Which of the following statements is true regarding the physical state of metals and nonmetals?
All metals are liquids except mercury, which is a solid.
All metals are solids except mercury, which is a liquid.
Nonmetals are either solids or liquid , except bromine, which is a gas.
Nonmetals are only gases.
Which of the following is a characteristic electron configuration of the last energy level in most metals?
1, 2, or 3 electrons
4 electrons
8 electrons
5, 6, or 7 electrons
Which property is most likely to be observed in a metallic element compared to a nonmetallic element?
Non-conductive nature
Metallic luster
Brittle texture
Low density
What is the common property of both sodium and copper?
Physical state
Density
Colour
Melting point
What term describes the force of attraction in a metallic bond?
The attraction between neutral atoms.
The repulsive force between negative ions.
The ionic bond between lattice structures
The attraction between positive metal ions and a cloud of free-moving valence electrons
Which of the following questions helps in the classification of some elements to metals and nonmetals?
Is it liquid?
Is it solid?
Is it brittle?
Is it colored?
All the following are properties of the sodium element, except ................
formable
bad electrical conductor
has metallic luster
a metal
How are alloys typically expressed in terms of composition?
Through their crystalline structures
Using molecular formulas
As mixtures, usually not expressed in molecular formulas
As homogeneous mixtures without fixed ratios
What is the arrangement of atoms in solid metals known as?
Ionic lattice
Metallic crystal lattice
Covalent lattice
Molecular lattice
How do metals typically differ from nonmetals in terms of physical properties?
Nonmetals have high melting points.
Metals are good electrical and thermal conductors.
Metals are brittle and non-lustrous.
Nonmetals are ductile and malleable.
Which of the following properties is typically found in metals but not in nonmetals?
Ductility
Formability
Malleability
All of the above
Which property of metals is directly influenced by metallic bonds?
Electrical insulation
Solubility in water
High melting points
What is a common characteristic of nonmetals like carbon and sulfur?
High electrical conductivity
Brittleness and opacity
High thermal conductivity
What is the primary application of bronze alloy ?
Jewelry, medals, and statues
Automotive parts
Electrical wiring
Aerospace components
Which of the following best describes the appearance of most metals compared to nonmetals?
Transparent
Shiny with metallic luster
Always liquid at room temperature
Opaque with no luster
Which of the following is the correct arrangement of the hardness of sodium 11Na, magnesium 12Mg, and aluminum 13Al?
Na > Mg > Al
Al > Na > Mg
Al > Mg > Na
Mg > Na > Al
What is a characteristic feature of bronze compared to pure copper?
Bronze has a lower melting point than copper
Bronze is softer than copper
Bronze rusts more easily than copper
Bronze is harder than copper and does not rust.
Among the following, which is not a characteristic feature of metals?
Ability to form alloys
High electrical resistance
Nonmetals are usually brittle and lack the malleability and ductility of metals
True
Flase
How does the number of valence electrons affect the hardness of metals?
Hardness is only affected by atomic mass.
Hardness decreases with an increase in valence electrons.
The number of valence electrons has no effect on hardness.
Hardness increases with an increase in valence electrons.
Which property is characteristic of metals that helps in their usage in wiring and cookware?
Brittleness
Insulation properties
Thermal conductivity
What is an alloy?
A pure metallic element
A compound of a metal and a nonmetal
A synthetic metal
A mixture of two or more metals or metals with nonmetals, which does not have a molecular formula
What is the process of converting waste materials into new usable substances known as?
Digestion
Recycling
Composting
Reprocessing
Which of the following metals is known for its metallic luster and ductility?
Graphite
Carbon
Sulfur
Sodium
Which of the following is a reason for recycling metals rather than extracting them from ores?
Extracted metals are purer
Metals are unlimited in ores
Recycling requires more energy
It is difficult and costly to extract them from their ores
Why are metals like copper, aluminum, and iron commonly recycled?
It is easy to extract them from their ores
They are abundant in the earth’s crust
Their percentage in the earth’s crust decreases, and recycling is cheaper than extracting from ores
Recycling is often more expensive than extraction
What property of metals allows them to be drawn into wires?
Poor thermal conductivity
Opacity
Metals are typically malleable, meaning they can be hammered or rolled into thin sheets without breaking
False
What is responsible for the high melting points and hardness of metals?
Covalent bonds
Metallic bonds
Ionic bonds
Hydrogen bonds
In the structure of a metallic crystal lattice, what role do the valence electrons play?
They move freely within the lattice.
They are tightly bound to individual atoms.
They are completely absent.
They form covalent bonds between metal ions
In metallic bonds, the metal atoms are:
Charged as cations.
Charged as anions.
Not present as individual entities
Neutral.
Element (X) its boiling point is 2807°C and its melting point is 1064°C. Which of the following is a property of element (X)?
Opaque
Bad electrical conductor
Ductile
Brittle
Which metals primarily compose bronze, an alloy used in jewelry and statues?
Copper and silver
Copper and nickel
Copper (95%) and tin (5%)
Copper and zinc
Why are pure metals often combined to form alloys for industrial use?
Pure metals are non-conductive
Pure metals are too hard
Pure metals are soft and unsuitable for most industrial applications.
Pure metals are too expensive.
Which of the following is an exception among nonmetals due to its use in dry cells and ability to conduct electricity?
Copper
Carbon in the form of graphite