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WorksheetsChemical Bonding
Total questions: 35
Worksheet time: 18mins
What type of bond is the joining of atoms to form new substances?
Metallic Bond
Chemical Bond
Covalent Bond
Ionic Bond
What is formed when electrons are shared, gained, or lost?
Overlapping atoms
Valence electrons
Energy levels
Chemical bonds
Neutrons in an atom are organized into energy levels.
False
True
The ______ ______ of an element is the number of electrons in that element.
energy levels
chemical bonds
atomic number
valence electrons
How many electrons can the first energy level hold?
3
2
8
None
How many electrons can the second energy level?
8
6
2
10
The electrons in an atom's outermost energy level, _______ _________, forms bonds between most atoms.
chemical bonds
proton and neutrons
valence electrons
atomic number
How many valence electrons does oxygen have?
(hint: oxygen's atomic number is 8)
6
1
8
2
Chlorine has 17 electrons. How many valence electrons does it have?
None
6
2
7
When an atom loses an electron it has what type of charge?
Negative
Positive
Neutral
None
When an atom gains an electron it has what type of charge?
Positive
Neutral
None
Negative
The electron number equals what else in the atom?
Neutron number
Valence electron number
Proton number
No relation
In ionic bonds, the number of electrons lost by _____ equals the number gained by the ________ atoms.
nonmetal; nonmetal
metal; metal
metal; nonmetal
positive; negative
Ions that bond have charges. The compound is _______ because the charges cancel each other out.
metallic
Negative
Positive
Neutral
Brittleness, high melting point, and high boiling point are properties of ionic compounds
True
False
When atoms share one or more pairs of electrons, what forms?
Metallic bond
Ionic bond
Crystal lattice
Covalent bond
A high melting point, a high boiling point, and brittleness only in the solid state are properties of covalent bonds.
True
False
Covalent bonds usually form between atoms of what?
metals and nonmetals
nonmetals and nonmetals
metals and metals
None of the above
What type of chemical bonds exists in water molecule?
Plain
Covalent bond
Metallic bond
Ionic bond
Diatomic molecules are molecules made up of two or more atoms of different elements.
True
False
When speaking about diatomic molecules, di- mean...
multiple
too
two
three
What type of atoms sharing with 4 electrons in the chemical reaction?
Hydrogen
Beryllium
Boron
Carbon
What type of bond is formed by the attraction between positively charged metal ions and the electrons?
Positive Bond
Ionic Bond
Covalent Bond
Metallic Bond
What happens to the outermost energy level when metal atoms bond and they're very close to each other?
They overlap
It allows the electrons to move around freely
They become positive
Both overlap and move around closely
Ductility is...
the ability to hammer into sheets
the ability to draw wires
Malleability is...
the ability to hammer into sheets
the ability to be drawn into wires
What describes a metal ability to be reshaped?
ductility and mirroring
malleability and bending
deductibility and bending
ductility and malleability
An atom that gains or loses an electron becomes
an isotope
a new element
an ion
a molecule
Sodium chloride is a .... compound
Ionic
Covalent
In carbon dioxide, carbon and oxygen are bonded by ... bonding
Ionic
Covalent
How does an O atom become an O2- ion?
loses 2 electrons
gains 2 electrons
Which of the following groups contains the most reactive elements?
the noble gases
the alkali metals
the alkaline earth metals
the carbon family
Because an atom is neutral, the number of
electrons equals the number of neutrons
isotopes equals the number of electrons
electrons equals the number of protons
protons equals the number of neutrons
In the periodic table, elements are arranged in order of
decreasing atomic number
increasing atomic number
increasing number of energy levels
decreasing number of isotopes
How many protons would an element with the atomic number of 18 have in its nucleus?
11
9
16
18
