WorksheetsChemistry A midterm
Total questions: 17
Worksheet time: 26mins
If an element has an atomic number of 13 and an atomic mass of 26, how many neutrons does it have?
10
13
15
17
What two particles are found in the nucleus, and what are their charges?
Neutron (o) and Electron (-)
Proton (+) and Electron (-)
Neutron (-) and Proton (o)
Neutron (o) and Proton (+)
Where are electrons found in an atom?
In a cloud surrounding the nucleus
Deep inside the nucleus
Electrons aren't a part of atoms.
Mixed evenly throughout the entire atom.
Which statement is true about elements of the same group in the periodic table?
They have very similar chemical and physical properties.
They have a wide range of chemical and physical properties.
They have a repeating pattern of physical and chemical properties.
They have no common patterns or properties.
[Ar] 4s2 3d7
What element is this noble gas configuration?
Rhodium
Cobalt
Iron
Nickel
[Kr] 5s2 4d10 5p5
Francium
Iridium
Silver
Iodine
What city did the Manhattan Project take place in?
Los Alamos, NM
Ney York City, NY
Daytona Beach, Fl
Robberts, ID
Who was named the director of the Los Alamos Laboratory in New Mexico?
Oppenheimer
Einstein
Obama
Trump
What is the electron configuration for sulfur?
1s2 2s2 2p6 3s2 3p4
1s2 2s2 2p6 3p6
1s1 2s3
1s2 2s2 sd7
What kind of charge does an ion have?
Positive
Negative
Neutral
Can be A or B
A nucleus of isotope A of an element has a larger mass than isotope B of the same element. The number of neutrons in the nucleus of isotope A is _______ the number of neutrons in the nucleus of isotope B.
Less than
Greater than
Same as
Depends on the valence electrons
What is the relative weight of the three subatomic particles?
Proton (1), Neutron (1/1840), and Electron (1)
Proton (1), Neutron (1), and Electron (1)
Proton (1), Neutron (1), and Electron (1/1840)
Proton (1/1840), Neutron (1), and Electron (1)
__________________ are subatomic particles that do not really behave like particles.
Protons
Neutrons
Electrons
Shells
When are atoms most stable?
When they have one valence electron
When they have an empty valence shell
When they are sleeping
When they have a full valence shell
If an atom shares, gains, or loses e- to become stable it becomes ______
An ion
An isotope
Electromagnetic
Radioactive
Cations are __________ charged and anions are __________ charged.
Positively, positively
Negatively, positively
Negatively, negatively
Positively, negatively
Which has a longer wavelength - microwaves or ultraviolet waves?
Microwave
Ultraviolet
