Question

A. Fill in the blanks with suitable words:-
1. Iron is a _______ but carbon dioxide is a ________.​

Answer 1

Answer:

Iron (/ ˈaɪərn /) is a chemical element with symbol Fe (from Latin: ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in front of oxygen (32.1% and 30.1%, respectively), forming much of Earth's outer and inner core.

Allotropes: see Allotropes of iron

Boiling point: 3134 K ​(2862 °C, ​5182 °F)

CAS Number: 7439-89-6

Melting point: 1811 K ​(1538 °C, ​2800 °F)Carbon dioxide is an acidic colorless gas with a density about 53% higher than that of dry air. Carbon dioxide molecules consist of a carbon atom covalently double bonded to two oxygen atoms. It occurs naturally in Earth's atmosphere as a trace gas. The current concentration is about 0.04% by volume, having risen from pre-industrial levels of 280 ppm. Natural sources include volcanoes, forest fires, hot springs, geysers, and it is freed from carbonate rocks by dissolution in water and acids. Because carbon dioxide is soluble in water, it occurs naturally in groundwater, rivers and lakes, ice caps, glaciers and seawater. It is present in deposits of petroleum and natural gas. Carbon dioxide has a sharp and acidic odor and generates the taste of soda water in the mouth. However, at normally encountered concentrations it is odorless.

Explanation:

Answer 2

Iron is a metal but carbon dioxide is a gass