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Chapter 4: Atoms, Elements & The Periodic Table Flashcards | StudBud
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Chapter 4: Atoms, Elements & The Periodic Table
Chapter 4: Atoms, Elements & The Periodic Table
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1
A proton is neutral
True
False
2
Which pair of elements would have the same number of valence electrons?
Magnesium and Lithium
Lithium and Beryllium
Lithium and Sodium
Magnesium and Sodium
3
How many valence electrons does Carbon have?
1
3
2
4
4
Which of the following elements is a nonmetal?
Cl
Mn
V
Ba
5
In which period is Copper found
8
4
1
6
6
The sum of the protons and neutrons in an atom is called the...
Atomic number
Electron number
Atomic Mass
Element number
7
A neutron is negative
True
False
8
What element is in period 4 group 7
Rutherfordium
Chlorine
Manganese
Bromine
9
The number of protons in the nucleus of an atom is called the...
Atomic number
Electron number
Element number
Mass number
10
What particles make up atoms?
Electrons & Protons
Protons & Neutrons
Protons, Electrons, Neutrons
Neutrons & Electrons
11
The elements in a period...
belong to the same family
are arranged alphabetically
have identical properties
have the same number of electron energy levels
12
Which of the following is a metalloid?
Germanium
Gallium
Sulfur
Tin
13
What is the atomic number of this atom?
5
9
13
4
14
What are the horizontal rows on the periodic table called?
atoms
periods
groups
molecules
15
Electron dot diagrams show
All electrons in the electron cloud
All the protons, neutrons, and electrons
All electrons arranged in shells
Valence electrons only
16
Valence Electrons on found on which energy level?
Outermost Energy Level furthest from the Nucleus
First Energy Level
Third Energy Level
Second Energy Level
17
An electron is negative
True
False
18
Which of the following describes a neutral atom of oxygen?
6 protons, 6 neutrons, 6 electrons
8 protons, 8 neutrons, 8 electrons
6 protons, 6 neutrons, 8 electrons
8 protons, 8 neutrons, 10 electrons
19
How many neutrons does this element have?
20
10
20.08
0.08
20
Sodium has 11 protons, 12 Neutrons and 11 Electrons. Which describes the Nucleus?
11 Protons and 11 Electrons
11 Protons and 12 Neutrons
11 Protons, 12 Neutrons and 11 Electrons
12 Neutrons and 11 Electrons
21
What is the number of protons in an atom with an atomic number of 37?
caesium
tantalum
rubidium
iridium
22
The elements to the left of the dark line (staircase) on the Periodic Table are...
metalloids
metals
nonmetals
gases
23
How many neutrons does neon have?
10
12
20
11
24
How many valence electrons do magnesium and calcium have?
3
2
4
1
25
What accurately describes a nonmetal?
Both malleable and ductile
Always solid at room temperature
Poor conductors of electricity
26
Which group 14 element is classified as a metal?
germanium
carbon
tin
silicon
27
True or false: This is the correct electron dot diagram for sodium.
true
false
28
Elements in the Periodic Table are arranged by ...
Number of Neutrons
Atomic Number
Chemical Reactivity
Atomic Weight
29
A proton is positive
True
False
30
An atom has 21 protons, 21 electrons and 24 neutrons. The atom has
atomic number 24 and mass number 42
atomic number 21 and mass number 45
atomic number 24 and mass number 45.
atomic number 45 and mass number 21
31
In Bohr's model of the atom, where are the electrons located?
Electrons are in the nucleus
The electrons move anywhere in the atom.
The electrons occupy fixed positions around the nucleus.
The electrons move in levels around the nucleus.
32
What is the atomic number of oxygen?
16
24
8
33
Each energy level of an atom has a maximum number of _________ it can hold.
Electrons
Protons
molecules
neutrons
