Chapter 1, Problem 8STP

Interpretation Introduction

Interpretation:

Using the given table, the qualitative data true for the element sodium is to be given.

Concept introduction:

An element is a pure substance that cannot be broken down by chemicals. It made completely of one type of atom. Sodium is an element of the alkali metal group of the periodic table. It is represented by the symbol Na and has atomic number 11.

Answer to Problem 8STP

Color grey and symbol Na are the qualitative data that are true for the element sodium.

Explanation of Solution

Given information:

Physical properties of three elements:

Element	Symbol	Melting Point $(°C)$	Color	Density $(g/c{m}^3)$
Sodium	Na	897.4	Grey	0.986
Phosphorous	P	44.2	White	1.83
Copper	Cu	1085	Orange	8.92

Qualitative data is used for approximates and characterization. It is non-numerical in nature. It does not consist of numbers at all. It is collected by observing, interviewing or similar methods.

In the given table, symbol and color are the qualitative data for every element whereas melting point and density are the quantitative data as they are represented in numbers.

The qualitative data true for sodium is its symbol Na and color grey.

Conclusion

Hence, sodium’s symbol is Na and its color is grey areits true qualitative data.