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WorksheetsChemical Element
Total questions: 15
Worksheet time: 12mins
Name
Class
Date
1.
which ion has the same electronic configuration as Cl-?
a)
F-
b)
P+
c)
Sc3+
d)
Si4+
2.
the substance that can react with NaOH or H2SO4 is....
a)
Mg(OH)2
b)
Al(OH)3
c)
Si(OH)4
3.
redox reaction are common in the chemistry of group 7A.
which statement is correct?
which statement is correct?
a)
Br- ions will reduce Cl2 but not I2
b)
Cl2 will oxidise Br- ions but not I- ions
c)
F2 is the weakest oxidising agent out of F2, Cl2, Br2, or I2
4.
Does the graph correctly shows relative electronegativity plotted against relative atomic radius for the elements Na, Mg, Al, and Si?
a)
Correct
b)
False
5.
Does the graph correctly shows relative electronegativity plotted against relative atomic radius for the elements Na, Mg, Al, and Si?
a)
true
b)
false
6.
MgCl2 and SiCl4 are separately added into water. what are the approximately pH values of the solutions formed?
a)
MgCl2 = 0 - 3
SiCl4 = 0 - 3
SiCl4 = 0 - 3
b)
MgCl2 = 0 - 3
SiCl4 = 6 -7
SiCl4 = 6 -7
c)
MgCl2 = 6 - 7
SiCl4 = 0 - 3
SiCl4 = 0 - 3
d)
MgCl2 = 6 -7
SiCl4 = 6 - 7
SiCl4 = 6 - 7
7.
Y is a metalloid in period 3. what is Y element?
a)
Al
b)
Si
c)
Ar
d)
S
8.
All of the substances of transition elements have a certain colour.
the statement above is true or false...
the statement above is true or false...
a)
true
b)
false
9.
which elements below included in transition elements?
a)
Na
b)
Al
c)
Fe
d)
Si
10.
from the test of the flame color of metal compounds, the yellow color will be produced by....
a)
Sr
b)
Cu
c)
K
d)
Na
11.
Below are the properties of transition metals, except....
a)
they have colored compounds
b)
they are very reactive
c)
they have relatively high melting and boiling points
d)
they have various oxidation numbers or states
12.
among the substances below, the most acidic substance is...
a)
H2SiO3
b)
H3PO4
c)
HClO4
d)
H2SO4
13.
in general, transition metals are paramagnetic, except Zn this is because....
a)
the outermost electrons are in a d subshell
b)
all transition elements are metallic
c)
there are unpaired electrons in a d subshell
d)
orbitals in a d subshell are fully occupied with electrons
14.
the element in the transition metals with the most various oxidation number is...
a)
Cr
b)
Mn
c)
Fe
d)
Co
15.
the most oxidizing agent in period 3 is...
a)
Cl
b)
Na
c)
Al
d)
S
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