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WorksheetsStates of Matter, Acids , bases and Salts
Total questions: 57
Worksheet time: 42mins
What term describes a gas changing to a solid?
Deposition
Sublimation
Evaporation
Freezing
Which of the following solids has particles that are arranged in a random manner?
Amorphous solid
Crystalline solid
Which of the following is an example of a crystalline solid?
Salt NaCl
Rubber
Plastic
Polymer
Diamond cannot conduct electricity because
diamond has the structure of a giant covalent molecule
its carbon atoms form single covalent bonds
all of its valence electrons are used in forming covalent bonds
it has a higher melting point
The following statement are true about graphite except
it exists as a giant covalent molecule
carbon atoms are arranged in hexagonal ring form
the layers in graphite are held together by van der Waals forces
it has a very low melting point
Which of the following options explains why solids are incompressible?
They have strong interparticle forces
The particles are too large to compress
The particles are closely packed in fixed position
The particles are randomly arranged with a lot of space between them
What is it called when a solid turns directly into a gas?
Sublimation
Condensation
Liquid
Which type of solid has mobile electrons in the crystal (sea of electrons)?
Ionic
Molecular
Metallic
Covalent Network
Which is an example of an ionic crystal?
Quartz
NaCl
Ammonia
Iron
Which of the following is a network solid or covalent crystalline solid?
Diamond (C)
H2O (Ice)
Calcium Fluoride (CaF2)
Iron Metal (Fe)
Which type of crystalline solid is known for its conductivity in both solid and molten states?
Ionic Solid
Metallic Solid
Covalent Solid
Molecular Solid
Which of the following is a network solid?
SO2(Solid)
I2(Solid)
Diamond
H2O(Ice)
What do you mean by PROPERTIES of LIQUIDS?
The attraction between water molecules at the surface of water
The process in which a substance changes from its liquid to gas
The measure of a fluid’s resistance to flow
The ability of a substance to dissolve in a given amount of solvent at a specified temperature
What do you mean by VAPORIZATION?
The attraction between water molecules at the surface of water
The process in which a substance changes from its liquid to gas
The ability of a substance to dissolve in a given amount of solvent at a specified temperature
The measure of a fluid’s resistance to flow
Which will exert a higher vapor pressure? Why?
Acetone - because it has a lower molar heat of vaporization
Water - because it has a higher boiling point
Acetone - because it has a higher molar heat of vaporization
Water - because it has a lower boiling point
What are the factors affecting the rate of vaporization?
Viscosity and boiling point
Surface tension and molar heat of vaporization
Pressure and solubility
Temperature and intermolecular forces
What are the factors affecting the rate of vaporization?
Viscosity and boiling point
Surface tension and molar heat of vaporization
Pressure and solubility
Temperature and intermolecular forces
What is the measure of how much energy it takes to make a liquid boil and turn into a gas?
Vapor pressure
Viscosity
Molar heat of vaporization
Surface tension
What is the temperature at which a liquid turns into a gas?
Boiling point
Surface tension
Molar heat of vaporization
Viscosity
What is the measure of a fluid’s resistance to flow?
Surface tension
Molar heat of vaporization
Viscosity
Vapor pressure
What is the ability of a substance to dissolve in a given amount of solvent at a specified temperature?
Miscibility
Vaporization
Boiling point
Solubility
What is the attraction between like molecules?
Viscosity
Adhesion
Cohesion
Surface tension
Kinetic-Molecular Theory States that gases consist of:
small particles
large particles
stationary volumes
moving spaces
Gas particles are separated by:
air
other elements
heat
empty space
Gas particles are in constant ________________ ?
mass variation
random motion
orbit
diffusion
Identify the state of matter that is the most compressible.
Gas
Liquid
Solid
All are compessible
Identify the characteristics of a gas.
indefinite shape, but definite volume
indefinite shape and volume
definite shape and volume
all of the above.
A paper clip floating on the top of water is an example of..
viscosity
hydrogen bonding
surface tension
dipole- dipole forces
Which of the following statements is true?
Vapor pressure increases with temperature.
Inter molecular forces hold the atoms in molecules together.
Hydrogen bonds are stronger than covalent bonds
Dispersion forces are generally stronger than dipole-dipole forces.
Which compound represents an acid?
NaOH
HCl
CH2OH
NaCl
According to the alternate acid base theory, a compound is a base if it
donates a hydrogen ion
accepts a hydrogen ion
donates a hydroxide ion
accepts a hydroxide ion
Which of the compounds below is an electrolyte?
LiCl
CH4
CH3OH
Na
A sour taste is a characteristic of:
acids
bases
neutral
pH scale
Which is a characteristic of a base?
tastes sour
found mostly in foods
feels slippery
turn litmus paper red
pH is the measure of the concentration of ______.
Acids
H+ ion
OH- ion
Bases
What is being donated/accepted between conjugate acid-base pairs?
a hydrogen (H+) ion
a hydroxide (OH-) ion
water
a neutron
Which of the following is a strong acid?
oxalic acid
nitric acid
carbonic acid
acetic acid
Which of the following statements best define the term ‘salt’?
Salt is formed when metal reacts with an alkali.
Salt contains sodium ions and chloride ions.
Salt is formed from a weak Van der Waals’ forces of attraction.
Salt is formed when the hydrogen ions in an acid is replaced by metal or ammonium ions.
Which of the following reaction can produce sodium nitrate and water?
Sodium chloride solution and nitric acid.
Sodium sulphate solution and nitric acid.
Sodium hydroxide solution and nitric acid.
Sodium and dilute nitric acid.
Which of the following salts can be prepared by using double decomposition method?
Silver chloride
Barium nitrate
Sodium carbonate
Lead (II) nitrate
Sodium carbonate solution is added into copper (II) nitrate solution in an experiment. What is the colour of the precipitate obtained?
Green
Yellow
White
Brown
A few drops of sodium hydroxide, NaOH solution, is added to an aqueous solution. A green precipitate is formed. Which of the following may be present in the solution?
Cu2+
Fe2+
Fe3+
NH4+
A substance, P, dissolves in dilute hydrochloric acid to produce a gas which turn lime water milky. When aqueous sodium hydroxide is added, a brown precipitate is formed. What is probably P?
Iron (III) carbonate
Zinc carbonate
Magnesium carbonate
Lead (II) carbonate
Which of the following is white solid and dissolves in water?
Sodium carbonate
Barium sulphate
Calcium chloride
Magnesium carbonate
Which of the following salts dissolves only when hot?
NaCl
KCl
CaSO4
PbCl2
Which of the following is not a type of salt?
Normal salts
Acid salts
Double salts
Soluble salt
State a reason why filtration is carried out during the preparation of Copper (II) sulphate when copper (II) oxide is added to dilute Sulphuric (VI)?
To dry Copper (II) Sulphate
To remove water
To remove unreacted Copper (II) oxide
To speed up the rate of reaction
