How do abiotic factors affect biotic factors p
How do abiotic factors affect biotic factors? p. H
p. H n n Scientists measure the p. H of environmental conditions such as soil and water The p. H can affect the ability of biotic factors to survive ¨ Fish in a lake ¨ Frogs in a stream ¨ Insects and worms in soil
The p. H scale 14 basic 7 neutral The scale is from 0 -14 n 0 -6 is acidic. n 7 neutral n 8 -14 is basic n 0 acidic
What influences p. H? n Air, ground, and water pollution Example: Acid Rain ¨ Nitrogen oxides (NO, NO 2) and sulfur dioxide (SO 2) from automobile and power plant emissions are converted into nitric acid (HNO 3) and sulfuric acid (H 2 SO 4) in the atmosphere. ¨ Normal rain has a p. H of 5. 6 (slightly acidic) ¨
Effects of Acid Rain: Damage to forests and soils, fish and other living things, materials and human health.
What do you know about Ocean Acidification?
The Equation to Remember CO 2 (g) + H 20 (l) <=> H 2 CO 3 (aq) <=> H+ (aq) + HCO 3 - (aq)
Item p. H Acidic/Neutral/Basic Distilled Water 6 Weak acid Saltwater (C and C) 7 Neutral Sparkling water 6 Weak acid Suave Shampoo (A and M) 6. 4 Weak Acid Lemons (R and L) 2. 4 Acidic Coca cola (A and E) 2. 8 Acidic Gatorade ( E and J) 3. 1 Acidic Vinegar (T and E) 2. 74 acidic Sprite (D and R) 3. 33 Acidic Baking soda 8. 29 Basic Borax (K and R) 9. 5 basic Soil 6. 3 Weak acid
Examples n Acids ¨ Battery acid p. H 1 ¨ Stomach acid p. H 2 ¨ Tomatoes p. H 4 ¨ Lemon juice p. H 2 n Bases ¨ Detergents p. H 9 ¨ Milk of magnesia p. H 10 ¨ Hair remover p. H 12 ¨ Oven cleaner p. H 13
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