WorksheetsChemistry Review
Total questions: 31
Worksheet time: 16mins
Made up of Protons, Neutrons, and Electrons
Periods
Groups
Nucleus
Atoms
Which of the following is a Replacement Reaction?
4Na + O2 > 2Na2O
HCl + NaOH > H2O + NaCl
2H2 + O2 > 2H2O
H2O2 > H2 + O2
What is the atomic weight of H2O?
33
12
24
18
Where is the mass of the atom?
In the shells
The valence electrons
The nucleus
The electrons
Which part of the atom takes up the most space? (What makes up most of the volume of an atom?)
The Electrons
The Protons
The Neutrons
The Nucleus
The Nucleus of an atom is made up of:
protons and electrons
protons and neutrons
electrons and neutrons
electrons
The atomic number of boron is 5. Boron-11 has an atomic mass of 11. It contains:
5 protons and 6 electrons.
6 protons and 5 neutrons.
5 electrons and 6 protons.
5 protons and 6 neutrons.
Which of the following equation is balanced?
Na + O2 > Na2O
4Na + 2O2 > Na2O
Na + 4O2 > 2Na2O
4Na + O2 > 2Na2O
Which of the following equation is balance?
N2 + H3 > NH3
N2 + 3H2 > 2NH3
3N2 + 2H3 > NH3
2N2 + H3 > 3NH3
Which of the following equation is balance?
Ca + O2 > CaO
N2 + O2 > NH3
H2O + NaCl > HCl + NaOH
K + Cl2 > KCl
Which of the following compounds is expected to have a pH of 12?
HCl
H2O
LiOH
H2SO4
Which of the following is an acid?
NaCl
CH4
KOH
HCl
Which group on the periodic table is composed of all gases?
1
3
16
18
Atomic number of an element is equal to:
the number of electrons in the nucleus
the number of protons in the nucleus
the number of neutrons in the nucleus
the number of electron shells
Which would be the expected pH level for a strong acid?
pH level of 14
pH level of 10
pH level of 7
pH level of 2
Using the periodic table, how many Protons does one Carbon atom have?
2
4
6
12
Which element has 11 protons in its nucleus?
Cu
B
Na
C
How many electrons does an atom of Chlorine have?
1
3
17
35
Which of the following compounds contain an ionic bond?
HCl
NH3
CH4
NaCl
Which of the following compound contain a covalent bond?
Li2O
NaCl
NH3
MgCl2
The Bohr model represents which of the following element?
Nitrogen
Silicon
Argon
Chlorine
Which of the following is true for Covalent Bonds?
Electrons are transferred from one atom to another.
Electrons are shared between atoms.
They are the bonds that form between metals and non-metals.
There is electrostatic attraction.
What type of bonds form between metals and a non-metal?
Covalent bonds
Ionic bonds
Nuclear bonds
Polar bonds
Which of the following Element has two electron shells?
He
Na
Mg
Li
How many valence electrons does Oxygen have?
2
4
6
8
Which of the following elements have 5 valence electrons?
Boron
Carbon
Iodine
Nitrogen
Which of the following element could this Dot diagram represent?
Carbon
Iodine
Sodium
Nitrogen
A numbered scale used to show how acid or base something is.
Isotope
pH
Polymer
Ionic
How many valence electrons does this atom have?
2
5
7
12
How many Hydrogen (H) atoms are there in the formula?
2
3
5
6
Which of the following Elements has two valence electron and three electron shells?
B
Na
Mg
Li
