Solutions Flashcards
(12 cards)
1
Q
Solutions
A
Homogenous mixtures containing at least one solvent and one solute
Solute- substance that is dissolved
Solvent- substance that the solute is dissolved in
2
Q
Aqueous solutions
A
Solutions in which the solvent is water
3
Q
Electrolyte
A
Compounds that form aqueous solutions that conduct electricity (ionic and acids)
4
Q
Non- electrolyte
A
Compounds that form aqueous solutions that do not conduct electricity ( mostly molecular except for acids)
5
Q
Acids
A
- conduct current, ph less than 7, corrosive, reacts with metals to produce hydrogen gas, tastes sour, neutralized by bases
6
Q
Bases
A
- conducts current, corrosive, ph more than 7, feels slippery, tastes bitter, neatralized by acids
7
Q
2 types of deposition
A
- Wet emissions that contact water up the atmosphere and then hit the ground as rain or snow
- Dry: gasses and particles absorbed by the earth; deposited on any surface then come in contact with water
Most deposition in Alberta is dry deposition
- Alberta soil is slightly basic due to the carbonate caused by erosion of limestone
8
Q
Buffers
A
- a buffer is used to resist the Ph change to soil or lake water
- the buffering capacity is the ability of a substance to resist Ph change when a strong base or acid is added to it
9
Q
pH and plants
A
- plants absorb nutrients into the roots from the soil, up to the leaves
- acid deposition changes nutrients so they are insoluble, plants can’t use them
10
Q
Leaching
A
- acids in soil makes metal ions available to plants
- plants tackle those nutrients into their roots when the dissolve in the soil or water and this is called leaching
11
Q
Acid deposition
A
- decreased root growth (biotic)
- prevents absorption of calcium (abiotic)
- reduce decomposing soil bacteria (biotic)
- lowering pH of water ( abiotic)
- corrosion of metals (abiotic)
- mercury causes damage to gills (abiotic affecting biotic)
- destroying waxy coatings on plants (biotic)
- methyl mercury traps tissues (abiotic affecting biotic)
12
Q
Biomagnoification
A
- a pollutant increases in concentration as it goes up the food chain, example being there will be more mercury in a polar bear than seal because the polar bear eats a lot of seal.
