How does the concentration of sucrose affect the weight Essay -- GCSE

How does the concentration of sucrose affect the weight of pieces of potato after osmosis has taken place? Aim The aim of this is experiment is to investigate how much sucrose is in a potato. We are going to investigate the effect of different concentrations of sucrose on the weights of pieces of potato after osmosis has taken place. Prediction I predict that the less concentrated the solution of sucrose is, the greater the weight of the potato will be. I predict this because osmosis is the movement of water from a region of high water concentration to a region of low water concentration through a semi-permeable membrane i.e. the cell wall of the potato. If the concentration of water inside the potato is high then the water will pass out through the cell wall, decreasing the weight of the potato. If the concentration of water outside of the potato is high then the water from outside of the potato will pass through the cell wall into the potato, thus increasing the weight of the potato. A low concentration of sucrose will have a greater ratio of water to sucrose, so more water will pass thorough into the potato in an attempt to even up the amounts of water and sucrose on both sides. If the concentration of sucrose outside of the potato is high then there will be less water to pass through into the potato and the potato will therefore lose water from inside in an attempt to even up the concentrations of sucrose and water on both sides. If the cell has lost water then it will not weigh as much as a cell full of water as the cell will be flaccid. If the cell has gained water then it will be turgid and will weigh more. The higher the concentration of the sugar solution, the faster osmosis will take place. I think this because the more sugar in the water, the longer it will take for it to balance out. Some background information Osmosis is the movement of water from an area of high concentration (lots of water particles) to an area of low concentration (few water particles). It is only the movement of water, as only water particles are small enough to pass through the semi-permeable cell membrane of the plant. Osmosis makes plants cells swell up if they are surrounded by a weak solution i.e. a lot of water, and they therefore become turgid. This is useful in giving support for cells and opening stomatal guard cel... ...in that will affect the next measurement. Our results were also left by a window, so the temperature could have been affected if the window was open or the weather outside was hot. To improve this experiment next time we can also make sure that we leave the test tubes in the test tube racks nowhere near anything that will affect the temperature i.e. a heater or a window. The conclusion may only be valid only within a certain range, if we were to use even more precise concentrations of sucrose solution then we can eventually find out the precise concentration that provides the correct answer. The concentrations used were slightly too vague as I had to say that the answer must lie between two amounts. However, if we were to improve the experiment by narrowing down the concentrations we will use even more then this will be time-consuming and very tedious. Therefore, it will not be a good idea to try and improve the experiment in this way. To extend this investigation we can also experiment changing the following variables: Þ Temperature of the experiment Þ Surface area of the pieces of potato Þ Weight of the potato Þ How long the experiment is left for.

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People with psych problems Like depression and anxiety have Increased likely hood of â€Å"bad trips† Hallucinogenic Properties: -Hallucinations (no rope on table, but a snake is on the table) -Illusion (rope on table is a snake) -Delusions (fixed false belief) -Interrogated Amnesia (Wake up next day, can not remember what happened) – Kinesthesia (crossing of the senses, see sounds, hear colors etc†¦ ) Hallucinogens and Brain Chemicals -Serotonin (5-HTH Receptor) -Some effect on dopamine, nor-epinephrine, acetylene's) sleep, Serotonin depleted brain afterward Physical Effects Increased Blood Pressure/Heart Rate -Inseminating -Blurred Vision -Enlarged Pupils -Sweating -Diarrhea -Muscle Cramps -Dehydration After effects of usage: -Confusion -Fatigue -Depression -Damaged Serotonin Neurons (with frequent abuse) Serotonin depletion (For next 2 weeks) Includes numbness in emotions LSI – 1938 Sand's PharmaceuticalsFBI tested as a mind control drug in sass Timothy L eary, sass way to get in touch with your feelings sass resurgence of use, with the advent of the rave (urban people in ass/ass, and homosexuals) sass much more into high school/teenage use Northern California is where most USA LSI made in alcohol type solution, put it on blotter paper 1 1 lbs of material can supply the entire country Slows reaction times and Judgment, suicide in bad trips, confusion causes suicide also. Ecstasy The most popular drug currently, mix of amphetamine and psychedelic, sass use for weight loss. SASS psychiatrist studied use in treatment of PATS, patients reported it helped them get in tough with their feelings and explore the traumas DEAD in mid sass outlawed it sass rave scene Effects; Energy, empathy, love, dance, sexual desire southwest raves, 2-3 day long dances, 2-3 people die from temp issue Not taken then sat on couch or as only drug at the same time Mostly pill form.No regulation, made in homemade lab, no idea what is in it, sometimes put ephedrine , or PC. Sometimes just pure chalk. Unpredictable, next day very depressed/suicidal, tolerance, mental ere high, physically not so much. Astatine, anesthetic, put you out of surgery, vets use it, most of the time people steal from medical. Euphoria, no pain, lots of amnesia, used as date rape drug PC also anesthetic, not usually used in medicine anymore, unpredictable, bizarre behavior, very hard to titrated the dose, from pleasant to seizures etc.. Aggression and suicide Are they addictive, generally more psychological addictive then physical, but do have some physical. Can they cause psych disorders?Thought about cause of psychotic disorders or dementia, it is possible, there is a higher risk Main danger is the increase in teenage use, 1 in 10 have used in the last month, they are cheap, easy to hide, don't realize the seriousness of the drugs. Are they treatable? No med BUT treatment centers do treat. Usually go because of another drug. Change of lifestyle is important for treatm ent, no more raves or clubs it is easier to abstain. Controversy of Astatine in psychiatry, can give for acute suicidal, immediate assistance. Can divert a lot of hospitalizing for suicidal ideation. Can be opening Pander's box, mainly because of drug seeking. Inhalants Todd Clement, MD Adolescent and Adult PsychiatristInhalant abuse, 1000 commonly used household items also laughing gas, sometimes even gasoline vapors! Active ingredient is Talking, very damaging to the brain, very cheap to obtain or have around the house. Dangerous for children How it's Done -Sniffing (directly from container) -Huffing (soaking rag and then putting in mouth, socks, gloves) -Bagging (spray in bag then breath in) -Ballooning (in Balloon similar to bagging) -Spraying (spray into mouth into the throat) -Sleeking (spray it or pour it into cuff, and can use throughout the day) 12-17 largest users, 4th most abused substance (behind alcohol, nicotine, marijuana) in 4 High School say they have used, 1 in 10 8th graders have tried What made you start?A friend or older kid talked into it Hispanic kids particular at risk, and Kids that spend a lot of time home alone Children/teens don't usually note the risk Young adults also use, low social-economic status and less educated, may be because they are a cheap high â€Å"Quick Drunk† few seconds to get to brain Mental Effects -Mood Elevation -Reduced Inhibitions -Excitement -Impulsiveness -â€Å"out of Body' experiences -Drowsiness/laryngitis -Dizziness -Slurred Speech -Balance Problems Dreamy stupor at high doses- violent or suicidal High lasts only about 30 minutes After use irritable headache tired DANGERS -Sudden Sniffing Death Syndrome (Suffocation/Asphyxiation, displace 02 in brain) – Asphyxia from vomiting -Coma -Seizures -Suicide -Brain Damage (brain uses 25% of 02 supply, cutting off even for a few minutes will kill cells) Sends signal to heart, so increase Blood flow (increased HER and BP), small capillaries will pop from surge, then 3-4 cells die since that is the only feed for them.Outline: Is the toxic substances, can destroy the mainline sheath, that helps it work eight, like electrical lines and there coverings, Brain looks like an MS patients, Can damage hearing vision and cerebellum (destroys balance) Nitrates: sometime also toxic substances 12-17 brain still develops, so can derail developments Brain damage, hearing loss, sense of smell, damage speech, heart attack, Nausea/ Vomiting, Liver damage, kidney damage, Bad pain quickly, not Just 12-17 years old getting addicted, Dental Field or Anesthesiologist abuse nitrous, Long Term Effects – Permanent Memory Problems, dementia at early age, effects hippo-campus (helps consolidate memories) Tremors Balance Problems Emotional Instability Can it be treated, yes BUT, most treatment centers don like, due to failure rate, and long term recovery needs, really a gateway for other use How can I keep my Child safe?Know what is in your house, keep it out of there reach and keep an inventory, educate your children of dangers, know what they are doing especially if they are home alone ALTO, know where they are spending their money Bottom line, know your kids and watch them Patient with problems, encourage them to get help, intensive outpatient treatment is good. How do I know if my child is using? Chemical odor on breath/clothes -Rags or empty aerosol cans -Paint Stains on clothes/body -slurred speech/poor balance, appearing drunk -change in personality -Change in Grades Prescription Drug Abuse Michael R. Eyeless, MD Eyeless and Crawford Consulting ACE Addictions and Recovery Series This is probably the one that goes to church on Sundays.

Medieval Castles the Start of the Modern Age Essay examples

Medieval castles were the start of the modern age. They had forms of government, and everyone had a specific job. It was, however, still primitive to modern standards, because they still had a King and Queen and no indoor plumbing. This blend of primitive and modern makes medieval castle life an interesting and intriguing time to live. A medieval castle usually had five main buildings: The hall, the kitchen, barracks/living quarters/supply buildings, water rooms, and a chapel. The chapel was the most influential and sacred place of the entire castle. Usually the chapel would be two stories tall to separate the royal family from servants. The royal family would be on the second floor while the servants would be on the ground floor.†¦show more content†¦The royal family would sit astride him on wooden benches. Most halls were arranged much as a church was with wooden benches facing the king. The tables that everyone would sit around had white linen cloth on them and th e tables could also be easily removed. If the king was especially prestigious he would have a stationary table that would never move. The hall often had stone or wooden pillars the supported its wooden roof and if the hall was on the second floor it was supported by stone or wooden pillars as well. The floor that these pillars supported was almost always wooden or if they could afford it stone vaulting. The floor was often wooden and covered in rushes and herbs that would be changed periodically. Carpet was only used on walls and tables until the fourteenth century. The windows of the hall were often just wooden shutters although some did have tinted glass in later time periods. The hall was often the most beautiful and decorated place of the castle with the church being a close second. The kitchen was the main area for food preparation and storage. 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