normally recognised as a drug to most. Caffeine has an effect on your heart rate‚ (this is how fact your hear beats) Caffeine is able to change the way your body and mind works Chocolate is known to have traces of caffeine in it also The aim What is the point this experiment;- My aim in this experiment is to see what effects caffeine is prone to on the heart rate‚ Also to compare someone’s heart rate who has consumed caffeine to someone’s who hasn’t. This should give us a developed
Premium Heart rate Caffeine
Demonstration of the Rates of Reaction Between Sulphuric Acid (25mL ±0.5mL) and Magnesium (0.02g ±0.01g) Changing Due to Different Surface Areas By Chania Baldwin Introduction: When sulphuric acid and magnesium are added together‚ magnesium sulphate and hydrogen gas is created. To create such a reaction the atoms must collide with a sufficient amount of energy. Every reaction requires a different amount of energy to create the reaction‚ which is called the activation energy; when there is not enough
Premium Chemical reaction Chemical kinetics Surface area
Bank of Canada and Interest Rates Bank of Canada Will Raise Interest Rates The Bank of Canada has indicated that it has concerns over inflation being too low. (Parkinson). However‚ inflation has been rising and the Canadian economy has strengthened over the last several months. Keeping interest rates too low over a long period of time may have a tendency to over-inflate the economy and create asset bubbles while also creating pockets of greater debt‚ not dissimilar to those that contributed to
Premium Inflation Monetary policy Central bank
Madeleine Socio 125 T8 Nov 20‚ 2012 Teen Birth Rates in the United States Sociological imagination is a concept introduced by C. Wright Mills that allows us the ability to “think ourselves away” from familiar routines in our daily life. It also shows us a “vivid awareness of the relationships between experience and wider society”. An example of this concept is how the changing sexual norms in our society have influenced the issue of high teen birth rates in the US. Sexual behavior among teens has changed
Premium Human sexual behavior Sociology Sexual intercourse
Chemestry Lab Rates of Reaction (Picture from: http://sciencespot.net/Pages/kdzchem.html) The rate of reaction is how fast or slow a reaction is completed. This is important for factories and chemists all over the world. What happenes during a reaction is atoms or molecules that collide and form new molecules. You can affect this rate of reaction with: temperature of reactants or suroundings‚ surface area of reactants‚ if there is a catalyst present‚ but in theis lab the concentration was changed
Premium Chemical reaction Reaction rate Measurement
Sample D –TEACHER INSTRUCTIONS I.B. CHEMISTRY : PRACTICAL ELECTROCHEMISTRY INVESTIGATION : INVESTIGATE THE RATE OF ELECTROPLATING A METAL D DCP CE Goggles and Lab coats must be worn Background Students had been taught ‘Electrochemistry’ as outlined in the IB Chemistry syllabus. Investigation Design an experiment that allows you to investigate a variable affecting the rate of electroplating. Your research question must be focussed and specific and must enable you to carry out your experiment safely
Premium Electrolyte Electrochemistry Electrode
reported the findings of a study on teen suicide rates in Alaska. Using death certificates and U.S. census data to record trends in suicide rates among Alaskan teens ages 14-19‚ it was found that the teen suicide rate was 31.5 per 100‚000 persons each year. The study tested three hypotheses‚ the first being that the overall suicide rate of Alaska teens ages 14-19 during 1979-1993 would vary according to residence‚ gender‚ race‚ and age. Indeed‚ “suicide rates varied up to sixfold by race‚ gender‚ and local
Premium Suicide Death Bipolar disorder
Introduction: Basal Metabolic Rate has been defined as the minimum amount of energy needed by an animal to maintain the basic functions of survival (such as breathing). Several factors including age‚ gender‚ weight‚ and exercise affect the BMR. "BMR increases with increasing muscle tissue" therefore‚ exercising will enhance BMR while with increasing age‚ BMR is reduced (Scott‚ 2008). Also gender differences exist between males and females; it has been shown that males have higher BMRs
Premium Gender Male Energy
What happened to the R-R interval and heart rate after exercise? After exercise the R-R interval increased steadily from 0.48 to 0.68 seconds‚ while the heart rate BPM decreased steadily from 123 to 76; both trending back towards the resting values. What happened to the T-P interval during exercise? Outline what this means for ventricular filling time. During exercise there was a significant drop in the T-P interval which then steadily increased when exercise was completed. The T-P interval represents
Premium Heart Artery Blood
candle burned faster but they both burned at the same speed rate so it doesn’t really matter too much. Other brands could change the effect of the burn rate than other brands that are out there and they may also be made differently. There are more than one wax and that might change the burn rate of the candles. Some waxes may last longer than others. One thing that can be change the candle scents and see if that has any effect on the burning rate of the candle. There were no flaws in this experiment but
Premium