identify its cation and anion. (b) You are then required to carry out a few experiments to identify the cation and anion present in solid KA2. In all the experiments‚ the reagent should be added gradually until no further change is observed. Deduce what you can about KA1 and KA2. Observations should include details of colour changes‚ precipitates‚ and tests on gases evolved. Tests on KA1 Test (a) Add dilute hydrochloric acid to a small amount of solid KA1‚ then warm gently. (b) Dissolve solid KA1
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human’s heart rate to speed up‚ decrease‚ or stay the same‚ the volume of sound has a high effect on the heart. However‚ if people will let down the volume of sound‚ others would not be mannered by the increase in volume managing to the deadly heart attack. Sound within the community‚ for instance‚ traffic can cause a human’s heart rate of increase. Problem of heartbeat tends to be solved by seeing what kind of sound causes the increase of heart rates to place a termination to increase of heart rate
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Period 2 IB Biology SL Cinematic Suspense on the Heart Rate Research question: What is the effect of suspenseful movie scenes from Jaw on the Heart Rate Hypothesis: Suspenseful movies tend to trigger emotional release because films tend to transmit ideas through emotions rather than through intellect. It is an interesting thing to consider‚ given the fact that the person is just sitting there watching images. Therefore‚ it is surprising to see the effects that suspense has on the body during a movie
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The Effect of Position on Heart Rate This lab explores the effect of head position on an individual’s heart rate by having a subject move it’s head while simultaneously monitoring the subjects heart rate. There were three successive periods during which the heart rate was monitored that occurred in this order: a resting stage (subject sitting upright)‚ a stage with the head positioned between the knees‚ and a recovery stage (subject returns to upright position). The graph depicts a wide range
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Homeostasis – Re: Calcium Homeostasis refers to a stable internal balance or an internal equilibrium within the human body. The body and its systems work together to keep itself in the state of balance‚ but it mostly refers to how the human body reacts to different changes and keep itself within certain guidelines to insure that it can properly function. These reactions include a range of responses‚ from the release of hormones to regulate internal balances to sweating to lower body temperature
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The purpose of this lab was to determine how different conditions could affect one’s heart rate. In the life of a human‚ the heart beats approximately forty-five million times per year varying based off of factors like age‚ gender‚ physical activity level (1). Furthermore‚ throughout the course of a day‚ the heart can vary in its heart rate from a number of different environmental changes such as prolonged standing‚ altered breathing (inhale vs. exhale)‚ and jolts of excitement such as being startled
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Investigative Quest The purpose of this experiment was to find out how music affects the female human heart rate. Hypothesis My hypothesis is that female resting heart rate will increase as the music tempo increases. If the tempo is slower the heart rate will stay at resting heart rate or decrease. Variables The variables used in this experiment were: • The tempo of the music. • The subject’s heart rate. • The subject’s age. Controls The controls used in this experiment were: • How
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exoskeleton. The heart is located in the upper portion of the cephalothorax‚ which is located just in front of the first abdominal segment (UNT Lab Manual‚ 2017). We can measure the heart rate of the crayfish by measuring the change of the impedance of the circuit that is created by placing fine wires on
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affects a person’s heart rate (BPM)‚ systolic pressure‚ diastolic pressure‚ and Mean Arterial Pressure (MAP). Heart rate is measured by beats per minute while systolic and diastolic pressure are measured by millimeters of Mercury. I found the MAP by the following equation‚ MAP= Diastolic Pressure + ⅓(Systolic-Diastolic). We found out that heart rate and systolic pressure were highest right after and during exercise‚ while diastolic pressure and MAP were higher when the test subject was 2+ minutes after
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Introduction The heart is an extremely important organ in the human body‚ and it must be able to adjust the heart rate for when a person is resting or for when a person is running. Heart rate is defined as the number of heartbeats per unit of time‚ usually per minute (Medicine-Net). The heart rate is based on the number of contractions of the ventricles. The pulse is defined as a bulge of an artery from waves of blood that course through the blood vessels each time the heart beats (Medicine-Net)
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