Question

name: dolly mendez date: 9 - 22 - 2025 block: 6

1. aleanyi wanted to know if food coloring affects how fast water boils. to test her

question, she labeled four identical containers #1, #2, #3, and #4. she poured
an equal amount of water into each container, but did not add any salt into container #1.
she added blue food coloring into container #2, red into container #3, and green into
container #4 and put them on the stove. aleanyi placed a thermometer in each
container and monitored the temperature at which the water boiled.
her data is shown below.

container	food color	boiling point
2	blue	105 degrees
3	red	103 degrees
4	green	97 degrees

what is the test variable (independent variable)? (remember the one you change)
a. the type of liquid.
b. the time it took for the liquids to boil.
c. the amount of water in each container.
d. the color of water in each container.
how do you know?

1. using the chart above what conclusion can aleanyi draw about food color and

boiling water?
a. if you add red food coloring to water, then it will increase the boiling temperature of
water.
b. if you add red food coloring to water, then it will result in an increase in the
waters boiling point temperature.
c. if you dont add food coloring to water, then it will result in having no effect on the
waters boiling point temperature.
d. if you add food coloring to water, then it will result in having no effect on the
waters boiling point temperature.

1. henry is a biologist. he wants to get information about communication habits of

bull frogs in different locations around south florida. he wants to be able to
change what he studies based on his findings. which type of investigation
should henry conduct?
a. create a questionnaire
b. field investigation
c. library research
d. controlled experiment in a
laboratory

Explanation:

Step1: Identify the test variable in the first experiment

The test variable (independent variable) is what is changed in an experiment. Aleany added different - colored food colorings to water in different containers. So the test variable is the color of water in each container.

Step2: Analyze the conclusion about food - coloring and boiling point

Looking at the data, the boiling points are different when different food colorings are added. So adding food coloring to water increases the boiling temperature of water.

Step3: Determine the type of experiment for Henry

Henry wants to study bull frogs in different locations around south Florida to get information about their communication habits. This is best done through field research as he needs to observe the frogs in their natural habitats.

Answer:

1. D. The color of water in each container.
2. A. If you add food coloring to water, then it will increase the boiling temperature of the water.
3. B. Field investigation