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Duplicate of Elements & the Periodic Table Flashcards | StudBud
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Duplicate of Elements & the Periodic Table
Duplicate of Elements & the Periodic Table
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review of elements and periodic table structure
Flashcards
35 cards
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Practice quiz
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Questions
35
Answers
1
Hg is the chemical symbol of which element?
Helium
Hegrenium
Mercury
Iron
2
What does a period on the periodic table show?
How many valence electrons an atom has.
How much an atom weighs.
How many electrons an atom has.
How many energy levels an atom has.
3
Mendeleev created the first periodic table by arranging the elements in order of _____.
increasing atomic mass
increasing melting points and densities
decreasing atomic mass
increasing atomic number
4
What is a valence electron?
Outermost electron
Negatively charged electron
Neutron
Positively charged electron
5
What is an atom?
A type of energy
The basic unit of matter
The basic unit of energy
A type of matter
6
What is the chemical symbol for Potassium?
K
Ph
Na
Po
7
What are quarks?
the energy levels for elements
particles that make up electrons
particles that make up protons and neutrons
ducks that can't quack properly
8
Which group of elements share characteristics with both metals and non-metals?
metalloids
halogens
salts
lanthanides
9
Sodium has 11 protons, 12 neutrons and 11 electrons. What is it's mass number?
23
12
22
11
10
What is an isotope?
an atom with different numbers of neutrons and electrons
an atom with a different number of electrons than protons
an atom with a different number of protons than its neutrons
an atom with a different number of neutrons than its protons
11
Which particles in atoms have a negative electric charge?
protons
electrons
nucleus
neutrons
12
What is Sodium's chemical symbol
So
Sm
Na
Ti
13
The chemical symbol for Iron is
Ir
fe
Fe
FE
14
In the periodic table, the most reactive elements are found in _____.
Group 1, the first column on left
Period 1, the first row on the top
Groups 13-16 in the center
Periods 6 & 7 at the bottom
15
The elements that do not ordinarily form compounds are ______.
halogens
elements in the carbon family
metals
noble gases
16
What is the Electron Cloud?
It is the area inside the nucleus of an atom.
It is the neutrally charged particle of an atom.
It is the positively charged particle of an atom.
It is the area outside the nucleus of an atom.
17
What natural event provides enough energy to create elements through nuclear fusion?
a plasma
a particle accelerator
a supernova
a nebula
18
In an atom, the number of protons equals the number of ____.
neutrons
electrons
isotopes
nuclei
19
In an atom, the number of protons equals the number of ____.
neutrons
nuclei
electrons
isotopes
20
How many Quarks are there
3
6
1
10
21
What information in the periodic table indicates the number of protons in an atom?
the element's atomic mass
the position of the element in the column
the element's chemical symbol
the element's atomic number
22
What is a metalloid?
Has properties of an alien species
They have properties of both metals and nonmetals
They have properties more similar to nonmetals than metals
They have properties more similar to metals than nonmetals
23
The sun is made of mostly what element?
oxygen
carbon
hydrogen
iron
24
An electron dot diagram.....
is a bar graph
uses dots to show the number of neutrons
shows the name of the element
uses the symbol for an element and dots for # of electrons
25
How does the reactivity of elements change as you move from left to right on the table?
Decreases reactivity
Increases Reactivity
Doesn't change
26
What is the elemental symbol for Gold
Au
Pb
Zn
Cu
27
What is a valence electron?
The electrons on the outermost shell
The electrons on the second layer
All of the above
The electrons on the first layer
28
Which of the following scientists inferred that an atom's positive charge is in the nucleus?
John Dalton
Niels Bohr
J.J. Thompson
Ernest Rutherford
29
Sodium has 11 protons, 12 neutrons and 11 electrons. What is it's atomic number?
23
22
12
11
30
Which group contains the most elements?
metalloids
metals
transition elements
non-metals
31
What is Helium's chemical symbol
Ag
He
H
Nd
32
How does the atomic mass of the elements change as you move from top to bottom on the table?
Stays the same
Mass increases
Mass decreases
33
How did chemists change Mendeleev's periodic table?
They used atomic mass instead of atomic number.
The used atomic number instead of atomic mass.
The included chemical properties like bonding power.
They included physical properties like density.
34
If an atom has 15 electrons, how many protons will it have?
20
0
15
30
35
The elements in a group of the periodic table ____.
have similar properties
have similar chemical symbols
are in the same period
have the same atomic mass
