Chemistry Knowledge Quiz
Chemistry Knowledge Quiz
Test your understanding of chemistry concepts with this challenging quiz! Designed to assess your knowledge of atomic structure, chemical bonds, and periodic trends, this quiz is perfect for students and chemistry enthusiasts alike.
Join now and discover:
- The fundamentals of electron configuration
- Valence electrons and their significance
- How chemical properties are determined
... Is a three-dimensional space around a nucleus where an electron is most likely to be found
Valence shell
Orbital
Energy level
Octet =
10 valence electrons
2 valence electrons
8 valence electrons
Consist of positive and negative ions
Ionic compound
Non-polar compound
Covalent compound
The electronegativity increases from
Top to down
Left to right
Right to left
The element that has the highest electronegativity is
Oxygen
Chlorine
Fluorine
Hydrogen
.... Are the building blocks of matter
Elements
Compounds
Metal
Nonmatel
It contains elements with similar properties in vertical columns
Periods
Groups
Periodic table
We can find electrons
Inside nucleus
Outside nucleus
Near to nucleus
Energy levels have a maximum number of elections =
2n^2
3n
3n^2
Metals form
Positive ions
Negative ions
They don't form ions
... Are solid at room temperature
Covalent compound
Ionic compound
Both of them
Covalent bonds form when atoms
Transfer electrons
Gain electrons
Lose electrons
Share electrons
Polar covalent bond occurs between
Non-metal atoms
Metal atoms
Non-metal and metal atoms
The electonegativity difference for ionic bonds is
0.5 to 1.7
0.0 to 0.4
1.8
1.8 or more
It has a separation of positive and negative charge
Polar molecules
Non-polar molecules
Ionic molecules
When the dipoles cancel, we will have
Polar molecules
Non-polar molecules
Ionic molecules
We use the latter "A" for
Representative elements
Transition elements
Halogens
Nobel gases
All atoms are electrically neutral because
They don't have electrons
They have a lot of neutrons
They have equal number of protons and electrons
They determine the chemical properties of the elements
Inner electrons
Middle electrons
Valence electrons
The atoms form octets to
Become larger
Become more stable
Become more active
Positive ions have
More electrons than protons
More protons than electrons
More neutrons than protons and electrons
We can separate elements into simpler substances
True
False
We use numbers from 1-16 for groups in the periodic table
True
False
Atomic numbers are specific for each element
True
False
There is increase in energy as the value of n of energy levels decreases
True
False
Orbital is a path the electrons follows
True
False
An atoms has 25 protons and 25 electrons and 30 neutrons, what is the atomic number?
25
30
55
If an atom has 12 protons and 14 neutrons, how many electrons it will have?
12
14
26
What is the maximum number of electrons in the third energy level?
10
8
18
32
How many valance electrons in Cl? (atomic number = 17)
7
5
2
How many valance electrons in kr? (atomic number = 36)
6
7
8
State the number of valence electrons for: 2,8,8,2
2
8
10
The change in electrons for octet in bromine requires a... (atomic number = 35 )
Loss of 1e
Gain 1e
Loss 7e
The change in electrons for octet in potassium requires a... (atomic number = 19 )
Gain 1e
Loss 1e
Gain 6e
Loss 6e
The ionic charge of potassium is
+1
-1
+6
-6
Select the correct formula: Ca^+2 and Cl^-1
CaCl
Ca2Cl
CaCl2
Select the correct formula: Al^+3 and O^-2
Al3O2
AlO
Al2O3
Select the correct formula: Mg^+2 and O^-2
MgO
Mg2O
Mg2O2
Identify if the compound is ionic or covalent: Na3PO4
Ionic
Covalent
Identify if the compound is ionic or covalent: Li2S
Ionic
Covalent
Identify if the compound is ionic or covalent: SF6
Ionic
Covalent
Identify if the compound is ionic or covalent: CO
Ionic
Covalent
Identify if the compound is ionic or covalent: NO
Ionic
Covalent
Identify if the compound is ionic or covalent: NaCN
Ionic
Covalent
Is the bond non-polar covalent, Polar covalent, ionic in O - Se? (O = 3.5, Se = 2.4)
Non-polar
Polar
Ionic
Is the bond non-polar covalent, Polar covalent, ionic in Br - I? (Br = 2.8, I = 2.5)
Non-polar
Polar
Ionic
Is the bond non-polar covalent, Polar covalent, ionic in N - N?
Non-polar
Polar
Ionic
Is the bond non-polar covalent, Polar covalent, ionic in H - F?
Non-polar
Polar
Ionic
Is the bond non-polar covalent, Polar covalent, ionic in Na - Cl?
Non-polar
Polar
Ionic
Determine the shape of: SiCl4
Bent
Pyramidal
Tetrahedral
Determine the shape of: H2S
Bent
Pyramidal
Tetrahedral
Determine the shape of: PH3
Bent
Pyramidal
Tetrahedral
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