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Worksheets2nd QUARTER EXAM in SCI 9
Total questions: 25
Worksheet time: 20mins
Which of the following molecules will not allow us to live without it?
H2
O2
Cl2
N2
Which of the following pairs of elements could possibly become an ionic compound? Refer to your periodic table.
Al and Al
Al and O
Fe and Fe
C and O
The electron found in the outermost energy level is called the ________.
Charges
Electron Configuration
Valence electrons
Period
It is used to describe the distribution of the electrons in an atom.
Period
Valence electrons
Quantum numbers
Group
The summary of the distribution of the electrons in the various atomic orbitals.
Valence electron
Electron configuration
Outermost energy level
Charges
A stable elements should be a total of _______ electrons.
Five
Six
Seven
Eight
The horizontal rows in the periodic table of elements are known as _______.
Group
Period
Family
Metals
An electrostatic force that holds the cations and anions. It is simply the giving up of electrons.
Bonding of electrons
Covalent bonding
Ionic bonding
Nonbonding
A positive ion formed when an atom or group of atom has lost one or more electrons.
Anion
lone pair
Ionic bond
Cation
A bond that is formed by the sharing of one or more electron pair between atoms.
Anion
Cation
Covalent bond
Ionic bond
It is the representation of an element using the symbol of the elements and the valence electrons as dots.
Octave
Lewis dot symbol
Covalent bond
Elements
Each dash in a bond represent how many electrons?
1
2
3
4
Ions that contain more than one element.
Oxidation
Binary
Polyatomic
Oxyanion
A type of compound composed only of two elements.
Binary compound
Ternary compound
Oxyacids
Non-oxyacid
Acid which contains oxygen is called_______.
Oxyacid
Nonoxyacid
Ternary acid
Gaseous acid
Which of the following is an acid?
NaOH
MgCl
HSO4
MgN
A bond that holds chemical together.
Ionic bond
Covalent bond
Chemical formula
Chemical bonding
He studied and proved that there are negatively charged particles in an atom.
(a)
He is an English chemist and physicist who introduced the atomic theory in science.
(a)
A systematic arrangement of the elements in increasing atomic numbers.
(a)
A short-hand representation of a compound composed of the symbols of the element and their corresponding oxidation states as subscript.
(a)
This number has a value of 6.02 x 10 23.
(a)
The mass percent of each element present in a compound.
(a)
A simple rule in writing the correct formula of the compound.
(a)
He is known for discovering the positively charged particles in an atom.
(a)
