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WorksheetsChemistry Regent - Jan 2017 Q1-10
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Which statement describes the location of two types of subatomic particles in a helium atom?
a)
Protons and neutrons are located in the nucleus.
b)
Protons and neutrons are located outside the nucleus.
c)
Protons and electrons are located in the nucleus.
d)
Protons and neutrons are located outside the nucleus.
2.
An atom that contains six protons, six neutrons, and six electrons has a mass of approximately
a)
12 u
b)
12 g
c)
18 u
d)
18 g
3.
Which term identifies the most probable location of an electron in the wave-mechanical model of the atom?
a)
anode
b)
orbital
c)
nucleus
d)
cathode
4.
Which element has atoms in the ground state with the greatest number of valence electrons?
a)
tin
b)
sulfur
c)
arsenic
d)
fluorine
5.
Which group on the Periodic Table has two elements that exist as gases at STP?
a)
Group 1
b)
Group 2
c)
Group 16
d)
Group 17
6.
Which list of elements contains a metal, a metalloid, and a nonmetal?
a)
Ag, Si, I2
b)
Ge, As, Ne
c)
K, Cu, Br2
d)
S, Br2, Ar
7.
What is the charge of the nucleus of a copper atom?
a)
+1
b)
+2
c)
+29
d)
+64
8.
At STP, O2(g) and O3(g) have different properties because O3(g) has
a)
more dense nuclei than in O2(g)
b)
more protons per atom than in O2(g)
c)
molecules with a different structure than in O2(g)
d)
molecules with fewer covalent bonds than in O2(g)
9.
A compound is a substance composed of two or more elements that are
a)
physically mixed in a fixed proportion
b)
physically mixed in a variable proportion
c)
Chemically combined in a fixed proportion
d)
Chemically combined in a variable proportion
10.
Which element has the highest boiling point at standard pressure?
a)
Mg
b)
Na
c)
Rb
d)
Sr
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