WorksheetsInterim Review
Total questions: 50
Worksheet time: 28mins
A positively charged ion will bond with
A cation
An anion
Any ion
No ion
What does the number 18.9984 represent in the image?
the atomic number of fluorine
the number of protons in fluorine
the number of electrons in fluorine
the average atomic mass of fluorine
The atomic number of magnesium is 12. This means that its nucleus must contain
6 protons and 6 neutrons
6 neutrons and 6 electrons
12 neutrons and no protons
12 protons and no electrons
What is the chemical formula for the binary compound nitrogen dioxide?
(NO)2
1N2Ox
NO2
nitro1oxide2
Which statement is correct about nitrogen?
All nitrogen atoms have 7 protons
The mass number of nitrogen is 21
All nitrogen atoms have 14 protons
Nitrogen atoms have more protons than a fluorine anion.
When magnesium and fluorine combine in an ionic bond, the resulting formula will be
Mg2F
Mg2F2
MgF
MgF2
A compound containing sodium and chlorine, in a binary ionic compound, would be named
sodium chlorine
sodium monochloride
sodium chloride
monosodium monochloride
Which element is most likely to be a gas at room temperature?
aluminum
nitrogen
potassium
sodium
Which subatomic particle is NOT found at the center of the atom?
atom
electron
neutron
proton
One radioactive isotope of calcium has an atomic mass of 47. How many protons are in this calcium-47 nucleus?
17
20
27
47
Which statement best describes covalent bonds?
Formed by metals and nonmetals
Typical of carbon compounds
Created by the attractions between oppositely charged ions
Dissolve in water and allow for the conduction of electricity
Which image is pointing to the section of the atom responsible for the majority of the mass of the atom?
A
B
C
D
What is the correct balanced equation of the reaction shown?
KClO3 ---> KCl + O2
KClO3 ---> KCl + O2
2KClO3 ---> KCl + 3O2
2KClO3 ---> 2KCl + 3O2
2KClO3 ---> 2KCl + 6O2
How many neutrons are in a typical beryllium nucleus?
3
4
5
9
Which statement is true for both protons and neutrons?
both have a neutral charge
both have a positive charge
both are located in the nucleus
both contribute to the atomic number
What is the correct chemical name for the binary compound NI3?
nitrogen iodide
nitrogen triodide
mononitrogen iodide
mononitrogen triodide
A chemical reaction occurs when 2 products are produced after 1 reactant breaks down. If the mass of the reactant is 12g, and the mass of one product is 8g, what is the mass of the other product?
12g
8g
20g
4g
What is the name of the binary compound K2O?
potassium oxide
dipotassium oxide
potassium (II) oxide
dipotassium monoxide
Which of these is a balanced chemical equation?
CO + O2 --> CO2
CO + 2O2 --> 2CO2
2CO + O2 --> 2CO2
2CO + 2O2 --> 2CO2
All elements circled in the picture are alkaline earth metals. What do they have in common?
They are all nonmetals that are very reactive
They are all metals with 2 valence electrons
They are all metals that are not reactive
They are all metalloids that are very reactive
The atomic mass of an element is the sum of neutrons and
atoms
electrons
ions
protons
Why does this model of a chemical reaction obey the Law of Conservation of Matter?
because they both start and end with two sets of particles
because they both start and end with diatomic (two-atomed) molecules
because they both start and end with the same types of particles
because there are the same number of atoms of each element shown on both sides
2Ag + H2S ➞ Ag2S + H2
According to the equation for this chemical reaction, what does the 2 in front of the 2Ag tell us?
Two atoms of silver are lost in this reaction.
Two atoms of silver are produced by this reaction.
Two atoms of silver are needed to complete the reaction.
Two atoms of silver are gained to produce silver sulfide.
All of the alkali metals, Group 1, have one valence electron. Which of these would represent the oxidation number of the alkali metals such as lithium and sodium?
-7
-1
+7
+1
The oxidation number of all metals on the periodic table have a positive (+) charge. Which of these BEST explains why?
Metals are known to add protons to their nuclei causing them to become positively charged.
All metals lose one or more valence electrons to become stable, giving them a positive oxidation number.
All metals gain one or more valence electrons to become stable, giving them a positive oxidation number.
Metals are known to lose protons and add neutrons to their nuclei causing them to become positively charged.
During a reaction, a halogen chemically combines with a Group 1 element to form a compound. How does this reaction occur, based on the atomic structure of each element?
A halogen atom loses an electron to an atom of a Group 1 element.
A halogen atom gains an electron from an atom of a Group 1 element.
A halogen atom loses two electrons to an atom of a Group 1 element.
A halogen atom shares an electron with an atom of a Group 1 element.
What is the chemical formula for potassium oxide?
K2O
KO2
KO
K2O2
The element hydrogen has three naturally occurring isotopes, H-1, H-2, H-3. What is the number of protons, neutrons, and electrons in H-3, or tritium?
1 proton, 1 neutron, 1 electron
1 proton, 2 neutrons, 1 electron
1 proton, 1 neutron, 3 electrons
2 protons, 1 neutrons, 1 electron
What is the chemical formula for the compound calcium chloride?
Ca2Cl
CaCl2
ClCa2
CaCl
Water, H2O, is a molecule made of oxygen and hydrogen. The bonds that hold water molecules together are due to shared ___________, and known as covalent bonds.
electrons
neutrons
photons
protons
Use the IUPAC nomenclature rules to give the name for this compound - N2O3.
nitrogen oxide
nitrogen trioxide
nitrogen (II) oxide
dinitrogen trioxide
The IUPAC name for the common household cleaner, ammonia, is nitrogen trihydride. Identify the formula of ammonia.
NH
NH3
N3H
N3H3
A substance that conducts electricity, is malleable, ductile, and has luster would be classified as a
compound
element
metal
nonmetal
Which subatomic particle has a negative charge?
electron
neutron
proton
nucleus
Ca3(PO4)2 + H2SO4 → CaSO4 + H3PO4
What coefficients balance the chemical equation shown?
1, 1, 1, 1
1, 3, 3, 2
1, 2, 3, 3
3, 2, 1, 3
Photosynthesis is a chemical reaction where carbon dioxide and water react to form glucose (C6H12O6) and oxygen gas. Which represents the proper balanced equations for photosynthesis?
C6H12O6 + O2 → CO2 + H2O
CO2 + H2O → C6H12O6 + O2
C6H12O6 + 6O2 → 6CO2 + 6H2O
6CO2 + 6H2O → C6H12O6 + 6O2
A calcium bromide compound is represented by which formula?
Ca2Br
Ca2Br2
CaBr
CaBr2
The Groups 1 and 2 on the periodic table contain what atom type?
metals
non-metals
metalloids
noble gases
An atom that has lost or gained electrons is known as an ion. Which compound below is made up of ions?
CH4
CO
KBr
SO3
Iron and sulfur react to yield iron sulfide. Balance this reaction.
___Fe(s) + ___S8(s) → ___FeS(s)
1, 8, 1
1, 1, 1
8, 1, 8
8, 8, 8
Calcium metal reacts with a potassium chloride solution to form calcium chloride and potassium ions. Balance this reaction.
___Ca(s) + ___KCl(aq) → CaCl2(s) + ___K+(aq)
1, 2, 1, 2
1, 2, 1, 1
1, 1, 1, 1
2, 1, 2, 1
The electrostatic attractions in crystalline salts, such as sodium chloride, are formed by __________ between positive and negative ions.
sharing electrons
a sea of electrons
dipole attractions
transferring electrons
Determine the correct name for the compound, Mg3N2.
Manganese nitride
Magnesium nitride
Magnesium (II) nitride
Trimagnesium dinitride
If one molecule of glucose (C6H12O6) reacts completely with three molecules of oxygen (O2), what is the TOTAL number of atoms that will be in the products?
24
30
38
48
____________ are atoms with the same number of protons , but differing numbers of neutrons .
atoms
ions
isotopes
molecules
Determine the identity of an unknown element X using the given table and following clues:
I) Element X is a solid
II) Element X will bond ionically with element O in a 1:1 ratio.
III) As a positive ion, it will have the same number of electrons as argon.
calcium
chlorine
potassium
sulfur
Listed below are sets of elements.
Which group contains elements that have the following characteristics:
1) At least one is a metalloid.
2) At least one forms an ion with a charge of -2.
3) At least one is a gas.
4) At least one is a halogen.
oxygen, fluorine, aluminum
chlorine, sulfur, silicon
arsenic, oxygen, neon, hydrogen
silicon, magnesium, neon, iodine
The formula of a salt is XCl2. The X-ion in this salt has 28 electrons. The metal X is
Ni
Zn
Fe
V
Atom A has an atomic number of 19 and mass number of 40. Atom B has an atomic number of 20 and a mass number of 40. Which of these is an accurate statement?
Atom A has more protons than Atom B.
Atom A has one less proton and one more neutron than Atom B.
Atom A has an extra nucleon compared to Atom B.
Atom A has one more proton and one more electron than Atom B.
Which combustion equation violates the law of conservation of matter?
CH4 + 2O2 -> CO2 + 2H2O
C3H8 + 6O2 -> 3CO2 + 4H2O
2C6H14 + 19O2 -> 12CO2 + 14H2O
2C8H18 + 25O2 -> 16CO2 + 18H2O
