WorksheetsSize of an Atom and Microscopes
Total questions: 28
Worksheet time: 14mins
What is an atom?
The smallest particle of an element that retains its identity during a chemical reaction
The smallest particle of an element that can change into a particle of another element during a chemical reaction
The smallest indivisible particle of matter
The smallest particle of a substance
What is the average size of most atoms in nano-meters (nm)?
0.1 nm
1 nm
10 nm
100 nm
What is the average size of most atoms in Angstroms (Å)?
0.1 Å
1 Å
10 Å
The angstrom (Å) unit is widely used to express the sizes of atoms. Choose the correct value of an angstrom from the list below.
1 Å = 0.1 nm
1 Å = 1 nm
1 Å = 0.1 m
1 Å = 0.1 cm
What does a nanometer (nm) equal to?
1 nm = 10-9 m
1 nm = 10-10 m
1 nm = 109 m
What does an Angstrom (Å) equal to?
1 Å = 109 m
1 Å = 1010 m
1 Å = 10-10 m
1 Å = 10-9 m
The radius of an atom of iron (Fe) is 1.26 x 10-10 m.
Choose the answer corresponding to the radius of an iron atom expressed in Angstrom (Å) units.
1.26 x 10-10 m = 1.26 Å
1.26 x 10-10 m = 12.6 Å
1.26 x 10-10 m = 126 Å
The size of an atom of gold is 1.44 x 10-10 m.
How many atoms of gold could be lined up side by side in a line of 1.44 m?
10,000,000,000 atoms
1.44 x 1010 atoms
1 x 10-10 atoms
0.0000000001 atoms
How many nano-meters are in 1 meter?
10,000,000,000 nm
0.000000001 nm
1,000,000,000 nm
0.0000000001 nm
How many Angstrom (Å) are in 1 meter?
10,000,000,000 Å
0.000000001 Å
1,000,000,000 Å
0.0000000001 Å
If the size of a gold atom is (1.66 x 10-10) m, how many atoms of gold could be lined up side by side in a line of 1.66 m?
1.66 x 1010 atoms
1 x 1010 atoms
1 x 10-10 atoms
How many nano-meters are in 1 cm?
106 nm
107 nm
108 nm
109 nm
How many Angstroms (Å) are in 1 cm?
106 Å
107 Å
108 Å
109 Å
The size of a sulfur atom is 1 Angstrom. How many atoms of sulfur would fit side by side in one line of 5 cm length?
5 atoms
5 x 108 atoms
5 x 107 atoms
5 x 109 atoms
How many Angstroms are in 100 nm?
100 Å
10 Å
1000 Å
How many nano-meters are in 1 meter?
1 x 1010 nm
1 x 10-10 nm
1 x 109 nm
1 x 10-9 nm
How many Angstrom (Å) are in 1 meter?
1 x 1010 Å
1 x 10-10 Å
1 x 109 Å
1 x 10-9 Å
If the size of a copper atom is around 2.50 Å, what would be the length of a chain, in meters (m), made of 10,000,000,000 copper atoms?
2.5 m
1 m
4 m
Choose ALL instruments that are used to observe atoms from the list below
Light microscope
Transmission electron microscope
Scanning tunneling microscope
Scanning electron microscope
To observe atoms, a scanning tunneling microscope uses...
a day light and magnifies a sample up to 1,000 -2,000 times
a beam of electrons and magnifies a sample up to 50,000 times
a tip that is an atom wide that moves along the sample and responses to the electrical current between a tip and a sample. Magnifies up to 90,000,000 times
beam of electrons and magnifies a sample up to 500,000 times
From the list of microscopes below, choose a microscope that uses visible light and lenses to create an image and magnifies a sample up to 1000 - 2000 times.
Scanning Electron Microscope
Optical Microscope
Scanning Tunneling Microscope
Transmission Electron Microscope
From the list of microscopes below, choose a microscope that uses a beam of electrons that passes through a very thin sample (< 1 micrometer) to create an image and magnifies a sample up to 10,000,000 times.
Scanning Electron Microscope
Optical Microscope
Scanning Tunneling Microscope
Transmission Electron Microscope
From the list of microscopes below, choose a microscope that uses a thin beam of electrons that scans the surface of the sample and those electrons reflect from a sample to create an image. This microscope magnifies a sample up to 50,000 times.
Scanning Electron Microscope
Optical Microscope
Scanning Tunneling Microscope
Transmission Electron Microscope
From the list of microscopes below, choose a microscope that uses a tip an atom wide that scans the surface of the sample. The electrical current passes between a tip and the surface of a sample. The electrical current changes when a tip moves up and down across a sample creating an image. This microscope magnifies a sample up to 90,000,000 times.
Scanning Electron Microscope
Optical Microscope
Scanning Tunneling Microscope
Transmission Electron Microscope
From the list of four microscopes below, choose a microscope that is the best for "looking" at individual atoms?
Scanning Electron Microscope
Optical Microscope
Scanning Tunneling Microscope
Transmission Electron Microscope
From the list of four microscopes below, choose a microscope that is the best for "looking" at a group of cells?
Scanning Electron Microscope
Optical Microscope
Scanning Tunneling Microscope
Transmission Electron Microscope
From the list of four microscopes below, choose a microscope that is the best for "looking" at a 3D image of a dust mite?
Scanning Electron Microscope
Optical Microscope
Scanning Tunneling Microscope
Transmission Electron Microscope
From the list of four microscopes below, choose a microscope that is the best for "looking" at organelles inside of a cell or nano-particles?
Scanning Electron Microscope
Optical Microscope
Scanning Tunneling Microscope
Transmission Electron Microscope
