Consider the Following Properties of an Element: (I)It Is Solid

question 156

Multiple Choice

Consider the following properties of an element: (i) It is solid at room temperature.
(ii) It easily forms an oxide when exposed to air.
(iii) When it reacts with water,hydrogen gas evolves.
(iv) It must be stored submerged in oil.
Which element fits the above description the best?

• A)sulfur
• B)copper
• C)mercury
• D)sodium
• E)magnesium

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Definitions:

≠ Symbol

A mathematical symbol that denotes inequality, indicating that two values are not equal.

Directional

Pertains to hypotheses or research that specify a direction (increase or decrease) in the expected outcome.

Null Hypothesis

A default hypothesis that there is no significant difference or effect, typically to be tested against an alternative hypothesis.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect exists between certain characteristics of a population or data.