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WorksheetsPERIODICAL TEST IN SCIENCE
Total questions: 35
Worksheet time: 18mins
What is the group no, period no, and valence electron of the element with a valence configuration of 4s^2 3d^10 4p1
G 4, P 1, VE 1
G4, P4, VE4
G3, P4, VE1
G3, P4, VE3
Among the sets of quantum numbers below, which shows the not allowed arrangement?
n = 1, I = 0 mI = 0 ms = 1/2
n = 2 I = 1 , mI = 1 ms = - 1
n = 2 l = 2 m1 = -1, ms = - 1/2
n = 3 I = 2 m1 = -3, ms = 1/2
The correct set of quantum numbers in the 3d sublevel.
n = 2 l = 2 ml = -2, -1, 0, +1, +2, ms = - 1/2 or +1/2
n = 3 I = 1 ml = -2, -1, 0, +1, +2, ms = - 1/2 or +1/2
I = 3 i = 2 ml = -1, 0, +1, +2, ms = - 1/2 or +1/2
n = 3 12, ml = - 2 -1, 0, +1, +2, ms = - 1/2 or +1/2
Which shows a correct description of ionic compounds and covalent compounds?
Buth ionic compounds and covalent compounds have low melting point.
Both ionic compounds and covalent compounds have a high melting point.
ionic compounds have high melting points, covalent compounds have low melting points.
lonic compounds have low melting points, covalent compounds have high melting points.
What is the difference between a cation and an anion?
An anion has ____ one or more electrons, acquiring a ____ charge while a cation has ____ one or more electrons, having a ____
hlost, negative: gained, positive
hgained, positive lost, positive
hgained, negative, lost, positive.
hgained, positive: lost, negative
hlons are formed when atoms lost or gained electrons in order to fulfill the OCTET RULE and have full outer valence electron shells, to achieve stability. Which of the following statements accurately distinguishes positive ions from negative ions according to their tendency to gain or lose electrons?
hBoth positive ion and negative ions lose electrons to comply with Octet rule.
hBoth positive and negative ions gain electrons to comply with the Octet rule.
hPositive ions lose electrons to comply with the Octet rule, positive ions gain electron to comply with Octet rule.
hPositive ions lose electrons to comply with the Octet rule, negative ions gain electrons to comply with Octet rule.
hEvaluate which of the given statements below best describe the unique characteristics of carbon as an element?
I. Carbon atoms' four valence electrons can be shared by different particles that have electrons to share, consequently framing covalent (shared electron) bonds.
II. Carbon atom has the ability to form long carbon-to-carbon chains. III. The carbon-carbon single bond is a sigma bond and is formed between one hybridized orbital from each of the carbon atoms.
IV. It can impart not just one electron to another atom to form a single bond, it can likewise share two or three electrons, framing a double or triple bond.
I and IV
II and III
I and II
I, II, III, and IV
How can we differentiate inorganic compounds from organic compounds? Which statement is incorrect?
hOrganic compounds contain carbon-hydrogen bonds and inorganic compounds do not.
hOrganic compounds are beneficial to the environment and inorganic compounds are not.
hOrganic compounds are produced naturally, and inorganic compounds are human made
hOrganic compounds contain ionic bonds, and inorganic compounds contain covalent bonds
Which shows a CORRECT pair of empirical and molecular formula
NO2 N2O4
P2O5
CHO ; C2H4O6
C3H6 ; C6H12O6
How do molecular unit and formula unit differ?
I. A molecular unit is composed of two or more elements that are covalently bonded.
II. A formula unit indicates the lowest whole number ratio of ions in an ionic compound.
III. Molecular unit is for ionic compounds while formula unit is for covalent compounds.
I
II
I, II
I, II, and III
The pain reliever mefenamic acid contains an active ingredient called Ibuprofen C13H18O2. What is the molecular mass for this compound?
• 200.1 g/mol
• 222.3 g/mol
•206.3 g/mol
• 240.54 g/mol
Which is CORRECT about the mole? A mole is
I. known as Avogadro's number.
II. a counting unit equal to 6.02 x 1023 atoms.
III. numerically equal to the atomic mass of the element.
I
II
II and III
I, II, and III
Which represents a mole?
6 g of NaCl
3.01 x 1023 CH4 molecules
6.02 x 1023
6.02 x 1024
Which shows the formation of ions using the Lewis Electron Dot Symbol (LEDS)?
I only
I and II
I, II, AND III
II, III, and IV
Following the crisscross method, which is the correct chemical formula of ionic compounds Iron (III) chloride?
FeCl
FeCl3
Fe3Cl
Fe3Cl3
Ethan is an 8-years old boy whose father works in a funeral as an embalmer. One day, he saw a bottle of formalin and asked his dad what is its use. What do you think Ethan's father answered?
• It is used as antioxidant and source of vitamin
• It will be used as an insecticide and pest repellent
• It is used as a preservative in food, paints and cosmetics.
• It is used as a disinfectant in industries and embalming chemical in funeral homes.
In the given materials below, which of them contain a carbon atom?
I. Agua Oxinada
II. Water III. Ammonia
IV. Isopropyl Alcohol
I & II only
III & IV only
IV only
I, II, III, IV
Analogy: High melting point is to ___ compoundwhile low boiling point is to ___ compound
ionic ; covalent
ionic ; metallic
covalent ; ionic
covalent ; metallic
Which compound is ionic based on their chemical name?
Carbon Disulfide
Sodium Sulfate
Chlorine Trifluoride
Sulfur Dioxide
At a maximum, an f-orbital can hold ___ electrons, a d-orbital can hold ___ electrons and a p-orbital can hold ___ electrons.
14, 10, 6
14, 8, 2
2, 8, 18
2, 12, 21
What is the group and period of an element with an electronic configuration 1s2, 2s2, 2p6?
Group 2 Period 3
Group 8 Period 2
Group 4 Period 2
Group 8 Period 4
Which compound is covalent based on their chemical formula?
Na2O
CaF2
Ba(OH)2
PCI3
Given the illustration below, what atomic model tells the probability that electrons will be found in certain locations around the nucleus of an atom?
A
B
C
D
Heisenberg's Uncertainty Principle helps us describe the probable location of an electron. What is implied by this principle?
Electron are inside the nucleus
Electrons can be found in orbits around the nucleus.
Electrons have definite locations outside the nucleus.
Electrons' location cannot exactly be pointed out; however, the probability of finding it in orbitals is possible.
Among the following, which atom is most likely to form an ion with a charge of 2+
O
Na
Al
Ca
Which is equivalent to one mole of Ca(NO3)2?
40 g Ca(NO3)2; 6.02 x 1023 particles
164 g Ca(NO3)2; 12.04 x 1023 particles
328 g Ca(NO3)2; 6.02 x 1023 particles
164 g Ca(NO3)2; 6.02 x 1023 particles
4
Joy and her friends are planning to hike. One of her friends asked her what are the things they need to bring. Joy said they need to bring candies, food and butane. One of her friends is wondering why they need to bring
butane. What do you think is Joy's answer?
It will be used as fuel for vehicles.
-It will be used as fuel in portable gas stoves.
It will be used as an antiseptic and disinfectant.
It will be used as an insecticide and pest repellent.
Gina wants to determine in the given samples which will be easily burned out. Which of the organic compounds will catch fire easily if she tests its flammability?
kerosene
diesel oil
ethly alcohol
lubricating oil
The state that the ground state configuration of an atom is generated by filling in levels from the lowest (energy-wise) to the highest with electrons observing the maximum for each of these levels is
The Aufbau Principle
Heisenberg's Uncertainty Principle
Hund's Rule
Pauli's Exclusion Principle
Which is the correct configuration of P15 using Hund's Rule.
1s2 2s2 2px² 2py2 2pz23s2 3px² 3py¹ 3pz
1s2 2s2 2px² 2py2 2pz² 3s2 3px¹ 3py¹ 3pz'
1s2 2s2 2px² 2py2 2pz2 3s2 3px¹ 3py! 3pz 4s¹
192 2s2 2px2 2py2 2pz2 3s2 3px¹ 3py 3pz 4s¹
To what group number does Magnesium belong to?
Group 1
Group 2
Group 3
Group 4
Which given pair of chemical formulas and names is CORRECT?
Fe2O3: Iron (II) oxide
BaOH: Barium hydroxide
Na2CO3: Sodium carbonate
S2Cl2: Disulfur dichloride
Why do ice cream vendors used crushed ice sprinkled with salt around the metal canister that contain ice cream? Because salt
lowers the boiling point of the ice cream
lowers the melting point of the ice cream
adds a bit of salty flavor to the ice cream
increases the melting point of the ice cream
Examine the electron dot diagrams for lithium, carbon, fluorine, and neon. Select the statement that correctly identifies the most stable elements.
Lithium is the most stable element because it must lose only one electron to achieve a stable configuration
Carbon is the most stable element because it can form four bonds to achieve a stable configuration
Fluorine is the most stable element because it must gain only one electron
Neon is the most stable element because its highest oxide energy level is filled
What is the correct formula of ionic compound Lead (IV) using the crisscross method?
Pb2O4
PbO2
Pb4O2
Pb2O
