Chemicals and fertilizers

Carbon dioxide gas is colourless and odourless gas or extremely cold liquid under pressure or refrigeration. It will not burn. Carbon dioxide is a COMPRESSED GAS. It Can displace oxygen in air, it may accumulate in low areas and is a confined space hazard. Carbon dioxide is a very mild central nervous system depressant. Very high concentrations may cause headache, nausea, dizziness, sweating, restlessness and disorientation. Liquefied gas may cause frostbite. Where do you find carbon dioxide gas? CO 2 gas is used for the carbonation of beverages; for pH control; as a chemical intermediate; in chemical processing; as a food preservative; as an inert "blanket"; and in enhanced oil and gas recovery. Liquid CO 2 is used as a refrigerant; for low temperature testing of aviation, missile and electronic components; as a fire-extinguishing agent; for stimulation of oil and gas wells and for controlling temperature in chemical reactions. CO 2 gas is a by-product of carbonaceous ...

Probably where life first started Acts as a medium for biochemical reactions to take place. 60% of human body is water Has 5 important properties: Solvent It is a liquid which makes it good for dissolve things. It is a polar molecule - is has an unever distribution of charge, and is said to have polarity. This makes it a good solvent for polar solutes. It also has a hydrogen bond. Thermal Properties A substances heat capacity, is the amount of energy(joules) required to raise its temperature by 1 o C. Water has a hgh heat capacity. So it generally doesn’t vary in temperature too much - not greatly affected by environmental heat changes. Most organisms and biological processes can only live/occur within a small range - making water ideal. Surface Tension Water has a very high surface tension - the force that causes the surface of the water to contract to occupy least area. This is very important, because it plays a major role in getting water up tall trees/plants. It also allows some in...

Liquid Lawn Fertilizer: The Pros Because liquid lawn fertilizer comes in the form of a spray, your lawn will receive even coverage , thus decreasing the chance of burning it. Again, due to the spray form, it’s the application process is simple . Once you spray liquid lawn fertilizer to the roots and leaves, the effect is immediate ; your lawn will receive nutrients and ‘perk up’ in no time. With liquid lawn fertilizers, the combination of fertilizer and herbicide helps to ward off weeds , too. No more breaking your back hauling those hefty bags of granular fertilizer. With liquid lawn fertilizer, the only thing you carry around is the spray bottle (attached to the garden hose). Liquid Lawn Fertilizer: The Cons If you do not have a hose to attach to the container of liquid lawn fertilizer, then it’s essentially a waste of time to buy this form of fertilizer. Liquid lawn fertilizers are more costly than other fertilizer forms. Because a liquid lawn fertilizer re...

A lawn fertilizer spreader is not only a labor saving device; it’s a great way to make sure you apply materials in a uniform manner. A lawn fertilizer spreader is useful for spreading a range of materials: fertilizer, grass seed and even salt on your driveway. Larger spreaders are push-behind devices similar to a lawnmower. As you push a fertilizer spreader, the wheels turn a mixer that keeps the material in the spreader loose. Openings in the bottom of the hopper drop the material either directly to the ground or to a broadcast device that spreads the material over a wide area. Types Of Fertilizer Spreaders There are three main types of fertilizer spreaders: broadcast, drop and handheld. A broadcast spreader uses a rotating disk to spread fertilizer over an arc-shaped area. Broadcast fertilizer spreaders are good at covering a large area quickly. Accuracy is sacrificed for speed, however. Be careful around the edges of the fertilized area to avoid over-spray. A drop sp...