Asked by Martha
I know this is long but can someone just explain it to me? Please? Don't have to give the answer, I'm just confused :(
1. An experiment was devised to investigate the effects on the temperature of a cup of hot tea when lemon juice is added at different time intervals. Hot and cold water were used instead of tea and lemon juice. First, a container of water heated to 80°C was allowed to sit for 13 minutes. Its temperature was measured at regular intervals. Next, similar temperature measurements were taken for 20 minutes on a new container of heated water, but this time some cold water was added after the 3-minute reading. Finally, the procedure was repeated except that for this last test, the cold water was added after the 13-minute reading. The resulting recorded temperatures were plotted on the graph shown here.
(just remove the spaces) h t t p : / / i. imgur . com / GTgyRXv.png
Based on the information given here, answer the following questions about the experiment:
• What question was asked in the experiment?
• What was the hypothesis, expressed as an if-then statement?
• What were the independent and dependent variables?
• What was the control in the experiment?
• Were there any sources of error in the experiment? If so, what?
• What can be concluded from the data?
1. An experiment was devised to investigate the effects on the temperature of a cup of hot tea when lemon juice is added at different time intervals. Hot and cold water were used instead of tea and lemon juice. First, a container of water heated to 80°C was allowed to sit for 13 minutes. Its temperature was measured at regular intervals. Next, similar temperature measurements were taken for 20 minutes on a new container of heated water, but this time some cold water was added after the 3-minute reading. Finally, the procedure was repeated except that for this last test, the cold water was added after the 13-minute reading. The resulting recorded temperatures were plotted on the graph shown here.
(just remove the spaces) h t t p : / / i. imgur . com / GTgyRXv.png
Based on the information given here, answer the following questions about the experiment:
• What question was asked in the experiment?
• What was the hypothesis, expressed as an if-then statement?
• What were the independent and dependent variables?
• What was the control in the experiment?
• Were there any sources of error in the experiment? If so, what?
• What can be concluded from the data?
Answers
Answered by
bobpursley
What question was asked in the experiment?
What are the effects on temperature change if cool water is added at various times?
• What was the hypothesis, expressed as an if-then statement?
If cool water is to be added to a hot substance to cool it, then the best time is to add it is after several minutes.
• What were the independent and dependent variables?
Independent variable: when the cold water was added
Dependent variable: temperature
• What was the control in the experiment? Hot water without cool water ever added.
• Were there any sources of error in the experiment? If so, what? Probably in surrounding temperature of each cup.
• What can be concluded from the data? add the water near the final temperature desired to get max cooling effect.
What are the effects on temperature change if cool water is added at various times?
• What was the hypothesis, expressed as an if-then statement?
If cool water is to be added to a hot substance to cool it, then the best time is to add it is after several minutes.
• What were the independent and dependent variables?
Independent variable: when the cold water was added
Dependent variable: temperature
• What was the control in the experiment? Hot water without cool water ever added.
• Were there any sources of error in the experiment? If so, what? Probably in surrounding temperature of each cup.
• What can be concluded from the data? add the water near the final temperature desired to get max cooling effect.
Answered by
HAHHA
yeah no
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