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Atoms and the Periodic Table
Atoms and the Periodic Table
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Atomic structure, organization of the periodic table
Flashcards
45 cards
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Practice quiz
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Questions
45
Answers
1
How many electrons does the 1st energy level hold?
8
4
2
6
2
Cations have what type of charge?
negative
neutral
positive
what?
3
How many protons are in one calcium atom?
1
20
40
2
4
Which has the largest atomic size?
C
N
Be
Fr
5
The element has 13 protons and is a silver, shiny metal. What is it?
boron
clorine
nitrogen
aluminum
6
Isotopes are atoms that have the same number of protons, but a different number of...
electrons
neutrons
charges
protons
7
What does the number 28.086 refer to?
The number of neutrons in the element silicon
The atomic mass of the element silicon
The atomic number of the element silicon
8
Which part of the atom is most of the mass found?
Elctron cloud
nucleus
outside the nucleus
9
How many valence elctrons are in group 2A?
2
6
4
8
10
What group of elements is known as the alkali metals?
Group 8
Group 1
Group 2
Group 7
11
How many electrons are in one atom of oxygen?
16
1
15.99
8
12
The elements to the left side of the periodic table are known as the
non-metals
metalloids
metals
13
What did Bohr discover about the atom?
Proton
Orbit of electron
Neutron
Nucleus
14
How many valence elctrons does Sulfur have?
6
5
7
8
15
What is the number of protons in one atom of silicon?
2
14
28
1
16
Bohr discovered..
discovered the electron
showed electrons moving in a circular pattern
atom is mostly empty space, electrons orbit around the nucleus randomly.
matter is made of atoms
17
What is the atomic mass of magnesium?
24.3
2
12
25
18
Characteristics of a metal
does not conduct electricity, malleable, ductile
bad conductor, ductile, brittle
good conductor, dull, malleable
good conductor, malleable, shiny
19
The number 8 in the picture refers to
The number of neutrons in the element oxygen
The number of valence electrons in the element oxygen
The atomic number of the element oxygen
The atomic mass of oxygen
20
How many valence electrons does an atom need to be stable?
8
1
6
4
21
What group of elements is known as the Noble Gases?
Group 1
Group 2
Group 17
Group 8
22
What do the elements of group 8 have in common?
They are all gases
They are all in compounds
They are all metals
They are all solids
23
What is the number of valence electrons in an atom of Al?
8
10
3
13
24
What is the the correct number of valence electrons for the element krypton, Kr.
6
4
7
8
25
Which of these elements are an alkali metal?
Lithium
Mercury
Copper
Silicon
26
How is the Periodic Table arranged today?
by the atomic mass
in alphabetical order
in the order they were found
by the atomic number
27
Which of these elements are considered an isotope?
Carbon
Boron
Carbon -14
Oxygen
28
What is an electron's charge?
negative
neutral
positive
29
What is the atomic number of sodium?
23
11
22.99
30
How many neutrons does boron have?
5
11
10
6
31
How many neutrons does boron have?
10
5
6
11
32
How many neutrons does magnesium have?
13
24
12
24.305
33
The element is dull, brittle and non-conductive....what is it?
metal
non-metal
proton
metalloid
34
The metals are on the ______ side of the periodic table.
top
right
left
middle
35
What is the charge on a proton?
No charge
positive
neutral
negative
36
What happens to electrons in an ionic bond?
Protons are shared between atoms
Electrons are shared between atoms
Electrons are transferred between atoms
Protons are transferred between atoms
37
Two subatomic particles are found in the nucleus. One is the neutron; what is the other one?
electron
positrino
isotope
proton
38
What element is located in Group 2, Period 2?
Chromium
Carbon
Radium
Beryllium
39
Which element will Lithium have the most in common with?
oxygen
gold
boron
sodium
40
In what period is this element located?
5
2
7
1
41
How many neutrons does Sodium have?
12
11
22.98977
Na
42
Which of these elements are an alkaline earth metal?
palladium
strontium
neon
sodium
43
What is the charge of a neutron?
negative
neutral
positive
44
What is the overall charge of the NUCLEUS?
negative
positive
neutral
45
John Dalton's theory said that all atoms of the same element are
different
the same
combined
