Although some water molecules will spontaneously adopt the vapour form at all temperatures, water is nothing like as volatile as other similar molecules. This is fortunate, as it ensures the persistence of surface water in most climate zones typical of the Earth’s surface. It also explains why the wholesale conversion of water to vapour (i.e. by boiling to form steam, which is just the word for hot water vapour) occurs only at temperatures in excess of 100 ° C: far higher than would otherwise be expected for a molecule of its size and shape. Yet again, this proves crucial to the success of carbon-based
Task 1 M1 Describe the scientific principles behind each of the three procedure above. Vacuum filtration is a procedure when a sold needs separating from a solvent to react the mixture. Then the mixture of a solid is measured through the filtration paper in a Buhner funnel. The liquid is drained through the funnel into the flask. Equipment • Filter paper • Buhner funnel • Tubing • Clean solvent • Disposable dropper Method 1.
The documentary More than Honey examines how honeybee colonies in Australia, California, China, and Switzerland operate, as well as the challenges these honeybee colonies have faced as a result of human interference. As a result of watching this film, I gained a greater understanding about how humans are taking advantage of bees in order to fuel their own needs. Humans are treating these delicate yet incredibly intelligent and hardworking insects as if they are animals used for manual labor. Furthermore, breeders are interfering in the breeding process by attempting to create more colonies. More colonies equates to more bees, which further equates to higher profit margins for the breeders.
Emma Rosandich Mahziar Sakiani Period 1 Bubble Lab Report Background Research: Bubbles are basically a very thin film of soapy water that is enclosing air that forms a hollow sphere with an iridescent surface. The surface of water in made of hundreds of molecules that stick tightly together because of intermolecular forces and surface tension. Surface tension helps the bubble keep its shape. Soap molecules have two ends- one end that sticks to water, and the other that is repelled by water. Bubbles are round because they are ‘minimal surface structures’, which means that bubbles hold the least possible surface area they can.
Situation Honey bee is One of the world's most important creatures. These little insects are the pollinators that most of our crops depend on to set fruit. Honey bees are so important, in fact, that we have them to thank for 1/3 of the food We eat, including 80% of our fruits and vegetables. Crops that are highly dependant on honey bee pollination include avocado, almonds, kiwi and apples. But, Nowaday the shrinking of bees population related to human activity, such as pesticides, urban development/rural encroachment, radio frequencies, global warming etc.Recording to some experiments, Non Lethal exposure of honey bees to Thiamethoxam causes high mortality due to homing failure at levels that could put a bee colony at risk of collapse.Simulated exposure events on free-ranging foragers labeled with a radio-frequency.identification tag suggest that homing is impaired by thiamethoxam intoxication.
Abstract: A meniscus is a piece of cartilage found where two bones meet. This joint space distributes loads to protect the articular cartilage of the knee joint from too much stress. Injuries to these regions increase the risk for knee osteoarthritis, can disrupt regular function, and do not heal. The goal of meniscus tissue engineering is to use regenerated tissue in order to restore the normal function of the meniscus. The main purpose of this study is to design 3D scaffolds that can maintain the shape and structural components of the meniscus to provide support for cell-based meniscus regeneration.
Our aim is to provide pure all natural beeswax products hence, we thoroughly check the quality of the raw materials used for production. Consumers are free to check in the build section of our shop wherein users could customize the beeswax candles prior to purchase. 2. Are your beeswax candles, organic? Yes, indeed, the beeswax candles we produce are all organic and molded straight from the beehive capping.
This technique utilize an extracting phase-coated fiber (polymer liquid or solid sorbent) which extract analytes of different types from either gas or liquid phase.  Principle – Its mechanism is similar to that of Solid Phase Extraction except the extraction solvent volume is very small (less than 1 microliter). The main principle of this method is adsorption and desorption. It is a micro-extraction technique utilizing a syringe-like device which protects the sample-coated fiber inside.  The amount of adsorbed analyte by the fiber is proportional to the sample concentration in equilibrium and depends on the analytes’ distribution constant and the thickness of coat.
The concrete stress increases with distance from the crack, due to the steel-concrete bond, until at some distance from the crack, the concrete stress is no longer affected by the crack, as shown in Figure 1(b). Slip at the concrete-steel interface in the region of significant bond stress causes the crack to open. The concrete stress increases with distance from the crack, due to the steel-concrete bond, offering some resistance to the applied load, which is the ‘Tension Stiffening’ effect in
Water in gas form would refer to water vapour that can be visibly seen in clouds and fog. The solid state in which water can be seen on earth would be ice caps, icebergs and glaciers. The water that makes up the hydrosphere constantly revolve and moves in and around the earth in a cycle called the water or hydrologic cycle. Dunn, Margery G. (Editor). (1989, 1993).