WorksheetsModule H Unit 3 Review
Total questions: 27
Worksheet time: 14mins
How is the current understanding of atomic structure different from both Thomson's model and Rutherford's model?
Electrons move only in the current model of the atom
Electrons are fixed only in the current model of the atom
Electrons travel in orbits only in the current model of the atom
Electrons move within an electron cloud only within the current model of the atom
Check off three properties of metals that nonmetals do not typically have.
shiny
hard
malleable
good conductors
round
In a neutral atom, the number of electrons equals the number of ____.
protons
neutrons
electrons
atoms
What information can be found on each square of the periodic table? Check all that apply
Atomic number
Chemical symbol
Chemical name
Average atomic mass
Metallic number
What must happen for an ion to form?
An atom must gain or lose an electron
An atom must gain or lose a proton
An atom must gain or lose a neutron
An atom must gain or lose mass
Where are metals usually found on the periodic table?
On the left side of the zigzag
On the right side of the zigzag
In the zigzag
What is the zigzag?
What are the properties of metalloids?
The same as metals, but smaller
The same as nonmetals, but more exaggerated
Some properties of metals and some of nonmetals
Always changing
What is the chemical symbol for Potassium?
P
K
Pt
Pm
What is the chemical name for H?
Helium
Hydrogen
Sulfur
Holmium
Which element is in the same group as Nitrogen?
Arsenic (As)
Gold (Au)
Radon (Rn)
Lithium (Li)
Which element is in the same period as Sodium (Na)?
Magnesium (Mg)
Rubidium (Rb)
Oxygen (O)
Beryllium (Be)
Which element is in the same group as Yitrium (Y)?
Sulfur (S)
Zirconium (Zr)
Calcium (Ca)
Scandium (Sc)
How many valence electrons to element in group 18 have?
18
8
5
It depends
How many valence electrons to elements in group 15 have?
15
10
5
It depends
How many valence electrons do elements in group 2 have?
22
2
20
It depends
A(n) ____ is the smallest particle of an element that has the chemical properties of that element.
Matter
Atom
Nucleus
Electron cloud
Which term means "unable to be cut." Why did scientists use this name?
Atom: because scientists thought it was the smallest unit of life
Nucleus: because this is something too small to cut
Bohr: because these models were intended to draw the smallest things in the world
Periodic: because elements are the smallest units of life
Fluorine has 7 valence electrons. What bond is likely to form between two atoms of fluorine?
A covalent bond
An ionic bond
A metallic bond
A weak bond
Which type of bond does the phrase "opposites attract" apply to best?
Ionic bonds
Covalent bonds
Metallic bonds
Weak bonds
How is the position of electrons involved in metallic bonding different from the position of electrons that form ionic and covalent bonds?
The electrons are free in metallic bonds
The electrons are fixed in metallic bonds
There are no electrons in metallic bonds
The electrons come apart in metallic bonds
Which of the following can happen during a chemical change?
Atoms change into new types of atoms
Bonds break and new bonds form
Nuclei of atoms break apart and combine
All of the electrons in the atom are lost
Why are atoms of lithium, sodium, and potassium almost never found in nature? (p. 188)
They only have one electron which makes them unstable
They are man-made elements
They only exist in gaseous form
They are going extinct due to air pollution
How does the nucleus of of a Copper atom compare to the nucleus of a Nickel atom?
The nucleus of copper contains one MORE proton
The nucleus of copper contains one LESS proton
The nucleus of copper is more metallic
The nucleus of copper is metal
Thorium has an average atomic mass of 232. What does this mean?
232 is the average mass of the protons and neutrons in Thorium
232 is the average mass of the protons and electrons in Thorium
232 is the average mass of the electrons and neutrons in Thorium
232 is the average mass of the periodic table
What is the mass number of an isotope of an atom with two protons and two neutrons?
2
4
22
42
Which part of the atom has a positive charge?
Proton
Neutron
Electrons
Nucelus
Which part of the atom has a negative charge?
Proton
Neutron
Electron
Nucleus
