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WorksheetsPT Self Check 3
Total questions: 30
Worksheet time: 15mins
In the periodic table, elements are listed in rows according to their ___________.
date of discovery
atomic radius
atomic number
atomic mass
Phosphorus (P) has ____ protons in its nucleus.
15
20
17
12
A neutral atom of oxygen has ___ electrons.
2
4
6
8
How many neutrons does Beryllium (Be) have?
4
5
9
20
Periods tell this about an element.
Number of electron orbitals.
Number of valence electrons.
Number of protons
Number of neutrons
Groups tell this about an element.
Number of electron orbitals.
Number of valence electrons.
Number of protons
Number of neutrons
Period 3, group 13 element.
Aluminum
Boron
Gallium
Silicon
Dot diagrams, like the image, show the _______ of an element.
valence electrons
electron orbitals
protons
neutrons
Valence electrons are located in the ___________ orbital.
outermost
innermost
middle
first
The outermost electron orbital can generally hold ___ electrons.
2
4
6
8
How many valence electrons does Nitrogen (N) have?
5
4
3
6
Which dot diagram could represent elements in the same group as Oxygen (O)?
A
B
C
D
The model of an atom shown below is called a _________.
Bohr model
dot diagram
cloud model
matter diagram
What period does this element belong in?
1
2
3
4
What group does this element belong in?
1
2
3
4
What element is this?
Lithium
Magnesium
Sodium
Beryllium
An element has four electron orbitals and two valence electrons. What is the element?
Sodium
Chlorine
Calcium
Iron
Based on its location in the periodic table, you can determine that Arsenic (As) has ____________.
4 electron shells and 5 valence electrons
4 electron shells and 3 valence electrons
5 electron shells and 4 valence electrons
5 electron shells and 5 valence electrons
The majority of the different kinds of elements are ______.
metals
nonmetals
metalloids
Which element below is classified as a nonmetal?
Lithium (Li)
Sulfur (S)
Boron (B)
Zinc (Zn)
Group 1 family of elements, minus Hydrogen.
alkali metals
alkaline earth metals
halogens
noble gases
Group 17 family of elements.
alkali metals
alkaline earth metals
halogens
noble gases
The valence shell for noble gases is best described as ______.
full
empty
nonexistent
small
How many valence electrons do elements in the alkaline earth family have?
1
2
7
8
The family of elements that share properties with both metals and nonmetals.
metalloids
transition metals
halogens
noble gases
_________ properties include density, melting point, color, and magnetism.
physical
chemical
_________ properties describe how elements react and form bonds with other atoms.
physical
chemical
Where do you find the family of nonreactive, colorless gases in the periodic table?
far right
middle
far left
bottom
Where do you find the family of highly reactive metals in the periodic table?
far right
middle
far left
bottom
Use the periodic table to determine which element will have chemical properties most similar to Chlorine (Cl)?
Iodine
Carbon
Aluminum
Neon
