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Q2-SCIENCE9-PRE-TEST-2021-2022
Quiz by Merced Ansay
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
The spin quantum number of an electron can be thought of as describing _______
How many electrons from the outermost shell does a 4s orbital possess?
Which set of quantum numbers uniquely defines one of the electrons in an atomic orbital with n = 2 and l = 0?
What is the electron configuration for nitrogen, atomic number 7?
Which of these d-orbitals contains both paired and unpaired electrons?
How many valence electrons does Boron have?
Covalent and ionic bonding produce certain types of compounds that have different properties. What is the general term used for all the compounds with covalent bond?
Non-polar covalent bonding involves the equal sharing of electrons between atoms to attain stability. Which of the following compounds will have non-polar covalent bonding?
Electrical and thermal conductivity is one of the properties of compounds. Which of the following types of bonds will have a high electrical conductivity?
The following compounds are commonly found in nature or in our household. Which do you think will have the highest melting/boiling point if we are to subject those substances to heating?
What happens to the electron of a metal element in ionic bonding forming a compound?
Which best describes the position of the elements in the Periodic Table and its valence electrons?
Which best describes an anion?
How many electrons does Fluorine ion need for it to be stable?
What ion can be combined with oxygen ions to form an ionic compound?
Which of the following LED symbols best describe the anion present in the given statement?
Which of the following ions is classified as polyatomic cation?
As you pour the motor oil in the machine, you notice that the flow is somewhat thick and sticky as compared to water. What property best describes this scenario?
What atom is most likely to form as an inorganic compound when it is bonded with Carbon atom?
Which of the following compounds is classified as organic compounds?
Which of the following sets of Organic Compounds is viscous?
I. Ethyl Alcohol
II. Liquified Petroleum Gas
III. Honey
IV. Motor Oil
All of these are found in every household. Which of the following household products does not belong to the group?
Below are formulas of organic compounds, which of the following is/are condensed structural formula?
Refer to the structure on the right. Which group of hydrocarbons does the molecule belong to?
What is the correct molecular formula of a hydrocarbon having 7 atoms that contains a single bond?
Methane is also known as biogas. What is the use of this compound?
Two alkane compounds, butane and octane were placed in separate unlabeled containers. Several tests were conducted to describe properties of the compounds. What properties can you observe on the two compounds?
I. Butane is a gas while octane is a liquid.
II. Butane has a lower boiling point compared to octane.
III. Butane is insoluble in water while octane is soluble.
IV. Butane is flammable while octane is not flammable.
Ethyl alcohol is a colorless liquid which is an ingredient of liquors. Which of the following is the correct molecular formula of ethyl alcohol?
What is the difference between a molecular unit from a formula unit?
The following are examples of covalent compounds, which molecule is equivalent to 1 mole?
I. 18 g H2O II. 32 g O2 III. 80 g CO2 IV. 160 g SO2
In an experiment, a beaker contains 1.204 x 1024 formula units of sodium chloride (NaCl). How many moles are in this substance?
Sodium hydroxide (NaOH) or lye is a compound used for making soap. Sodium chloride (NaCl) is table salt. If you are going to compare 40 g NaOH with 40 g of NaCl, table salt contains...
Glucose (C6H12O6) is a substance that is found in the blood. This compound is a component of the intravenous solution. If a COVID-19 patient needs 1.5 moles of glucose, how many grams of this compound should be placed in the intravenous solution?
The world is experiencing a pandemic situation because of COVID-19. It is advised that one should boost his or her immune system. Taking ascorbic acid (C6H8O6) or commonly known as vitamin C daily will help you boost your immune system. This vitamin is usually given in a 500 mg (0.5 g) tablet. If you take one tablet per day for 15 days, how many molecules of ascorbic acid will you have?
Which of the following is the ratio of the atomic mass of an element in a compound and the total mass of all elements in the compound multiplied by one hundred?
Ferrous sulfate or iron (II) sulfate is a supplement prescribed to persons who has iron-deficiency anemia. It has a chemical formula of FeSO4. Determine the percentage of iron in this compound with a molar mass of 152 g/mol.
What is the percentage composition of water (H2O) with a molar mass of 18 g/mol?
In which way can you apply the knowledge on percentage composition?
I. in identifying the element present
II. in checking if the substance is pure
III. in knowing the value of the substance
IV. in knowing the amount of sodium in instant noodles
Calcium carbonate (CaCO3) is a substance naturally found in rock and mineral formations. It is widely used for making cement and tiles. What is the percentage of calcium in this compound?
Given below are formulas of covalent compounds, which of the following is an empirical formula?