WorksheetsChemistry Chapter 3, 4 and 5 Review
Total questions: 48
Worksheet time: 24mins
The density of tin is 7.3 g/cm3 and aluminum is 2.7 g/cm3. What is true about the density of a tin can that is coated with aluminum?
Its density is 2.7 g/cm3.
Its density is 7.3 g/cm3
Its density is between 2.8 g/cm3 and 7.3 g/cm3.
There is not enough information to determine the density of the block.
The chemical formula for the compound copper (II) sulfate is CuCO3. What is most likely to be true about the properties of copper (II) carbonate, copper, carbon and oxygen?
All four substances have similar properties.
Copper (II) sulfate has properties very similar to those of copper.
Copper (II) sulfate has properties very similar to those of oxygen.
All four substances have different properties.
In the copper cycle experiment shown below, which statement is true according to the law of conservation of mass?
The amount of copper at the beginning of the cycle is the same as the amount of copper at the end of the cycle.
The amount of copper at the beginning of the cycle is greater than the amount of copper at the end of the cycle.
The amount of copper at the beginning of the cycle is slightly less than the amount of copper at the end of the cycle
The amount of copper at the beginning of the cycle is the same as the amount of copper at the end of the cycle, unless some is destroyed in the reaction.
Use a periodic table to answer the question. Which pairs of elements would you expect to have the most similar properties?
Gold, Au and Calcium, Ca
Gallium, Ga and Zinc, Zn
Rubidium, Rb and Strontium, Sr
Bromine, Br and Chlorine, Cl
Use a periodic table to answer the question. Which of these describes Selenium location on the periodic table?
Group 6A, Period 4
Group 4, Period 6A
Group 1A, Period 3
Group 16, Period 3
How many different elements are included in the compound CaCrO4?
3
4
5
6
Which statement describes an electron?
The dense, positively charged structure found in the center of the atom.
A particle that does not have a charge found in the nucleus of an atom.
A particle with a negative charge found outside the nucleus of an atom.
A particle with a positive charge found in the nucleus of an atom.
Which statement describes the nucleus of an atom?
The dense, positively charged structure found in the center of the atom.
A particle that does not have a charge found in the nucleus of an atom.
A particle with a negative charge found outside the nucleus of an atom.
A particle with a positive charge found in the nucleus of an atom.
What experimental evidence supports a model of the atom that consists of electrons distributed in a “pudding” of positive charge?
Atoms form compounds.
Neutrons have similar masses to protons.
Electrons can be removed from materials.
Copper emits green light in a flame test.
In 1911, Ernest Rutherford shot alpha particles at a thin sheet of atoms. Most of the particles went through the sheet, while a small number bounced back. What did this experiment allow him to conclude about the nature of atoms?
Electrons orbit at different distances from the nucleus, as in a solar system.
Most of an atom must be empty space.
Alpha particles must be very large.
An alpha particle is composed of two protons and two neutrons.
Which particles account for most of the mass of an atom?
electrons
electrons and protons
electrons and neutrons
protons and neutrons
An atom of nitrogen, N, has a mass of 15 amu. An atom of oxygen, O, has the identical mass. How is this possible?
Both have 7 protons and 8 neutrons.
Both have 8 protons and 7 neutrons.
They have different numbers of protons and neutrons.
These atoms are isotopes of one another.
What is the number of protons in a Phosphorus atom?
15
16
30
31
An atom of which element has 16 electrons when neutral?
Oxygen
Sulfur
Phosphorus
Chlorine
How many electrons are in a neutral sodium atom?
11
12
23
22
The atomic number for phosphorus, P, is 15. The average atomic mass is 30.97 amu. What does this indicate about the number of neutrons?
There are 30.97 neutrons in each atom.
Some atoms have 30 neutrons and some have 31 neutrons.
There are 15.97 neutrons in each atom.
Some atoms have 15 neutrons and some have 16 neutrons.
Which of the following represents an isotope of neon, Ne?
Isotopes of an element differ only in the number of what subatomic particles?
protons
electrons
neutrons
protons and neutrons
Aluminum has an atomic number of 13 and an average atomic mass of 26.98 amu. Predict the isotope you would find in the greatest abundance for lithium.
aluminum-13
aluminum-27
aluminum-26
aluminum-13.98
The element boron has two common isotopes. About 75% of the boron atoms found are boron-11, while the remaining 25% are boron-10. The average atomic mass of boron is about _____.
9.5 amu
10.0 amu
10.6 amu
11.2 amu
The number of which subatomic particle determines identity of the element
electron
neutron
proton
atom
Which best describes what occurs when heating a compound containing a metal in the flame of a Bunsen burner?
Forms new atoms in the compound. When these new atoms are formed in the compound, thes release energy as colored light.
Can cause electrons in some of the metal atoms to move further away from the nucleus. When these excited electrons return to their original locations, energy is given off in the form of colored light.
Can destroy atoms in the compound. When the atoms of the compound are destroyed, this gives off energy in the form of heat and colored light.
Can cause new nonmetal atoms to be formed in the compound. These new nonmetal atoms release energy in the form of colored light when they are created.
Use the table to determine the color of the flame produced in a flame test by a sample of strontium hydroxide Sr(OH)2.
yellow-orange
green
pink-lilac
red
How many valence electrons does Magnesium have
1
2
3
4
An atom that has 6 valence electrons is in which group?
chalcogens 6A
alkali 1A
alkaline earth 2A
halogens 7A
Which is the correct shell model for the magnesium atom?
Which statement is true about valence electrons and core electrons?
The number of valence electrons decreases by one as you move from left to right on the periodic table, while the number of core electrons remains the same.
A core electron is located in the outermost electron shell of an atom. All other electrons besides the core electrons are considered valence electrons.
The number of valence electrons and core electrons remains the same as you move from left to right on the periodic table.
A valence electron is located in the outermost electron shell of an atom. All other electrons besides the valence electrons are considered core electrons.
What ion has the same number of electrons as or wants to look like neon?
Cl-
K+
O-2
P-3
To create an ion from a neutral atom, which of these values is changed?
number of protons
number of electrons
number of neutrons
number of nuclei
The illustration below is a shell diagram of a calcium atom. When calcium forms an ion to bond with sulfide in calcium sulfide, what is the charge on the calcium ion?
+6
-2
+2
-6
What is the correct formula for lithium oxide?
LiO
LiO2
Li4O2
Li2O
An ionic compound is formed when ____________.
hydroxide ions of a compound bond to nitrate ions in another compound
metal atoms of an element transfer electrons to nonmetal atoms of another element
neutral compounds gain electrons from another compound
metal atoms of an element accept electrons from nonmetal atoms of another element
The rule of zero charge states that ____________.
an atom that gains an electron must also gain a proton to remain electrically neutral
an ionic compound contains two or more elements that have no charge
the charges on metal cations and nonmetal anions in an ionic compound add up to zero
atoms gain neutrons when forming ionic compounds
Which of these compounds is not likely to form?
AlF3
NaBr2
CaO
MgCl2
What are the ions in the compound Calcium oxide?
Ca+2 and O-1
Ca+2 and O-6
Ca+2 and O-2
Ca+1 and O+1
What is the name of this ionic compound: Al2S3
aluminum sulfide
dialuminum trisulfide
aluminum trisulfide
dialuminum sulfide
What statement best describes noble gases?
Noble gases often gain electrons to combine with other elements.
Noble gases have 7 electrons in their valence shell and combine easily with other elements to form compounds.
Noble gases have only 1 electron in their valence shell and combine easily with other elements to form compounds.
Noble gases tend not to combine with other elements because their valence shell is full.
What is the name of this compound: Ca(NO3)2
Calcium nitride
Calcium nitrate
Calcium dinitrate
Calcium nitrogen oxide
What is the chemical formula for copper (II) phosphate?
CuPO4
Cu3PO4
Cu3(PO4)2
Cu3P2
What is the charge on the transition metal cation in Cu2O?
Cu+1
Cu+2
Cu-1
Cu+4
Which substance do you predict will dissolve in water?
Cu(s)
SiO2
MgO
C20H42
What types of bonding do you find in H2O?
ionic
molecular covalent
network covalent
metallic
What type of bonding do you find in KCl?
Ionic
Molecular covalent
Network covalent
Metallic
Which substance do you predict will conduct electricity based on the formula and physical form described?
LiCl(s)
Mg(NO3)2(aq)
Al(s)
SiO2
Using the periodic table, is the element with an atomic number of 32, a metal, nonmetal or a metalloid?
metal
nonmetal
metalloid
both non metal and metal
What is the difference between an ionic bond and covalent bonds?
Ionic bonds transfer electrons from cations to anions and opposite charges attract, while covalent bonds are created by the sharing of elections.
Covalent bonds take electrons and ionic bonds share ions
Covalent bonds share electrons, while ionic bonds keep their electrons
Ionic bonds do not conduct electricity where as covalent bonds do conduct electricity
Is the calcium ion a cation or anion?
anion
cation
neither
both
Positive and negative particles will attract. What particle will attract to a positive charge?
nucleus
proton
neutron
electron
