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WorksheetsThe Atomic Theory
Total questions: 20
Worksheet time: 10mins
What is the building block of ALL matter?
Molecule
Cell
Atom
Subatomic Particles
What are the subatomic particles?
Anion
Proton
Cation
Neutron
Electron
What is the atomic number of this element?
36
84.798
What are the columns on a periodic table called?
Period
Group
What is the Conservation of Decay?
Process by which an unstable atomic nucleus loses energy by radiation.
Particles don't just disappear. Even during radioactive decay, they turn into energy.
Alpha, Beta, and Gamma Decay.
If the half life of Uranium-240 was 10 years, how long would it take for it to decay from 310g to 80g?
8 years
10 years
4 years
20 years
An alpha particle is made up of...
2 Proton and 2 Electrons
2 Protons and 1 Electron
1 Proton and 2 Electrons
2 Protons and 2 Neutrons
What changes in an element to make it an isotope?
Number of Protons
Number of Electrons
Number of Neutrons
Nothing
An anion is a positively charged ion.
True
False
When a substance undergoes beta decay...
The atomic weight increases by 1
The atomic weight decreases by 1
The atomic number increases by 1
The atomic number decreases by 1
Is this an example of nuclear fusion or nuclear fission?
Nuclear Fusion
Nuclear Fission
What group in the periodic table has inert elements?
Noble Gases
Group 8
Group 1
Alkali Metals
What does an ionic bond have a combination of?
A combination of two metals
A combination of two non-metals
A combination of one non-metal and one metal
What is electronegativity?
The measure of an atom's ability to attract the shared electrons of an ionic bond to itself
The measure of an atom's ability to attract the shared electrons of a covalent bond to itself
What is the relationship between covalent bonds, ionic bonds, and metallic bonds?
Metallic bonds are somewhat weaker than covalent and ionic bonds
Metallic bonds are so much weaker than covalent and ionic bonds
Metallic bonds are somewhat stronger than covalent and ionic bonds
Metallic bonds are so much stronger than covalent and ionic bonds
What is the octet rule for lithium?
+2
-2
+1
-1
What is the most reactive nonmetal on the periodic table?
Group 17
Fluorine
Group 1
Cesium
The half-life of Zn-71 is 2.4 minutes. If one had 100.0 grams at the beginning, how many grams would be left after 7.2 minutes have elapsed?
3.3 half lives
33.3 half lives
12.5 half lives
13.89 half lives
Who proposed the atomic theory first?
J.J. Thomson
Neils Bohr
John Dalton
Isaac Newton
How does the Lewis Dot Diagram work?
The model has an atom that is composed of electrons surrounded by a soap of positive charge to balance the electron's negative charge
The model shows that an atom is mostly empty space with electrons orbiting a positively charged nucleus
The model shows the atom as a central nucleus containing protons and electrons at specific distances
The model shows how valence electrons are distributed around the atoms in a molecule
