WorksheetsEarth Chemistry Review
Total questions: 25
Worksheet time: 13mins
What is the simplest form of matter?
Element
Compound
Mixture
Molecule
The smallest unit of matter that keeps its chemical properties. It is Greek meaning "uncuttable."
Molecule
Compound
Element
Atom
What does the green dot represent?
electron
neutron
nucleus
proton
What does the yellow circle represent?
electron
neutron
nucleus
proton
What do the red and blue dots represent?
one is the electron and the other is a proton
one is a neutron and the other is an electron
one is a proton and the other is a neutron
one is an up quark and the other is a down quark
What is the charge of a proton?
Positive
Negative
Neutral
It depends upon the atom it is found.
What is the charge of a neutron?
Positive
Negative
Neutral
It depends upon the atom it is found.
What is the charge of an electron?
Positive
Negative
Neutral
It depends upon the atom it is found.
What is zinc's atomic number?
30
65
65.390
35
How many protons does an atom of zinc have?
30
65
65.390
35
How many electrons does an atom of zinc have?
30
65
65.390
35
How many neutrons does the most common isotope of zinc have?
30
65
65.390
35
If there is a Zn atom with a charge of +2, how many protons does it have?
30
32
28
35
If there is a Zn atom with a charge of +2, how many electrons does it have?
30
32
28
35
How many valence electrons does potassium have?
19
1
4
39
How many valence electrons does bromine have?
35
80
4
7
What kind of bond is CaF2?
covalent
ionic
metallic
nonmetallic
What kind of bond is F2?
covalent
ionic
metallic
nonmetallic
What kind of bond is MgCl2?
covalent
ionic
metallic
nonmetallic
What kind of bond is FeCrC?
covalent
ionic
metallic
nonmetallic
What kind of bond occurs when electrons are transferred between two atoms?
covalent
ionic
metallic
nonmetallic
What kind of bond occurs when electrons are shared between two atoms?
covalent
ionic
metallic
nonmetallic
What kind of bond occurs when a nonmetal bonds with another nonmetal?
covalent
ionic
metallic
nonmetallic
What kind of bond occurs when a nonmetal bonds with a metal?
covalent
ionic
metallic
nonmetallic
What kind of bond occurs when many atoms share many electrons?
covalent
ionic
metallic
nonmetallic
