Difference between revisions of "GCSE Chemistry Required Practical: Investigating Temperature Changes"
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==Key Stage 4== | ==Key Stage 4== | ||
| + | {{#ev:youtube|https://www.youtube.com/watch?v=tKxcQYZ2YH8}} | ||
===Meaning=== | ===Meaning=== | ||
Investigate the effects of a [[variable]] on the [[temperature]] change during the [[Chemical Reaction|reaction]] between two [[chemical]]s. | Investigate the effects of a [[variable]] on the [[temperature]] change during the [[Chemical Reaction|reaction]] between two [[chemical]]s. | ||
===Method=== | ===Method=== | ||
| − | ====[[Temperature]] Change and [[Volume (Space)|Volume]] of [[Alkali]] used to [[Neutralise]] an [[Acid]]==== | + | ====[[Temperature]] Change and [[Volume (Space)|Volume]] of [[Alkali]] used to [[Neutralise (Chemistry)|Neutralise]] an [[Acid]]==== |
#[[Measure]] exactly 30ml 2[[Molarity|M]] [[Hydrochloric Acid]] using a [[Measuring Cylinder]]. | #[[Measure]] exactly 30ml 2[[Molarity|M]] [[Hydrochloric Acid]] using a [[Measuring Cylinder]]. | ||
#Add the 30ml of [[Hydrochloric Acid]] to a polystyrene cup. | #Add the 30ml of [[Hydrochloric Acid]] to a polystyrene cup. | ||
| Line 12: | Line 13: | ||
#Return the lid immediately and stir with the [[thermometer]] while observing the [[temperature]]. Once the [[temperature]] stops increasing, record this [[temperature]]. | #Return the lid immediately and stir with the [[thermometer]] while observing the [[temperature]]. Once the [[temperature]] stops increasing, record this [[temperature]]. | ||
#Repeat steps 4-6 until a total of 40ml of [[Sodium Hydroxide]] [[solution]] has been added. | #Repeat steps 4-6 until a total of 40ml of [[Sodium Hydroxide]] [[solution]] has been added. | ||
| + | #Repeat the experiment another 2 times to calculate an [[Mean Average|average]] for each [[results|result]]. | ||
Latest revision as of 11:31, 13 April 2019
Contents
Key Stage 4
Meaning
Investigate the effects of a variable on the temperature change during the reaction between two chemicals.
Method
Temperature Change and Volume of Alkali used to Neutralise an Acid
- Measure exactly 30ml 2M Hydrochloric Acid using a Measuring Cylinder.
- Add the 30ml of Hydrochloric Acid to a polystyrene cup.
- Add a lid with thermometer through the middle to measures the starting temperature of the solution.
- Using Measuring Cylinder (that has not been used for the acid) measure exactly 5ml 2M Sodium Hydroxide solution.
- Briefly remove the lid to add the 5ml Sodium Hydroxide solution to the polystyrene cup.
- Return the lid immediately and stir with the thermometer while observing the temperature. Once the temperature stops increasing, record this temperature.
- Repeat steps 4-6 until a total of 40ml of Sodium Hydroxide solution has been added.
- Repeat the experiment another 2 times to calculate an average for each result.