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Natasha_Volkova [10]
3 years ago
10

BRAINLIeSt TO FIRST Which is a correct method used in a scientific experiment involving acid and base solutions? (2 points) Sele

ct one: a. Using a pH test strip to measure the oxygen content of a solution b. Adding an indicator to a solution to test its acidity c. Adjusting the recorded pH measurements to prove the hypothesis d. Measuring the pH of a test strip by dipping it into an indicator
Chemistry
1 answer:
Komok [63]3 years ago
8 0

Answer:

B, adding an indicator to a solution to test its acidity

Explanation:

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The periodic table is a table that arranges elements based on their atomic numbers into groups and periods.

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               Group                             Other names

              1A or 1                               Alkali metals

              IIA or 2                              Alkaline earth metals

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            VIIA or 17                            Halogens

             O-18                                  Inert elements

             IIIB-IIB                              Transition elements

There are 18 vertical columns divided into 8 tall groups or main groups which are 1A to O. The short groups or subgroups are from numerals 1B to VIII.

The periodic table can be divided into four blocks based on the type of sublevels their valence electrons occupy.

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  • Group IIIA to O constitute the p-block
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  • The lanthanides and actinides makes up the f-block

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Periodic table brainly.com/question/2014634

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All phosphorus atoms have the same atomic number. Hope i helped
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