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WorksheetsLet's Review! 2nd Semester
Total questions: 62
Worksheet time: 3hrs 4mins
How many protons, electrons, and neutrons in an atom of rubidium (Rb, #37)?
85 p, 85 e, 37 n
37 p, 37 e, 37 n
37 p, 37 e, 48 n
85 p, 85 e, 48 n
What happens when a lead atom becomes a lead (IV) ion?
gains 4 electrons
loses 4 electrons
gains 4 protons
loses 4 protons
nothing changes
What happens to the solubility of most solutes as the temperature increases?
it increases
it decreases
it stays the same
it can't be predicted
A solute whose water solution conducts electricity is called a(n)
electrolyte
non electrolyte
molecular compound
non conductor
The compound most likely present in this solution is...
C6H12O6
KCl
H2O
CO2
Which substance is MOST soluble at 0 ºC?
KCI
NaNO3
NaCl
Ce2(SO4)3
You can make a solute dissolve more quickly in a solvent by
adding more solute.
adding ice.
heating the solvent.
removing some solvent.
When 30 grams of potassium chlorate, KClO3, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:
supersaturated
saturated
unsaturated
How many grams of KCl can dissolve in 300 mL water at 50°C?
42
50
126 g
cannot be determined
which is supersaturated at 60 g and 60 °C
KClO3
KNO3
NaNO3
cannot be determined
At a constant temperature, the volume decreases. What happens to the pressure?
increases
decreases
stays the same
What are the values for STP?
0 K and 1 atmosphere
0ºC and 1 atmosphere
32ºF and 1 atmosphere
100ºC and 1 atmosphere
Which of the following explains the change in pressure when volume increases?
As the volume increases, the particles slow down, causing less collisions and less pressure.
As the volume increases, the particles speed up, causing more collisions and more pressure.
As the volume increases, the particles have more space to move and collide less with the walls , causing pressure to decrease.
As the volume increases, the particles have more space to move and collide less with the walls , causing pressure to increase.
A balloon filled with 0.500 L of air at 1 atm is submerged in the water to a depth that produces a pressure of 3.25 atm. What is the volume of the balloon at this depth?
1.63 L
0.154 L
6.50 L
0.615 L
Suppose you had a balloon containing 1 mole of helium at STP and a balloon containing 1 mole of oxygen at STP. Which statement is TRUE?
The balloons will have the same volume.
The balloons will have the same mass.
Both A and B are true.
not enough information
What is the [OH-] if the [H+] is 1.0 x 10-3M?
1.0 x 10-3 M
6.02 x 10-23 M
1.0 x 10-14 M
1.0 x 10-11 M
What is the [OH-] if the pH is 4.9?
7.94 x 10-10 M
1.0 x 10-4 M
7.94 x 10-14 M
4.9 x 10-10 M
1.26 x 10-5 M
Complete the following reaction (unbalanced):
HCl + Mg(OH)2 -->
MgCl2 + H2O
Mg +H2O
MgCl2 + H2
MgCl2 + H2O + CO2
What is the molarity of a 30. mL HCl which is neutralized by 48 mL of 0.10 M NaOH?
HCl + NaOH --> H2O + NaCl
0.16 M
6.25 M
0.063 M
The table shows the pH of several solutions. Which solution has the greatest concentration (amount) of H+ ions?
vinegar
milk
water
bleach
Do acids and bases conduct electricity?
Only acids conduct electricity
Only bases conduct electricity
Bases and acids conduct electricity
Neither conduct electricity
Which of the following is a neutralization reaction?
2Na + Cl2 → 2NaCl
CH4 + 2O2 → CO2 + 2H2O
HCl + KOH → KCl + H2O
CaCO3 → CO2 + CaO
If the [OH-] of a solution is 2.7 x 10-4 mol/L the pOH of the solution is
10.44
3.56
1.00
-4.43
2.7
Where is the neutron found in the atom?
neutrons don't exist in an atom
in the nucleus
outside the nucleus
none of the above
The atomic # tells us the # of ____________________ in an atom.
protons
electrons
neutrons
Cassietrons
Bromine has how many Neutrons?
35
80
45
8
Mg3N2
Magnesium nitride
Magnesium (II) nitride
Trimagnesium dinitrogen
Manganese nitride
The name of Cu₃N₂ is
copper(III) nitride
copper(II) nitride
copper nitride
tricopper dinitride
Mg belongs to group 2. What is the family name of this element?
Alkali metal
Alkaline earth metal
Halogens
Noble gases
Li belongs to group 1. What is its family name?
Alkaline earth metal
Alkali metal
halogens
Noble gases
The family name for elements that belong to group 18:
noble gases
alkali metals
alkaline earth metals
halogens
Family name for elements that belong to group 17:
halogens
noble gases
alkali metals
alkaline earth metals
Which elements are found on the left to middle of The Periodic Table?
Metals
Nonmetals
Metalloids
Gases
Metal
Nonmetal
Metalloid
USE THE PERIODIC TABLE
How many valence electrons does carbon have?
4
12
6
14
USE THE PERIODIC TABLE
How many valence electrons does Phosphorus have?
31
5
15
4
Which of the following ions have a +2 charge?
Hydrogen (H)
Magnesium (Mg)
Calcium (Ca)
Lithium (Li)
Atoms in the oxygen family will ______ to form a -2 charge
gain 2 electrons
lose 2 electrons
gain 2 protons
lose 2 protons
lose 2 neutrons
Identify the product(s) in the following chemical reaction:
Chromium oxide + Carbon → Chromium + Carbon monoxide
Chromium and carbon.
Chromium and carbon monoxide.
Chromium and carbon dioxide.
Chromium oxide and carbon.
Ex: 2H2 + O2 --> 2H2O
Which of the following compounds will not dissolve in water?
NaCl
PbCl2
Mg(NO3)2
Na2SO4
KClO3 --> KCl + O2
What is the molar mass of C2H4O2?
40.04 g/mol
50.05 g/mol
60.06 g/mol
68.08 g/mol
What would be the mass of 1.5mol H2O
12 g
27 g
32 g
40. g
How many moles of carbon atoms are there in 5.0 g of carbon?
2.4 mol
17 mol
0.42 mol
7 mol
How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?
1074 mol
0.0687 mol
1.07 mol
14.6 mol
68.7 mol
What is the molarity of a 0.50 L sample of a solution that contains 60.0 g of sodium hydroxide (NaOH)
0.80 M
1.5 M
3.0 M
6.0 M
What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO3 to a volume of 250. mL?
15.9 M
0.636 M
0.642 M
1.59 M
How many mL of 10.8M HCl are required to make 100.0 mL of 3.00M acid?
27.8 mL
0.324 mL
2.78 mL
360. mL
