WorksheetsMilestones Review: Sem 2
Total questions: 45
Worksheet time: 43mins
Name
Class
Date
1.
Phosphorous trichloride
a)
PCl3
b)
P3Cl
c)
P3Cl3
d)
PCl
2.
Disulfur trioxide
a)
S3O2
b)
SO
c)
S2O3
d)
S2O
3.
A binary covalent bond exists between
a)
2 metals
b)
1 metal and 1 nonmetal
c)
2 nonmetals
d)
Any 2 elements
4.
What is the formula for magnesium chloride?
a)
MgCl
b)
Mg2Cl
c)
MgCl2
d)
Mg(ClO3)2
5.
The chemical formula for an ionic compound of potassium and oxygen is
a)
KO.
b)
K2O.
c)
K2O2.
d)
KO2.
6.
Name this compound:
NaBr
a)
Sodium monobromide
b)
Sodium bromide
c)
Monosodium monobromide
d)
Sodium bromate
7.
Which of these compounds is ionic?
a)
Carbon dioxide
b)
Dinitrogen trioxide
c)
Silicon tetrachloride
d)
Lithium bromide
8.
Which of these is covalent?
a)
NaCl
b)
Ag(NO3)2
c)
CO2
d)
AlCl3
9.
Which element has 12 neutrons ?
a)
Magnesium
b)
Sodium
c)
Silicon
d)
Magnesium & Sodium
10.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
11.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
12.
How many neutrons in C-14?
a)
6
b)
7
c)
14
d)
8
13.
How many neutrons does an atom of the isotope Neon-22 have?
a)
12
b)
10
c)
22
d)
20
14.
What is the name of this element?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
15.
What is the mass number of this atom?
a)
1
b)
3
c)
4
d)
7
16.
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
_Al +_HCl --> _H2 +_AlCl3
a)
2, 6, 3, 2
b)
it is already balanced
c)
4, 12, 3, 4
d)
2, 1, 4, 5
17.
Balance this equation.
_CF4 + _Br2 -- _CBr4 + _F2
_CF4 + _Br2 -- _CBr4 + _F2
a)
2,1,2,1
b)
1,2,2,1
c)
1,2,1,2
d)
2,2,2,2
18.
Balance this equation
_N2 + _H2 --> _NH3
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
19.
What kind of reaction is this?
2H2 + O2 --> 2H2O
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
20.
What type of reaction occurs between an element and a compound?
Zn + 2HCl --> ZnCl2 + H2
Zn + 2HCl --> ZnCl2 + H2
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
21.
The concentration of a mixture can be increased in which of the following ways?
a)
Heating the mixture
b)
Adding more water “solvent”
c)
Adding more powder “solute”
d)
Stirring the mixture
22.
In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?
a)
stir the powder in the liquid
b)
freeze the mixture
c)
add more powder to the liquid
d)
store the mixture in a dark place
23.
A solution that is considered dilute would be....
a)
Dark in color
b)
Have a strong scent
c)
Have a large amount of solute
d)
Have a small amount of solute
24.
Kool-Aid - Powder, sugar, and water
Identify the solvent
Identify the solvent
a)
water
b)
powder
c)
sugar
d)
powder and sugar
25.
NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?
a)
Acid
b)
Base
c)
Neither (Neutral)
26.
Which of the following is a pH for a strong base?
a)
1
b)
8
c)
7
d)
13
27.
What is another name for a basic solution?
a)
Arrhenius
b)
Lewis
c)
alkenes
d)
alkaline
28.
You notice your car battery has leaked acid on the ground. What should you do?
a)
Pour water on the spill.
b)
Call the police.
c)
Use baking soda on the spill to neutralize it.
d)
Use vinegar on the spill to lower the pH.
29.
conduct electricity
a)
strong acids and bases
b)
acids only
c)
bases only
d)
all solutions
30.
How many valence electrons does Carbon have?
a)
4
b)
12
c)
6
d)
14
31.
What is oxidation number of Ca in CaCl2 ?
a)
-1
b)
-2
c)
+1
d)
+2
32.
What is the oxidation number for Flourine (F)?
a)
+1
b)
-1
c)
17
d)
7
33.
You are given a small beaker of solution at room temp. You add a bit of solute to the solution and it dissolves. The solution was:
a)
saturated
b)
unsaturated
c)
concentrated
d)
warm
34.
This solution would be considered
a)
Unsaturated
b)
Supersaturated
c)
Saturated
d)
Undefined
35.
How many grams of K2Cr2O7, are soluble in 100 g of water at 95 ºC?
a)
83 grams
b)
75 grams
c)
40 grams
d)
12 grams
36.
Which solute is the most soluble at 10 ⁰C?
a)
KI
b)
KClO3
c)
NH4Cl
d)
NH3
37.
When 20 grams of KNO3 is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:
a)
supersaturated
b)
saturated
c)
unsaturated
38.
What type of radioactive decay is shown here?
a)
Alpha decay
b)
Beta decay
c)
Gamma decay
39.
Which of the following statements is a characteristic of gamma radiation?
a)
it has a positive charge B
b)
It is an electromagnetic wave
c)
It has a higher ionizing power than alpha radiation
d)
It has a lower penetrating power than beta radiation
40.
The mass of a radioactive element is 10 g and its half-life is 6 days. Which of the following statements about the mass of the radioactive element is true?
a)
6 days earlier, the mass is 20 g
b)
12 days earlier, the mass is 80 g
c)
6 days later, the mass is 2.5 g
d)
12 days later, the mass is 5.0 g
41.
The half-life of arsenic is 18 days. A sample contains certain amount of arsenic. After 72 days, only 10 g of the arsenic still remains. What is the initial amount of arsenic
a)
160 g
b)
90 g
c)
80 g
d)
72 g
42.
What makes something radioactive?
a)
elements with an atomic number above 81
b)
an unstable nucleus
c)
contaminated sewage
d)
It decays over time
43.
Complete the nuclear equation and determine the type of decay that is occurring in this reaction.
a)
alpha
b)
beta
c)
gamma
d)
none
44.
This is an example of...
a)
Fission reaction
b)
Fusion reaction
c)
Decomposition reaction
d)
Decay
45.
In order of most to least penetrating radiation we have
a)
Alpha , Beta, Gamma
b)
Beta , Gamma , Alpha
c)
Gamma, Beta, Alpha
d)
Gamma, Alpha, Beta
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