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WorksheetsCompounds and Mixtures QUIZ 1
Total questions: 20
Worksheet time: 22mins
What is formed when an insoluble solid compound is produced in a chemical reaction?
gas
halogen
precipitate
water
Which type of bond is made when two atoms share two pairs of electrons?
ionic bond
triple covalent bond
single covalent bond
double covalent bond
Why are metals generally ductile, or able to be
pulled into wires?
Metal ions form strong, rigid three-dimensional networks.
Ions within the metal structure easily slide.
past one another.
The bonds between metal atoms are very
strong and they stick tightly together.
Valence electrons can flow freely through the
material when there is an electric potential.
Why do metals and nonmetals tend to form ionic bonds?
Metals have low electronegativities, so they transfer electrons easily to nonmetals, forming ionic bonds.
Nonmetals have lower electronegativities than most metals, so they bond tightly together, creating ionic bonds.
Metals and nonmetals have similar electronegativities and masses, so they share electrons when creating ionic bonds.
Nonmetals and metals that are bonded have atomic masses so different that it causes them to form ionic bonds more easily.
Which statement describes how pressure affects the solubility of gases in liquids?
It is unaffected by pressure.
It increases with increasing pressure.
It decreases with increasing pressure.
It increases with decreasing pressure.
Which material has properties of both a conductor and an insulator?
ceramics
metals
polymers
semiconductors
Why do atoms form bonds?
to become less stable
to create a lower potential energy
to create a higher potential energy
to move farther away from each other
Engineers must optimize each stage of the life cycle of an engineered material to reduce the impact of the material on society and the environment. Which action would make the distribution stage more efficient?
develop systems and processes to improve shipping and packing
develop eco-friendly fossil fuel extraction methods
design a recyclable material for the product
reduce reliance on electricity for appliances
Which property must be known about each atom in order to draw an electron-dot structure?
bond length
atomic mass
ionization energy
number of valence electrons
Which of these compounds would likely conduct an electrical current if dissolved in water?
Dioxygen, O2
Gallium(III) nitrite, Ga(NO2)3
Carbon tetrabromide, CBr4
Dinitrogen tetroxide, N2O4
Which statement describes an advantage of using alloy instead of traditionally produced materials for prosthetics?
Alloys use one solid material, which makes them easier to produce.
Alloys are denser and heavier, making them more durable and therefore a better choice.
Alloys are stronger and more durable yet lighter because properties of multiple materials are used.
Alloys structures are easier to manufacture because many materials are chemically combined into a type of alloy.
Which molecule is most likely to form hydrogen bonds? Refer to the periodic table.
H2
H2O
CH4
C6H6
Which statement describes the formation of solutions?
Solutes are always solids.
Water is always the solvent.
The solute dissolves in the solvent.
The solvent dissolves in the solute.
Which statement describes the relationship between intermolecular forces in liquids and their viscosity?
Lowering the temperature weakens intermolecular forces, which causes the viscosity to decrease.
Raising the temperature strengthens intermolecular forces, which causes the viscosity to increase.
Weak intermolecular forces allow molecules to slide past each other, which increases the viscosity.
Increased molecular weight causes strong intermolecular forces, which increase the viscosity of a liquid.
Which statement explains covalent bonding between two atoms in a molecule?
Electrons are shared between the atoms.
The atoms are drawn together by their opposite charges.
Loosely held electrons are able to move about within a crystal lattice.
One atom loses at least one electron, and the other gains at least one electron.
Which type of covalent bond is the strongest?
double bond
triple bond
one in which two electrons are shared
one in which four electrons are shared
Which type of structure do most ionic compounds form?
molecule
crystal lattice
polyatomic ion
electron-dot structure
Explain why a salt does not consist of molecules.
Compare and contrast ionic and covalent bond?
Locate lithium, bromine, and oxygen on the periodic table.
Identify the two pairs of elements that will combine to form ionic compounds. Name each compound and its chemical formula.
