WorksheetsChemistry Form 5 - 1
Total questions: 60
Worksheet time: 1hrs 8mins
Which of the following elements forms an ion with a charge of +1?
iron
potassium
calcium
iodine
Which of the following is NOT a feature that supports the particulate theory of matter?
There are empty spaces between the particles
The particles are in constant motion
There are no forces of attraction between the particles
Temperature has an effect on the speed of motion of the particles
Diamond and graphite are allotropes of carbon because:
Their atoms contain different numbers of neutrons
They have the same physical properties but different chemical properties
They exist in different physical states
In the same state, they have distinct physical structures
The chemical properties of calcium are MOST similar to those of
Aluminum
Sodium
Potassium
Strontium
The electronic configuration of an atom of fluorine is:
2,7
2,8
2,8,1
2,8,8,1
A mixture of ethanol and water can be separated based on their different
Boiling points
Melting points
Densities
Solubilities
Which of the following substances sublime when heated?
I- Carbon monoxide
II - Carbon dioxide
III - Naphtalene
I and II only
I and III only
II and III only
I, II and III
A strip of paw-paw is placed in a beaker of water. After 30 minutes it was found that the strip had
Increase in length and become rigid
Increase in length and become soft
Decrease in length and become rigid
Decrease in length and become soft
The solubility of a solid in water usually:
Increases as temperature increases
Increases as temperature decreases
Remains constant as temperature increases
Decreases as temperature increases
Avogadro’s law states:
Equal volumes of gases under the same conditions of temperature and pressure combine together
Equal volumes of all gases under the same conditions of temperature and pressure contain the same number of
atoms
The volume of a given mass of a gas is inversely proportional to pressure, temperature being constant
Equal volumes of all gases under the same conditions of temperature and pressure contain the same number of molecules
All Bromides, Chlorides and Iodides are soluble EXCEPT those of:
I. Pb
II. Pa
III. Ag
IV. Au
II and III
I and III
II and IV
I and IV
A standard solution:
I. is saturated
II. is made in a volumetric flask
III. has a known concentration
I only
I and II only
II and III only
I, II and III
An alloy can be classified as:
a solution
a suspension
a colloid
a pure substance
The Law of Conservation of Matter states that during a chemical reaction:
Matter can be both created and destroyed
Matter can be created but not destroyed
Matter can be destroyed but not created
Matter cannot be created or destroyed
The presence of a small amount of sodium chloride in water is most likely to
Increase the water’s boiling point and decrease the water’s melting point
Increase the water’s boiling point and increase the water’s freezing point
Decrease the water’s boiling point and decrease the water’s melting point
Have no effect on the water’s boiling point and decrease the water’s freezing point
The volume occupied by 0.25mol of Sulphur dioxide at rtp is
60cm3
600cm3
0.60dm3
6.0dm3
Particle Q has 16 protons, 17 neutrons and 18 electrons. Particle Q is:
An atom of a metal
An atom of a noble gas
An anion
A cation
Which element has the GREATEST strength of oxidizing power?
Fluorine
Chlorine
Bromine
Iodine
Which of the following metals is a transition element?
Sodium
Magnesium
Copper
Beryllium
A metallic element, M, and a non-metallic element, X, form an ionic compound with the formula M2X3. What are the charges on the ions formed by M and X?
Charge on ion M:2+
Charge on ion X: 2-
Charge on ion M:2+
Charge on ion X: 3-
Charge on ion M:3+
Charge on ion X: 2-
Charge on ion M:3+
Charge on ion X: 3-
The following lists consists of ionic compounds EXCEPT
Barium hydroxide, zinc carbonate, ammonium sulfate
Calcium chloride, carbon disulfide, magnesium nitrate
Sodium sulfate, copper (II) oxide, potassium nitride
Aluminum sulfide, sodium sulfite, calcium fluoride
The table is giving the melting and boiling points of four substances.
Which substance will be a gas at room temperature?
I
II
III
IV
The table is giving the melting and boiling points of four substances.
Which substance will be composed of slow-moving particles at room temperature?
I
II
III
IV
Which of the following techniques could be used to separate a mixture of inks?
Centrifugation
Chromatography
Filtration
Fractional distillation
The atoms of element X contain five electrons. Which of the following elements is in the same group as element X?
Aluminum
Lithium
Oxygen
Sulfur
The atomic number of element X is 20. The most common charge of element X is likely to be:
-2
-1
+1
+2
How many of the Group VII elements are liquid at room temperature and atmospheric pressure?
1
2
3
4
The relative formula mass of an atom is its mass compared to the mass of:
Carbon-12
Hydrogen-1
Oxygen-16
Chlorine-35
Simple molecular solids usually have low melting points because
The intermolecular forces between the atoms are weak
The covalent bonds between the atoms are weak
The intermolecular forces between the molecules are weak
The forces between delocalized electrons and the molecules are weak
When sodium chloride dissolves in water, the solution conducts electricity because
Electrons become delocalized and free to move
Na+ and Cl- ions become free to move
Polar water molecules move and carry electricity
Protons come free to move
A covalent compound is formed by
Metal atoms losing valence electrons to non-metals atoms
Non-metals atoms losing valence electrons to metal atoms
Metal atoms sharing valence electrons
Non-metal atoms sharing valence electrons
In a gas, the particles
Have small spaces between them
Possess very little Kinetic Energy
Vibrate in fixed positions
Are attracted to each other by weak forces
What are the correct coefficients needed to balance the following equation?
Al (s) + O2 (g) Al2O3 (s)
4,3,2
2,3,4
2,3,2
4,2,3
The ionic equation between zinc and sulfuric acid can BEST be represented by
Zn (s) + 2H+ (aq) Zn2+ (aq) + H2 (g)
Zn (s) + H2SO4 (aq) ZnSO4 (aq) + H2 (g)
Zn (s) + H2SO4 (aq) Zn2+ + SO42- (aq) + H2 (g)
Zn (s) + 2H+ (aq) + SO42- (aq) Zn
2+ (aq) + SO42- (aq) + H2 (g)
The mass concentration of solution of magnesium chloride containing 0.1 mol magnesium chloride in 250cm3 of solution is
([Mg-24, Cl-35.5])
2.375 gdm-3
9.5 gdm-3
19.0 gdm-3
38 gdm-3
All the following are examples of Suspensions EXCEPT:
Dust in air
Powdered chalk in water
Mud in water
Carbon dioxide in water
The lubricating properties of graphite can BEST be explained by the weak bonds
Between the layers of carbon atoms
Created by delocalized electrons
Between ions in the structure
Between carbon atoms within the layers
What mass of sodium hydroxide is required to make 200 cm3 of sodium hydroxide solution of concentration 0.4moldm-3?
[Na-23, O-16, H-1]
0.4g
3.2g
8.0g
16.0g
The following apparatus was set up to separate sand from sea water.
Which of the following correctly identifies Q and R?
Q: residue
R: filtrate
Q: residue
R: distillate
Q: filtrate
R: residue
Q: distillate
R: residue
Elements in group II of the periodic table are known as:
Noble gases
Alkali metals
Alkaline metals
Alkaline earth metals
Calculate the number of atoms in 0.5 mol of Copper, Cu
3 x 1023 atoms
3.9 x 1025 atoms
0.3 x 1023 atoms
6 x 1023 atoms
Which of the following correctly summarizes the relative charges on the three subatomic particles?
Proton: +1
Neutron: -1
Electron: 0
Proton: -1
Neutron: -1
Electron: +1
Proton: -1
Neutron: +1
Electron: 0
Proton: +1
Neutron: 0
Electron: -1
Evaporation ONLY occurs:
During boiling
At a specific Temperature
When heat is applied to a liquid
At the surface of a liquid
How many moles are there in 31.8g of Sodium Carbonate
[Na-23, C-12, O-16]
0.03mol
0.3mol
0.333mol
3.333mol
The following equation summarizes the reaction occurring when Coper(II) Nitrate solution is added to Sodium Hydroxide solution
Cu(NO3)2(aq) + 2NaOH(aq) --> Cu(OH)2(s) + 2NaNO3 (aq)
The correct ionic equation for the reaction is:
2NO3- (aq) + 2Na+ (aq) --> 2NaNO3 (aq)
Cu2+ (aq) + 2OH- (aq) --> Cu(OH)2 (s)
Cu(NO3)2 (aq) + 2OH- (aq) --> Cu(OH)2 (s) + 2NO3- (aq)
Cu2+ (aq) + 2NaOH (aq) --> Cu(OH)2 (s) + 2Na+ (aq)
Which of the following pieces of apparatus is used to measure a volume
of liquid accurately?
Conical flask
Fractioning column
Pipette
Separating funnel
What type of reaction would you consider the following to be?
2Al (s) + 3H2SO4 (aq) --> Al2(SO4)3(aq) + 3H2 (g)
A neutralization reaction
A single displacement reaction
A double displacement reaction
A synthesis reaction
Which of the following statements about a dilute solution is TRUE?
A dilute solution contains a small amount of solute in a small volume of solvent
A dilute solution contains a large amount of solute in a large volume of solvent
A dilute solution contains a small amount of solute in a large volume of solvent
A dilute solution contains a large amount of solute in a small volume of solvent
Which solid is an ionic macromolecule?
Diamond
Metallic Zinc
Potassium bromide
Silicon dioxide
Which solid is an allotrope of carbon?
Diamond
Metallic Zinc
Potassium bromide
Silicon dioxide
Two atoms with atomic numbers 12 and 17 would
Bond to form an ionic compound
Bond to form a covalent compound
Bond to form a metallic lattice
Not bond with each other
Positive cations in a sea of delocalized electrons are found in
Ionic compounds
Covalent compounds
Aqueous solutions of ionic compounds
Metals
Ionic bonding occurs between
Two metals
A metal and non-metal
A semi-metal and non-metal
Two non-metals
A gas jar that has a volume of 336cm3 is full of oxygen at stp. What mass of oxygen does it contain?
480g
240g
0.48g
0.24g
The following statements are correct EXCEPT
An atom is the smallest unit of an element that can exist by itself
Electrons orbiting around the nucleus of an atom make up most of the mass of the atom
An atom has no overall charge
Electrons orbiting the nucleus of an atom do so in energy shells
The mass number of an element whose atoms contains 15 protons, 16 neutrons and 15 electrons is
32
31
16
30
Isotopes have the same
Physical properties
Chemical properties
Number of neutrons
Mass number
Elements in Group 0 of the periodic table
Have 8 electrons in their valence electron shell
Are very reactive
Have full valence electron shells
Are solids at room temperature
An element with an atomic number of 7 would be expected to
Be in Period 1 of the periodic table
Be a non-metal
Be in Group VII of the periodic table
Have a stable electronic configuration
Element R is in Group IV and Period 5 of the periodic table. An atom of R would be expected to have
5 occupied electron shells and 4 valence electrons
4 occupied electron shells and 5 valence electrons
5 occupied electron shells and 6 valence electrons
6 occupied electron shells and 5 valence electrons
