WorksheetsIntro to Chemistry Review
Total questions: 50
Worksheet time: 25mins
The smallest particle of any pure element
atom
molecule
element
compound
The smallest particle of a substance that is made up of two or more elements
atom
molecule
element
compound
A substance that cannot be broken down by simple chemical and physical processes
atom
molecule
element
compound
A chemical substance that is made up of two or more different kinds of atoms bonded together
atom
molecule
element
compound
How many atoms are present in this solution?
9
3
4
2
How many molecules are present in this solution?
9
3
4
2
How many elements are present in this solution?
9
3
4
2
How many compounds are present in this solution?
9
3
4
2
What is the charge of a proton, electron, and neutron in order?
+1, -1, 0
0, +1, -1
-1, 0, +1
0, +1, +2
What is the relative mass of a proton?
1
0
1/1840
-1
What is the relative mass of a electron?
1
0
1/1840
-1
What is the relative mass of a neutron?
1
0
1/1840
-1
What particles are located in the nucleus of an atom?
protons and neutrons
neutrons and electrons
protons and electrons
protons only
What does the atomic number of an element tell us?
The element's number of protons
The element's number of protons and neutrons
The elements number of neutrons
The elements number of electrons
What does the atomic mass of an element tell us?
The element's number of protons
The element's number of protons and neutrons
The elements number of neutrons
The elements number of electrons
If Ag (silver) has an atomic number of 47 and 61 neutrons, what is its atomic mass?
108
14
47
61
If P (phosphorus) has an atomic number of 15 and an atomic mass of 31, how many electrons does it have?
46
16
15
31
If Ni (nickel) has an atomic number of 28 and 31 neutrons, how many protons does it have?
59
3
28
31
If W (tungsten) has 74 protons and 110 neutrons, what is its atomic number?
184
36
74
110
If K (potassium) has an atomic mass of 39 and 19 electrons, how many neutrons does it have?
58
20
39
19
If Cl (chlorine) has an atomic mass of 35 and 17 protons, how many neutrons does it have?
52
18
35
17
The outermost electrons in an element are called the...
valence electrons
shell electrons
free electrons
cool electrons
An elements ______ tells us how many valence electrons it has.
group
period
atomic mass
atomic symbol
How many electrons can the first shell hold?
2
4
6
8
How many electrons can the second shell hold?
2
4
6
8
How many electrons does an element's Bohr model show?
all of them
just the valence electrons
How many electrons does an element's Lewis Dot Structure show?
all of them
just the valence electrons
True or False: In nature pure elements are rare
true
false
The force that holds two or more atoms together is called _______.
a chemical bond
the power of friendship
magnetism
a molecule's polarity
Which electrons have the most amount of energy?
the ones furthest form the nucleus
the ones that are closest to the nucleus
the ones that just drank redbull
all electrons have the same amount of energy
Excluding hydrogen, how many valence electrons do elements want to get to to become stable?
2
4
6
8
Covalent bonds are formed when atoms __________ electrons.
share
gain or lose
destroy
get to know their
Ionic bonds are formed when atoms __________ electrons.
share
gain or lose
destroy
get to know their
Covalent bonds happen between a _____ and a _____.
nonmetal, nonmetal
metal, nonmetal
metalloid, nonmetal
metal, metal
Ionic bonds happen between a _____ and a _____.
nonmetal, nonmetal
metal, nonmetal
metalloid, nonmetal
metal, metal
Elements with a different amount of electrons are called _____.
ions
isotopes
polar
weird
Elements with a different amount of neutrons are called _____.
ions
isotopes
polar
weird
True or False: Ions with charges that add to zero will attract to each other.
true
false
Group 1 on the periodic table are called the ________.
alkali metals
alkaline metals
halogens
noble gases
Group 17 on the periodic table are called the ________.
alkali metals
alkaline metals
halogens
noble gases
Group 18 on the periodic table are called the ________.
alkali metals
alkaline metals
halogens
noble gases
True or False: Noble gases are the most reactive elements on the periodic table.
true
false
Ionic or Covalent? H2
Ionic
Covalent
Ionic or Covalent? NaCl
Ionic
Covalent
Ionic or Covalent? H2O
Ionic
Covalent
Ionic or Covalent? Na2O
Ionic
Covalent
Ionic or Covalent? CaCl2
Ionic
Covalent
Ionic or Covalent? CH4
Ionic
Covalent
Ionic or Covalent? NaBrO
Ionic
Covalent
Should Mr. Bremer shave his beard if you get a high enough class average on the test?
Yes
Please no
