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Periodic Table Review #2 Flashcards | StudBud
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Periodic Table Review #2
Periodic Table Review #2
25 terms
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review of elements and periodic table structure #periodictable
Flashcards
25 cards
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Questions
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Answers
1
Which group (classification) contains the most elements?
non-metals
metalloids
metals
transition elements
2
What is the outermost electron cloud shell (that contains electrons) called?
nucleus
electron shell
negative shell
valence shell
3
Do you add of subtract while counting atoms
Subtract
Both
Add
Neither
4
Which of the following statements about transition metals is true?
They are so soft they can be cut with a knife
They are the most reactive of all types of metals
They are never found uncombined in nature
They include metals such as gold, silver and copper
5
What information in the periodic table indicates the number of protons in an atom?
the position of the element in the column
the element's atomic mass
the element's atomic number
the element's chemical symbol
6
Sodium has 11 protons, 12 neutrons and 11 electrons. What is it's atomic number?
11
23
12
22
7
Fluorine, chlorine, bromine and iodine are part of a family called _____.
noble gases
alkali metals
metalloids
halogens
8
In an atom, the number of protons equals the number of ____.
nuclei
electrons
isotopes
neutrons
9
If an atom has 15 electrons, how many protons will it have?
20
30
15
0
10
Counting Atoms: 3 NH
4
(NO
2
)
2
9 nitrogens
4 oxygens
2 oxygens
3 nitrogens
11
Sodium has 11 protons, 12 neutrons and 11 electrons. What is it's mass number?
22
12
11
23
12
Counting Atoms 3H
²
O(C
³
Ca)
³
H = 6. O = 3, C = 18, Ca = 9
H = 6, O = 3, C = 27 Ca = 9
H = 6, O = 2, C = 18, Ca = 6
H = 6, O = 3 C = 6 C = 9, Ca = 6
13
In the periodic table, the most reactive elements are found in _____.
Group 1, the first column on left
Periods 6 & 7 at the bottom
Period 1, the first row on the top
Groups 13-16 in the center
14
Which particles in atoms have a negative electric charge?
neutrons
protons
electrons
nucleus
15
The elements that do not ordinarily form compounds are ______.
metals
noble gases
halogens
elements in the carbon family
16
Which group of elements share characteristics with both metals and non-metals?
metalloids
lanthanides
halogens
salts
17
Which of the following statements about metals is true?
Metals need to be stored in sealed containers for safety
Metals show a wide range of chemical properties
Metals do not react with oxygen
Metals are highly reactive
18
Counting atoms: CH
4
C=4 H=4
C=3 H=8
C=1 H=4
C=2 H=4
19
Counting atoms: BaCl
2
Ba=1 Cl=2
Ba=5 Cl=6
Ba=2 Cl=5
Ba=1 Cl=3
20
Which of the following is NOT a property common to non-metals?
conduct electricity easily
reactive with other elements
brittle
dull
21
A material is ductile if it _____.
can be hammered or rolled into flat sheets
is a mixture of metal with at least one other element
can be pulled or drawn into a long wire
can transfer heat or electricity to another metal
22
How does the reactivity of metals change as you move from left to right on the table?
Increases Reactivity
Doesn't change
Decreases reactivity
23
How does the atomic mass of the elements change as you move from top to bottom on the table?
Mass increases
Mass decreases
Stays the same
24
What is unique about noble gases?
form salts
Don't form compounds
exist as solid elements
Are non-reactive
25
The elements in a column of the periodic table ____.
have the same atomic mass
are in the same period
have similar properties
have similar chemical symbols
