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WorksheetsGeneral Chemistry 2.1 (2021-2022)
Total questions: 20
Worksheet time: 13mins
Which sample has hydrogen bonding?
H2S
CH4
NH3
HI
Water has an unusually high boiling point for a molecular compound because it has
hydrogen bonding
ion-ion attractions
a high density
a large gram formula mass
Which substance has the weakest intermolecular forces?
Substance A, boiling point of 75 °C
Substance B, boiling point of 105 °C
Substance C, boiling point of 25 °C
Substance d, boiling point of 45 °C
Which substance would have the weakest intermolecular forces of attraction?
CH4
NaCl
H2O
MgF2
________________________ have the strongest intermolecular forces of attraction.
Dipole- Dipole
Dispersion
Hydrogen Bonds
Ion-Dipole
Hydrogen bonding occurs when hydrogen is bonded to N, O, or F. Which of the following has hydrogen bonding?
CBr4
NO2
H2S
NH3
Does H2O have hydrogen bonding?
Yes
No
This property of water allows it to be the universal solvent.
polar molecule
surface tension
solubility
density
H+ and O- show which property?
Hydrogen bonding
States of matter
Specific heat
Polar molecule
Approximately, what percentage of Earth does water cover?
30%
70%
92%
10%
What is capillary action?
When water sticks to water.
When water sticks to another polar substance.
When water evaporates.
When water molecules move up a root or vessel pulling other molecules with it.
Why is water a universal solvent?
It can dissolve more substances than any other liquid.
It can become less dense as it gets cooler.
It can bond with other molecules.
It has the same melting/freezing point.
If you saw a glass of water and later the water was gone what happened to the water? Remember that your in the science lab.
Mrs. Tabliago was very thirsty and drank the water.
evaporation
precipitation
solubility
This type of solid forms a regular repeating
three-dimensional structure called a crystal lattice. What type of solid is this?
amorphous
crystalline
glass
diamond
In amorphous solids, the atoms or molecules are held together in a completely random formation.
True
False
Which of the following is not true about crystalline solids?
Have a sharp melting point
Crystalline solids are anisotropic in nature
Cannot be cleaved along a definite plane
They are considered as true solids
Which of the following is true of solids?
All solids have a crystalline structure.
All solids maintain a defined shape and size if conditions remain constant.
All solids have a lattice structure at the atomic level.
Solids maintain a defined shape and size under all conditions.
One major difference between crystalline and amorphous solids is that
crystalline solids have a precise melting point.
amorphous solids have a lattice structure.
amorphous solids always behave consistently and uniformly.
crystalline solids break unpredictably and can produce curved fragments.
A friend in your chemistry class is struggling to understand why crystalline solids are grouped into four main types: network, molecular, ionic, and metallic. Which explanation below will BEST help him begin to understand why chemists might have these groups?
Crystalline solids all share a lattice structure, but have different densities. Chemists use the groups to organize the solids by density.
Crystalline solids all share a lattice structure and the same types of bonds, but are composed of different elements. These elements affect the way the solid conducts heat and electricity.
Crystalline solids all share a lattice structure, but behave differently under similar conditions.
Crystalline solids all share a lattice structure, but the bonds that hold them together at the atomic level differ. The elements that make up the solids also differ. These differences affect how a solid conducts heat and electricity.
Evaporation and boiling are two kinds of _______
condensation
vaporization
sublimation
melting
