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WorksheetsChem Final Exam Review
Total questions: 62
Worksheet time: 43mins
Which subatomic particle has a negative charge?
Proton
Neutron
Electron
Nucleus
What is the chemical symbol for sodium?
S
Na
So
Sn
Which element is a good conductor of electricity?
Sulfur
Copper
Oxygen
Helium
What type of bond is formed when electrons are transferred from one atom to another?
Covalent bond
Ionic bond
Metallic bond
Hydrogen bond
Which of the following is an insulator?
Silver
Glass
Iron
Gold
What is the formula for magnesium chloride?
MgCl
MgCl 2
Mg 2 Cl
Mg 2 Cl 2
Which group in the periodic table contains the noble gases?
Group 1
Group 2
Group 17
Group 18
What is the charge on a chloride ion?
+1
-1
0
+2
Which of the following is a correct observation?
The solution turned blue.
The solution is probably acidic.
The solution might be copper sulfate.
The solution could react with zinc.
What is the atomic number of oxygen?
6
7
8
9
Which element has the highest electronegativity?
Fluorine
Oxygen
Chlorine
Nitrogen
Which of the following is a correct chemical formula for potassium oxide?
KO
K 2 O
KO 2
K 2 O 2
Which statement is an inference?
The wire is hot.
The wire is glowing red.
The wire is made of copper.
The wire is 10 cm long.
Why do metals conduct electricity well?
They have tightly bound electrons.
They have free-moving electrons.
They have large atomic numbers.
They are always solid.
Which trend is observed as you move down Group 1 in the periodic table?
Atomic radius decreases
Reactivity increases
Electronegativity increases
Ionization energy increases
What is the correct formula for aluminum oxide?
AlO
Al 2 O 3
AlO 2
Al 3 O 2
Which of the following pairs will form an ionic bond?
Oxygen and Nitrogen
Sodium and Chlorine
Carbon and Hydrogen
Sulfur and Oxygen
Which statement best explains why ionic compounds have high melting points?
They have weak bonds.
They have strong electrostatic forces between ions.
They are made of molecules.
They contain covalent bonds.
Which of the following is NOT a conductor?
Copper
Aluminum
Plastic
Silver
What is the correct formula for calcium nitrate?
CaNO 3
Ca(NO 3 ) 2
Ca 2 NO 3
Ca 2 (NO 3 ) 2
Which element is most likely to lose one electron to form a cation?
Fluorine
Sodium
Oxygen
Nitrogen
Which of the following best describes the trend in ionization energy across a period?
It decreases
It increases
It stays the same
It fluctuates randomly
A student observes that a solution conducts electricity. What inference can be made?
The solution contains ions.
The solution is pure water.
The solution is an insulator.
The solution is nonpolar.
Which of the following is the correct formula for ammonium sulfate?
NH 4 SO 4
(NH 4 ) 2 SO 4
NH 4 2 SO 4
(NH 4 )SO 4
A compound is formed between magnesium and oxygen. Predict its formula and explain your reasoning.
MgO, because magnesium forms a 2+ ion and oxygen forms a 2− ion, resulting in a 1:1 ratio.
Mg 2 O, because two magnesium atoms are needed for one oxygen atom.
MgO 2 , because oxygen needs two magnesium atoms.
Mg 2 O 2 , because both elements form 2+ and 2− ions.
Given the periodic table, how would you determine which element has the largest atomic radius in Period 3?
Choose the element farthest to the right.
Choose the element farthest to the left.
Choose the element in the middle.
Choose the element with the highest atomic number.
A student mixes two solutions and observes a white precipitate. What inference can be made about the ions present?
The ions formed an insoluble compound.
The ions are all soluble.
The solutions are neutral.
The solutions are acidic.
Explain why sodium chloride conducts electricity when dissolved in water but not in solid form.
In water, ions are free to move, allowing conductivity; in solid form, ions are fixed in place.
In solid form, electrons move freely; in water, they do not.
In water, sodium and chloride atoms bond covalently.
In solid form, sodium chloride is a conductor.
A compound contains potassium and bromine. Predict its formula and justify your answer.
KBr, because potassium forms a 1+ ion and bromine forms a 1− ion, resulting in a 1:1 ratio.
K 2 Br, because potassium needs two atoms for one bromine.
KBr 2 , because bromine needs two atoms for one potassium.
K 2 Br 2 , because both elements form 2+ and 2− ions.
A student is given a list of materials: copper, rubber, aluminum, and glass. How should the student classify them as conductors or insulators, and what evidence supports this classification?
Copper and aluminum are conductors; rubber and glass are insulators, because metals conduct electricity and nonmetals do not.
Copper and glass are conductors; rubber and aluminum are insulators, because glass conducts electricity.
Rubber and aluminum are conductors; copper and glass are insulators, because rubber conducts electricity.
All are conductors, because all materials conduct electricity.
Which of these is the correct match to form an ionic compound?
Which of the following pairs of elements is most likely to form an ionic compound?
magnesium and fluorine
manganese and iron
oxygen and chlorine
sodium and aluminum
What is the correct name for the compound MgI2
magnesium iodide
magnesium diiodide
monomagnesium diiodide
diphosphorus pentoxide, P2O5
ionic
Covalent
I can jump high in tennis shoes because they have rubber on the bottom.
The container is filled to the 350 mL mark.
Looking at the periodic table, when the halogens form an ion what charge do they have?
1-
1+
2-
2+
3-
When ionic compounds form, what is the total charge?
neutral
positive
negative
You have a compound that does NOT melt on the hot plate and is a GOOD conductor of electricity when dissolved in water. Which type of compound is it?
Ionic
Molecular (Covalent)
Metallic
In terms of element classification, why silver chloride is an ionic compound
Silver is a metal and chlorine is a nonmetal.
transfer of electrons
Who was Dimitri Ivanovich Mendeleev?
Periodic table inventor
Sandwich
A singer
An Astronomer
Which elements are colored red?
nonmetals
metals
metalloids
Which element is in period 1 group 18?
Helium
Hydrogen
Neon
Lead
Which element is in period 3 and group 14?
Silicon
Helium
Mercury
Neon
An element is
Made up of different types of atoms
Made up of the same type of atoms
none of the above
all of the above
Which of the following is NOT true about the periodic table?
Atomic mass is equal to the number of neutrons.
Elements listed by their (increasing) atomic mass.
Groups are the elements listed in columns.
Periods are the elements listed in rows of 8 (for most rows).
Which element is in GROUP 15 and PERIOD 3?
Phosphorus
Potassium
Arsenic
Vanadium
Students were asked to identify the location of elements in the periodic table based on clues printed on game cards.
Based on the data, which periodic table shows the correct location of the four elements?
What type of charge does this balloon have?
Positive
Negative
Neutral
What will happen if these balloons if they are placed together?
They will repel
They will attract
They will neither attract nor repel
What can cause you to feel a shock when you touch a metal doorknob after walking across carpet?
Magnetic attraction
Static electricity
Current electricity
What will happen if these balloons if they are placed together?
They will attract
They will repel
They will neither attract nor repel
The girl's hair is __________ to the balloon because her hair is positive and the balloon is negative.
Repelled
Neutral
Attracted
