Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate. Measuring- the actual measuring of the chemicals is difficult because of the meniscus of the liquid and the accurateness of the measuring cylinders. Also, the human eye causes errors such as this
] The eye could also have made mistakes in judging whether or not the cross had actually completely disappeared
] If the same person watching the reaction was working the timer, errors could occur in their co-ordination.
We could remove these errors by:
Y Making sure the bottom of the meniscus is read so that it is the true reading.
Y Using a burette to measure. This would remove the measuring errors associated with measuring cylinders, as they are correct to 0.1 cm where measuring cylinders are only 0.4. Burettes are a far more accurate way of measuring the correct amounts.
Y Use light sensors to detect when the cross is no longer visible. The experiment could be connected to a light sensor, and to a timer. These light sensors will detect when there is no light shining through the substance. This would automatically stop the timer and therefore make the experiment fairer and more accurate.
