1. Name the following:
(a) The characteristics of shining metals.
(b) Name the property of metals by which they can be beaten into thin sheets.
(c) Name a metal which is liquid at room temperature.
(d) Name the property in which metals can be drawn into thin wires.
2. State True (T) or False (F) :
(a) Metals are generally solid at room temperature.
(b) Non-metals are sonorous.
(c) Metals can bear a lot of stress because of their strength.
Answers
Answer:
a - luxzure
b - malleability
c - gold
d - ductility
Q 2 a - true
b
c true
Answer: 1)A) Metals are shiny and lustrous with a high density. They have very high melting and boiling points because metallic bonding is very strong, so the atoms are reluctant to break apart into a liquid or gas.
B)Metals on being hammered can be beaten into thinner sheets. This property is called Malleability.
Elements: Gold; Iron; Magnesium; Potassium;
C)Mercury
Mercury is a dense, silvery d-block element. It is the only metal that is liquid at standard conditions for temperature and pressure. The only other element that is liquid under these conditions is bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature.
2)A)TRUE
B)FALSE
C) FALSE
EXPLANATION:2)C)Metals have high tensile strength, that is they can be stretched to some degree without breaking. ... No two metals are absolutely identical.
B)Non-metals do not produce ringing sound when beaten. And thus, non-metals are non-sonorous.
C)State: Metals are solids at room temperature with the exception of mercury, which is liquid at room temperature (Gallium is liquid on hot days)