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Second Quarter Summative Assessment in Science 9
Quiz by Rosalina T. Alonzo
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Which atomic model is proposed by Schrodinger?
The symbol “n” in the Bohr theory of atomic structure refers to the
Consider the following set of quantum numbers
n= 4 ℓ = 2 mℓ =+1 ms = - ½
The electron which has the given set of quantum numbers occupies sublevel
Referring to the same set of quantum numbers in number 3,
n= 4 ℓ = 2 mℓ =+1 ms = - ½
The orbital designation of the electron is
Referring to the same set of quantum numbers,
n= 4 ℓ = 2 mℓ =+1 ms = - ½
How many orbitals does this set of quantum numbers represent?
How many electrons are represented by this set of quantum numbers? n = 4 ℓ= 2 mℓ =+1 ms = - ½
Element X has this electron configuration: 1s2 2s2 2p6 3s2 3p4; to what group and period does this element belong?
An element belongs to group 7A and period 4 in the periodic table. Which of the following characteristics best describes this element?
Which pair of elements will form ionic bond?
Phosphorus belongs to group 5A while chlorine belongs to group 7A. What bond is formed when P and Cl combine?
Which of the following statements will NOT BE TRUE when sodium (atomic number11) atom loses one electron? Sodium atom will
When does covalent bonding take place?
Which of the following is the correct illustration of ionic bond formation?
Which among the following shows that an atom is stable?
Which of the following correctly represents the chemical formula formed between Calcium and fluorine?
What charge is formed by Calcium when it combines with fluorine?
What charge is formed by fluorine when it reacts with calcium?
What kind of chemical bond is formed from the combination of Ca and F?
Which of the following statements best describe organic compounds?
How do carbon atoms form many organic compounds?
What is the maximum number of bonds can a carbon atom form?
Which of the following is an organic compound?
What is the correct name of this hydrocarbon, C4H10?
Which organic compound is used as a cleaning agent?
Which of the following molecular formula has a molar mass of 180 g/mole? (Atomic Mass of C=12, H=1, O=16)
Water, H2O, has a molecular mass of 18 g/mole. How many moles are there in 36 g of water? (Atomic mass of H=1, O=16)
An Avogadro’s number of any element is equivalent to
What is the molar mass of NH3? (Atomic mass of N=14, H=1)
What is the percentage composition of nitrogen in NH3?
What is the percentage composition of hydrogen in NH3?