTO

• Solvents and Solutes

COMMON SUBSTANCES IN EARTHS CRUST

• Oxygen (46.1%)
• Silicon (28.29%)
• Aluminum (8.23%)
• Iron(5.63%)
• Calcium(4.15%)

COMMON ELEMENTS IN EARTHS CRUST CONTINUED

• Magnesium (2.33%)
• Potassium (2.09%)
• Sodium (2.36%)
• Titinium (0.565%)
• Hydrogen (0.14%)