Unit 5 Exam
By Craig Fisher
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Last updated over 4 years ago
75 Questions
Answer the questions by clicking on the correct answer. You will have ONE class period in which to complete this exam.
2 points
2
Question 1
1.
What occurs between atoms that do not easily lose electrons?
What occurs between atoms that do not easily lose electrons?
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2
Question 2
2.
What can group numbers on the periodic table help you determine?
What can group numbers on the periodic table help you determine?
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Question 3
3.
What do atoms gain, lose or share when they bond?
What do atoms gain, lose or share when they bond?
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Question 4
4.
How many valence electrons does helium need to have a full valence level?
How many valence electrons does helium need to have a full valence level?
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Question 5
5.
What is a bond that forms when electrons are transferred from one atom to another?
What is a bond that forms when electrons are transferred from one atom to another?
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Question 6
6.
What are the charged particles that form when atoms gain or lose electrons?
What are the charged particles that form when atoms gain or lose electrons?
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Question 7
7.
What does a sodium atom become when it loses its only valence electron?
What does a sodium atom become when it loses its only valence electron?
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Question 8
8.
What is the charge of an aluminum ion that has 13 protons and 10 electrons?
What is the charge of an aluminum ion that has 13 protons and 10 electrons?
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Question 9
9.
If the ending -ide is added to the name of an ion, what do we know about the ion?
If the ending -ide is added to the name of an ion, what do we know about the ion?
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Question 10
10.
What is the name of the three dimensional pattern that forms when ions bond?
What is the name of the three dimensional pattern that forms when ions bond?
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Question 11
11.
Most molecules are composed of what?
Most molecules are composed of what?
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Question 12
12.
Why can metals bend without breaking?
Why can metals bend without breaking?
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Question 13
13.
How are electrons in an atom organized?
How are electrons in an atom organized?
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Question 14
14.
What are the only parts of an atom that make chemical bonds?
What are the only parts of an atom that make chemical bonds?
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Question 15
15.
What is the same within each group on the periodic table?
What is the same within each group on the periodic table?
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Question 16
16.
Why don't noble gases normally form chemical bonds?
Why don't noble gases normally form chemical bonds?
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Question 17
17.
What is the charge of a sodium ion with 11 protons and 10 electrons?
What is the charge of a sodium ion with 11 protons and 10 electrons?
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Question 18
18.
The more easily an atom gains an electron, what does it release more of?
The more easily an atom gains an electron, what does it release more of?
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Question 19
19.
What is the smallest particle into which a covalently bonded compound can be divided and still be the same compound?
What is the smallest particle into which a covalently bonded compound can be divided and still be the same compound?
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Question 20
20.
What are the elements found in nature as diatomic molecules called?
What are the elements found in nature as diatomic molecules called?
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Question 21
21.
Which of the following is NOT an example of a diatomic element?
Which of the following is NOT an example of a diatomic element?
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Question 22
22.
What allows metals to bond?
What allows metals to bond?
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Question 23
23.
Which of the following properties of a metal means that it can be drawn into wires?
Which of the following properties of a metal means that it can be drawn into wires?
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Question 24
24.
Which of the following represents the number of protons in an atom?
Which of the following represents the number of protons in an atom?
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Question 25
25.
How many electrons fill the valence level of an atom?
How many electrons fill the valence level of an atom?
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Question 26
26.
Which of the following statements describes a chemical change?
Which of the following statements describes a chemical change?
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Question 27
27.
Which of the following is NOT a sign of a chemical reaction?
Which of the following is NOT a sign of a chemical reaction?
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Question 28
28.
Which of the following occurs when water freezes?
Which of the following occurs when water freezes?
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Question 29
29.
What is the force that holds two atoms together called?
What is the force that holds two atoms together called?
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Question 30
30.
What causes chemical bonds in molecules to break?
What causes chemical bonds in molecules to break?
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Question 31
31.
How do substances form during a chemical reaction?
How do substances form during a chemical reaction?
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Question 32
32.
A calcium carbonate molecule has 1 calcium (Ca) atom, 3 oxygen (O) atoms, and 1 carbon (C) atom. Which of the following shows the chemical formula for calcium carbonate?
A calcium carbonate molecule has 1 calcium (Ca) atom, 3 oxygen (O) atoms, and 1 carbon (C) atom. Which of the following shows the chemical formula for calcium carbonate?
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Question 33
33.
The chemical symbol for iron is Fe. The chemical symbol for oxygen is O. The formula for iron oxide, a type of rust, is Fe2O3. How many iron atoms are in one molecule of iron oxide?
The chemical symbol for iron is Fe. The chemical symbol for oxygen is O. The formula for iron oxide, a type of rust, is Fe2O3. How many iron atoms are in one molecule of iron oxide?
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Question 34
34.
What is the charge of an ionic compound?
What is the charge of an ionic compound?
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Question 35
35.
Which of the following is the product in the chemical formula N + O2------> NO2?
Which of the following is the product in the chemical formula N + O2------> NO2?
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Question 36
36.
Which of the following uses coefficients correctly to balance the equation N2 + H2------> NH3?
Which of the following uses coefficients correctly to balance the equation N2 + H2------> NH3?
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Question 37
37.
Which of the following states the law of conservation of mass?
Which of the following states the law of conservation of mass?
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Question 38
38.
Nitrogen dioxide is a covalent compound. How many oxygen atoms are in a nitrogen dioxide molecule?
Nitrogen dioxide is a covalent compound. How many oxygen atoms are in a nitrogen dioxide molecule?
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Question 39
39.
How many oxygen atoms are present on the reactant side of the chemical equation 4Fe + 3O2 ------> 2Fe2O3?
How many oxygen atoms are present on the reactant side of the chemical equation 4Fe + 3O2 ------> 2Fe2O3?
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Question 40
40.
Which of the following equations shows a double displacement reaction?
Which of the following equations shows a double displacement reaction?
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Question 41
41.
In a single displacement reaction,
In a single displacement reaction,
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Question 42
42.
An ion is
An ion is
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Question 43
43.
Which of the following will NOT increase the rate of a chemical reaction?
Which of the following will NOT increase the rate of a chemical reaction?
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Question 44
44.
Which of the following chemical equations shows an endothermic reaction?
Which of the following chemical equations shows an endothermic reaction?
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Question 45
45.
Which of the following is NOT an example of a chemical reaction?
Which of the following is NOT an example of a chemical reaction?
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Question 46
46.
Which of the following is an example of a diatomic molecule?
Which of the following is an example of a diatomic molecule?
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Question 47
47.
Which of the following phrases describes a catalyst?
Which of the following phrases describes a catalyst?
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Question 48
48.
How many atoms are represented in the formula CaCO3
How many atoms are represented in the formula CaCO3
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Question 49
49.
If a chemical symbol in a chemical formula has no subscript, it means
If a chemical symbol in a chemical formula has no subscript, it means
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Question 50
50.
Which of the following is the chemical formula for a dinitrogen trioxide molecule?
Which of the following is the chemical formula for a dinitrogen trioxide molecule?
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Question 51
51.
If it is brittle, dissolves easily in water, has a high melting point and conducts electric current, it is a(n)
If it is brittle, dissolves easily in water, has a high melting point and conducts electric current, it is a(n)
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Question 52
52.
Which compound has the weaker chemical bond?
Which compound has the weaker chemical bond?
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Question 53
53.
When a metal reacts with a nonmetal it makes
When a metal reacts with a nonmetal it makes
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Question 54
54.
Most covalent compounds
Most covalent compounds
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Question 55
55.
Sugar is a covalent compound that dissolves in water but does not form ions, so it
Sugar is a covalent compound that dissolves in water but does not form ions, so it
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Question 56
56.
Covalent compounds have
Covalent compounds have
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Question 57
57.
What substances can acids react with to produce hydrogen gas?
What substances can acids react with to produce hydrogen gas?
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Question 58
58.
Acids conduct electric current by forming
Acids conduct electric current by forming
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Question 59
59.
Acids have a
Acids have a
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Question 60
60.
Bases have a
Bases have a
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Question 61
61.
When a base is added to red litmus paper, the indicator turns
When a base is added to red litmus paper, the indicator turns
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Question 62
62.
If a cleaning product includes ammonia as an ingredient, it probably is made from a(n)
If a cleaning product includes ammonia as an ingredient, it probably is made from a(n)
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Question 63
63.
When all the molecules of an acid break apart in water, the solution is called a
When all the molecules of an acid break apart in water, the solution is called a
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Question 64
64.
Citric acid is a weak acid, so only a few molecules would break apart when
Citric acid is a weak acid, so only a few molecules would break apart when
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Question 65
65.
When acids and bases come in contact with each other, they
When acids and bases come in contact with each other, they
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Question 66
66.
One way to test pH is to use a strip of paper that has several
One way to test pH is to use a strip of paper that has several
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Question 67
67.
A neutral solution has a pH of
A neutral solution has a pH of
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Question 68
68.
Sodium chloride, sodium nitrate and calcium sulfate are all
Sodium chloride, sodium nitrate and calcium sulfate are all
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Question 69
69.
How many atoms can a carbon atom make bonds with?
How many atoms can a carbon atom make bonds with?
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Question 70
70.
Which hydrocarbon contains only single bonds between carbon atoms?
Which hydrocarbon contains only single bonds between carbon atoms?
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Question 71
71.
Carbohydrates, lipids, proteins and nucleic acids are all
Carbohydrates, lipids, proteins and nucleic acids are all
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Question 72
72.
What are aromatic hydrocarbons based on?
What are aromatic hydrocarbons based on?
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Question 73
73.
Brittleness and a high melting point are two properties of
Brittleness and a high melting point are two properties of
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Question 74
74.
When an acid and a base neutralize each other, what remains?
When an acid and a base neutralize each other, what remains?
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Question 75
75.
Over 90% of all compounds are of what type?
Over 90% of all compounds are of what type?
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