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Unit 1 Section B Periodic Trends Flashcards | StudBud
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Unit 1 Section B Periodic Trends
Unit 1 Section B Periodic Trends
29 terms
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periodic table chemistry
Flashcards
29 cards
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Questions
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Answers
1
Which element is a semiconductor?
copper
silicon
calcium
sulfur
2
What is the name of Cu
2
S
copper(II) sulfide
copper(I) disulfide
copper(I) sulfide
copper(II) sulfuride
3
Two atoms with same number of protons but different number of neutrons are
isomers
protons
isotopes
ions
4
Name given to a positive ion
anion
positron
cation
oxide
5
Which of these is a metalloid?
As
K
Ca
Be
6
If an atom loses an electron, it becomes a
neutron
negative ion
positron
positive ion
7
Which of these elements is the most reactive nonmetal element?
B
Cl
Ga
I
8
Who developed the Periodic Table based on the properties of elements?
Dimitri Mendeleev
John Dalton
Fritz Haber
Niels Bohr
9
Horizontal rows of elements are called
families
columns
periods
series
10
Which symbol DOES NOT represent an ion?
F-
H
Mg2+
Ca2+
11
All atoms of the same element have the same
atomic number
neutron number
electron number
ion number
12
The most active metals are found
at the far left side
at the far right side
directly to the right of the 'step-like' line
directly to the left of the 'step-like' line
13
What is the number of neutrons in a carbon atom with a mass number of 14?
8
6
14
12
14
The repetition of similar properties is called
the reactivity law
the law of conservation
the law of chemical change
the periodic law
15
The Modern Periodic Table arranges elements according to:
atomic number
atomic mass
melting points
boiling points
16
Atoms, which have become ions, have lost or gained
protons
electrons
nucleii
neutrons
17
Vertical columns of elements in the periodic table are called
periods
rows
series
groups
18
The smallest unit of an element is
a proton
an electron
an atom
a molecule
19
When an atom of calcium becomes a calcium ion (Ca
2+
), the atom must
gain one neutron
lose two electrons
lose two protons
gain one electron
20
What is the charge of an ion with 8 protons and 10 electrons?
1-
2+
1+
2-
21
Which lists elements in the same period?
Cs, Ba, La
O, S, Te
N, O, cl
Al, Ga, B
22
What are the least reactive metals?
Cu, Ag, Au
Li, Na, K
Zn, Al, Fe
Be, Mg, Ca
23
Which metal will not react with oxygen?
Al (aluminum)
Fe (iron)
Au (gold)
Mg (magnesium)
24
What subatomic particle(s) can be found in an atom's nucleus?
protons only
protons & neutrons
protons & electrons
neutrons & electrons
25
The halogens are found in
group 13
group 4
group 17
group 3
26
The mass number of an atom is equal to
neutrons only
neutrons + protons
protons only
protons + electrons
27
What is the charge on the anion: CuF
2
?
-1
-2
+2
+1
28
What is the charge on the cation in the ionic compound Cu(NO
3
)
2
?
+1
+2
-1
-2
29
What charge do elements in the halogen group have when they form ions?
-1
+1
-2
+2
