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WorksheetsHMS Chemistry A Part 2 Review
Total questions: 23
Worksheet time: 16mins
Name
Class
Date
1.
What is the current model of the atom?
a)
Electron Cloud Model
b)
Bohr Model
c)
Proton Cloud Model
d)
Electron Dot Model
2.
How did Dmitri Mendeleev organize the Periodic Table of Elements?
a)
By increasing atomic number
b)
By increasing atomic mass
c)
By increasing mass number
d)
By increasing weight
3.
How is the current Periodic Table of Elements organized?
a)
By increasing atomic number
b)
By increasing atomic mass
c)
By increasing mass number
d)
By increasing weight
4.
To determine atomic mass, you must find the...
a)
average mass of protons of an element found in nature
b)
average mass of isotopes of an element found in nature
c)
average mass of electrons of an element found in nature
d)
average mass of neutrons of an element found in nature
5.
When a neutron becomes unstable, it splits into a proton and an electron. This high energy electron leaves the atom in the form of a(n) __________.
a)
alpha particle
b)
beta particle
c)
greenish glow
d)
stable particle
6.
When radioactive decay occurs, sometimes a group of 2 protons and 2 neutrons are shot out of the nucleus in the form of a(n) __________________
a)
alpha particle
b)
beta particle
c)
greenish glow
d)
stable particle
7.
What makes this isotope radioactive?
a)
Its nucleus is "unstable"
b)
Its nucleus is "stable"
8.
All of the following are signs of radioactive decay except...
a)
giving off an alpha particle
b)
giving off a beta particle
c)
giving off gamma rays (form of radiation)
d)
maintaining a "stable" nucleus
9.
What is the mass number?
a)
35
b)
79.904
c)
80
d)
45
10.
What is the atomic number?
a)
35
b)
79.904
c)
80
d)
45
11.
What is the atomic mass?
a)
35
b)
79.904
c)
80
d)
45
12.
How many protons are in a Chlorine atom?
a)
17
b)
35.45
c)
35
d)
18
13.
How many electrons are in a Chlorine atom?
a)
17
b)
35.45
c)
35
d)
18
14.
How many neutrons are in a Chlorine atom?
a)
17
b)
35.45
c)
35
d)
18
15.
The elements in the ORANGE-shaded area are ___________.
a)
metals
b)
non-metals
c)
metalloids
d)
non-metalloids
16.
The elements in the GREEN-shaded area are ___________.
a)
metals
b)
non-metals
c)
metalloids
d)
non-metalloids
17.
The elements in the PURPLE-shaded area are ___________.
a)
metals
b)
non-metals
c)
metalloids
d)
non-metalloids
18.
In group 17, what is the most reactive non-metal?
a)
Fluorine (F)
b)
Chlorine (Cl)
c)
Bromine (Br)
d)
Iodine (I)
19.
In group 1, what is the most reactive metal?
a)
Lithium (Li)
b)
Potassium (K)
c)
Radium (Ra)
d)
Francium (Fr)
20.
In period 4, what is the most reactive metal?
a)
Potassium (K)
b)
Calcium (Ca)
c)
Bromine (Br)
d)
Titanium (Ti)
21.
In period 4, what is the most reactive non-metal?
a)
Iodine (I)
b)
Selenium (Se)
c)
Calcium (Ca)
d)
Potassium (K)
22.
Which of the following element combinations is the least reactive?
a)
Francium (Fr) + Fluorine (F)
b)
Caesium (Cs) + Oxygen (O)
c)
Radium (Ra) + Sulfur (S)
d)
Sodium (Na) + Iodine (I)
23.
Which of the following element combinations is the most reactive?
a)
Francium (Fr) + Chlorine (Cl)
b)
Radium (Ra) + Bromine (Br)
c)
Sodium (Na) + Selenium (Se)
d)
Lithium (Li) + Iodine (I)
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