Properties of Metals and Non-Metals
Question 1: What do you mean by electronegativity?
Answer:
Electronegativity is referred to the ability of the atom to attract electrons to form a chemical bond. So high electronegativity means it will attract electrons very easily, and low electronegativity means less ability to attract electrons.
Question 2: Why gold and silver is used for making ornaments?
Answer:
This is due to the Lustrous property of metals which makes gold and silver shiny and attractable.
Question 3: “All non-metals are poor conductors of electricity”. If the above statement is correct, give reasons for your answer.
Answer:
This statement is incorrect as graphite a non-metal which is a good conductor of electricity.
Question 4: What do you mean by metals and non-metals?
Answer:
Metals are bulk of elements present in the periodic table, it is shiny in nature, conduct heat as well as electricity, and malleable and ductile. For example iron, copper, gold and silver are Metals.
On the other hand, Non-Metals lie on the left side of the periodic table. Non-Metals does not show any metallic property like it does not conduct heat and electricity, neither malleable nor ductile in nature. Oxygen, Carbon are some examples of Non-Metals.
Question 5: Which metal is not solid at room temperature? Write the chemical formula of that metal.
Answer:
Mercury (Hg) is the only metal which is not solid at room temperature, it exists in liquid form.
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Properties of Metals and Non-Metals
Metals and Non-metals have different properties and reactivity with other elements. This difference between the physical and chemical properties of elements depends on their position in the periodic table. The physical properties of substances (or elements) include tendencies like conductivity, density, malleability, ductility, lustrousness, physical state, etc. Moreover, the chemical properties of elements can include reactions with other elements and compounds, in order to check their reactivity, also include electronegativity, etc. Here is the periodic table showing metals, non-metals, and metalloids at different position and are highlighted with different colors, as shown below: