select the correct answer.\nconsider the hypothesis below and answer the question that follows.\nadding salt…

select the correct answer.\nconsider the hypothesis below and answer the question that follows.\nadding salt to water increases the waters boiling point.\nif you performed an experiment to test this hypothesis, which action would introduce confounding variables into your experiment?\na. you use distilled water sourced from the same place.\nb. you add black salt to some specimens and pink salt to others.\nc. you add equal quantities of salt in all the water specimens.\nd. you use earthen clay pots to store and boil all the water specimens.

select the correct answer.\nconsider the hypothesis below and answer the question that follows.\nadding salt to water increases the waters boiling point.\nif you performed an experiment to test this hypothesis, which action would introduce confounding variables into your experiment?\na. you use distilled water sourced from the same place.\nb. you add black salt to some specimens and pink salt to others.\nc. you add equal quantities of salt in all the water specimens.\nd. you use earthen clay pots to store and boil all the water specimens.

Answer

Brief Explanations:

A confounding variable is something that could affect the outcome of an experiment other than the independent variable (in this case, salt). Using different types of salt (black and pink) in option B could introduce differences in chemical composition and impurities that might affect the boiling - point, aside from just the presence of salt. Using distilled water from the same place (A) and adding equal quantities of salt (C) are good experimental controls. Using earthen clay pots (D) is a consistent factor for all specimens and is less likely to be a confounding variable compared to different types of salt.

Answer:

B. You add black salt to some specimens and pink salt to others.