WorksheetsHon Chem Unit 2 Ch 4 & 6 Isotopes, Periodic Table
Total questions: 40
Worksheet time: 31mins
Name
Class
Date
1.
The law of conservation of mass states that:
a)
Matter can be created and destroyed.
b)
Matter can be created but not destroyed.
c)
The products of a reaction always have a greater mass than the reactants.
d)
The products of a reaction must have the same mass as the reactants.
2.
Dalton’s theory also conveniently explained what?
a)
the electron
b)
law of conservation of mass
c)
the nucleus
d)
law of Democritus
3.
Atoms are mostly ____.
a)
postive
b)
solid spheres
c)
negative
d)
empty space
4.
An unknown element has 19 protons, 19 electrons, and 3 isotopes with 20, 21 and 22 neutrons. What is the element’s atomic number?
a)
38
b)
19
c)
40
d)
unable to determine
5.
Rutherford's gold foil experiment confirmed that an atom has
a)
a very dense nucleus.
b)
positive charges spread throughout.
c)
no negative particles.
d)
neutrons.
6.
How many neutrons does uranium-235 have?
a)
238
b)
92
c)
146
d)
143
7.
What are the two fundamental subatomic particles found in the nucleus?
a)
proton and electron
b)
proton and neutron
c)
neutron and electron
d)
neutron and positron
8.
Elements with the same number of protons and differing numbers of neutrons are known as what?
a)
isotopes
b)
radioactive
c)
abundant
d)
ions
9.
In the modern periodic table elements are arranged by:
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
10.
Each column in the periodic table is called a
a)
period
b)
group
c)
cluster
d)
unit
11.
The atomic number tells you what?
a)
number of electrons
b)
number of protons
c)
number of neutrons
d)
both electrons and protons in an atom.
12.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
13.
Which element is not a metal?
a)
H
b)
Re
c)
Al
d)
B
14.
The atoms along the staircase are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
15.
Calcium is most like which of the following?
a)
Barium
b)
Potassium
c)
Cesium
d)
Nitrogen
16.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
17.
The blue elements are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
18.
If a material can easily be drawn into the shape of a wire, it is
a)
Ductile
b)
Magnetic
c)
Malleable
d)
Reactive
19.
Beryllium is in group number______.
a)
Group 2
b)
Group 3
c)
Group 4
d)
Group 7
20.
The period for Bromine is ___________.
a)
3
b)
2
c)
4
21.
How many neutrons does an atom of the isotope Oxygen-16 have?
a)
8
b)
16
c)
32
d)
4
22.
In a correctly written symbol what would be located in the "A" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons
d)
mass number
23.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
24.
An element has two naturally occurring isotopes. One is 10.013 amu and is 19.9% abundant. The other is 11.01 amu and is 80.1% abundant. What is the average atomic mass? What element is it?
a)
9.012, Beryllium
b)
12.011, Carbon
c)
6.941, Lithium
d)
10.812, Boron
25.
Calculate the average atomic mass of silver.
a)
106.38649amu
b)
111.91896amu
c)
107.8677amu
d)
121
26.
In a correctly written symbol what would be located in the "Z" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons
d)
mass number
27.
In the modern periodic table, elements are arranged by:
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
28.
If an atom had the same properties as fluorine (F), it would probably be located in
a)
period 1.
b)
period 2.
c)
group 2.
d)
group 17.
29.
Each column in the periodic table is called a
a)
period
b)
group
c)
cluster
d)
unit
30.
The periodic table has __ periods.
a)
18
b)
8
c)
2
d)
7
31.
Which is a halogen?
a)
Fluorine
b)
Carbon
c)
Helium
d)
Lithium
32.
Which family of metals is most reactive?
a)
Alkali Metals (Group 1)
b)
Halogens (Group 17)
c)
Halogens (Group 15)
d)
Alkali Metals (Group 2)
33.
Which of the following is the most reactive group of non-metals?
a)
Alkali
b)
Alkali Earth
c)
Halogen
d)
Noble Gas
34.
Which of the following is the atomic number of an alkali metal?
a)
31
b)
20
c)
18
d)
19
35.
Metals tend to _______ electrons when they bond forming a ___________ ion.
a)
gain, positive
b)
gain, negative
c)
lose, positive
d)
lose, negative
36.
Nonmetals tend to _______ electrons when they bond forming a ___________ ion.
a)
gain, positive
b)
gain, negative
c)
lose, positive
d)
lose, negative
37.
How many significant figures will be in the answer to the following question:
7.62 x 6.98 x 3.2645
7.62 x 6.98 x 3.2645
a)
1
b)
2
c)
3
d)
4
38.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
39.
Round 1009 to three sig figs
a)
100
b)
101
c)
1010
d)
1000
40.
How many Significant Figures in the number below?
4.56 x 103
4.56 x 103
a)
5
b)
4
c)
6
d)
3
100 %
