Unit C Flashcards
(37 cards)
What is nitrogen fixation?
Process of changing “free” nitrogen so it can combine with other elements.
What is pollution?
A harmful change in the environment.
What is solid waste?
Garbage collected from households, industrial plants, and commercial buildings.
What is fuel combustion?
The burning of fossil fuels.
What is a neutral PH? Give an example
7, Distilled water.
What is an acid and what is a base?
Compound dissolved in water to form a solution with a PH lower the seven. Compound dissolved in water to form a solution with a PH higher than seven.
What is a week acid and what is a week base?
3-6 and 8-12
What is a strong acid and what is a strong base?
0-2 and 13-14
What does red and blue litmus paper indicate?
Red- no change=acid –> blue- base Blue-no change= base –> red-acid
What is an organic compound? Give one example.
A compound that contains Carbon, Petroleum.
What are macro and micronutrients? give examples
Macro- Needed in large amounts ex. Oxygen Micro- Needed in small amounts ex. Selenium
What are the 4 classes of organic compounds?
- Carbohydrates
- Lipids/Fats
- Proteins/amino acids
- Nucleic
What are the indications for Glucose, starch, fat/oil, and protein?
Benedict solution (glucose)- turns from blue to orange Iodine solution (starches)- turns from yellow to blue/b;ack Fat/Oils- leave a spot on a brown paper bag that light can pass through Biuret solution (protein)- turns from blue to purple
What is passive transport?
Does not require a plant to use energy.
What is diffusion?
Movement of molecules from an area of high concentration to an area of low concentration.
What is osmosis?
When water moves from an area with a high concentration of water to low.
What is active transport?
Plants require energy to move nutrients from an area of low concentration to high.
What is Hydrolysis?
The reaction of a substance with water.
What is a substrate?
Material on which an organism moves or survives on.
What is a biological indicator?
Fish, plants, worms, plankton, and bacteria.
What is an invertebrate?
An animal without a backbone.
What is spring acid shock?
(lowers PH) When acidic deposits build up on ice and snow.
What is a heavy metal? Give one example.
Metals that have a density of 5g/cm3. Ex. Mercury, copper, zinc, lead, cadmium, and nickel.
What is the PPM formula?
Amount of solute X
————————– —————
Amount of solvent 1 000 000
