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Elements & the Periodic Table Flashcards | StudBud
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Elements & the Periodic Table
Elements & the Periodic Table
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review of elements and periodic table structure
Flashcards
16 cards
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Practice quiz
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Questions
16
Answers
1
Sodium has 11 protons, 12 neutrons and 11 electrons. What is it's atomic number?
11
23
22
12
2
What information in the periodic table indicates the number of protons in an atom?
the element's chemical symbol
the position of the element in the column
the element's atomic mass
the element's atomic number
3
In the periodic table, the most reactive elements are found in _____.
Periods 6 & 7 at the bottom
Group 1, the first column on left
Groups 13-16 in the center
Period 1, the first row on the top
4
If a neutral atom has 15 electrons, how many protons will it have?
0
30
20
15
5
The elements that do not ordinarily form compounds are ______.
halogens
metals
elements in the carbon family
noble gases
6
Which group of elements share characteristics with both metals and non-metals?
lanthanides
halogens
metalloids
salts
7
Which particles in atoms have a negative electric charge?
neutrons
nucleus
protons
electrons
8
In an atom, the number of protons equals the number of ____.
nuclei
neutrons
isotopes
electrons
9
What charge would an atom have if it loses one electron?
-1
+1
Neutral
10
You're told an atom is in group 17, period 2. What element is it?
Fluorine
Chlorine
Argon
Oxygen
11
Which category contains the most elements?
non-metals
metalloids
metals
transition elements
12
What is unique about noble gases?
exist as solid elements
They're metallic
Are non-reactive
form salts
13
The elements in a group of the periodic table ____.
are in the same period
have similar chemical symbols
have similar properties
have the same atomic mass
14
Sodium has 11 protons, 12 neutrons and 11 electrons. What is it's mass number?
11
23
12
22
15
What reactivity level does an atom with one valence electron have?
Medium reactivity
Low reactivity
High reactivity
16
Which of these properties doesn't apply to non-metals?
brittle
reactive with other elements
dull
conduct electricity easily
