No student devices needed. Know more
20 questions
3. The poorest conductor of heat among metals is
(a)iron
(b) Mercury
(c) Calcium
(d) Sodium
Which of the following is true of all metals?
They react with acids to form Hydrogen
They are denser than water
They conduct electricity
They're silver in colour.
Able to be drawn into wire is
malleable
insulator
luster
ductile
Able to be beaten or hammered into shapes
luster
malleable
brittle
insulator
The shine on metal when light falls on it.
luster
brittle
malleable
tarnish
Carries heat or electiricity
insulator
conductor
luster
brittle
All metals, with the exception of mercury, are ___________ at room temperature.
solids
liquids
gases
plasma
Metals are hard because metals have a
sea of electrons that tightly hold the nuclei together
they form triple bonds
low melting point
high luster
Which of the following would be held together by the metallic bond?
Atoms of iron (Fe)
Molecules of CH4
Atoms of sulfur (S)
Units of NaCl
What happens when two negatively charged ions are pushed together?
they will repel (move apart)
they will be attracted to each other (move together)
Which statement describes the structure of copper?
It has a lattice of negative ions in a ‘sea of electrons’.
It has a lattice of negative ions in a ‘sea of protons’.
It has a lattice of positive ions in a ‘sea of electrons’.
It has a lattice of positive ions in a ‘sea of protons’
Which of the following lists of elements contain only metals?
Li, Al, Te
Ni, Pb, H
Na, Os, Ga
Ca, Zn, I
Explore all questions with a free account