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WorksheetsStudying Atoms
Total questions: 15
Worksheet time: 13mins
Name
Class
Date
1.
Atoms are extremely small.
a)
True
b)
False
2.
The word "atom" come from the Greek "atomos" that means "uncut", "indivisible".
a)
True
b)
False
3.
Aristotle thought that all matter were made of only 4 elements: hot, dry, cold, and wet.
a)
True
b)
False
4.
John Dalton gathered evidence for the existence of atoms by measuring the masses of elements that reacted to form compounds.
a)
True
b)
False
5.
Democritus proposed that all matter is made up of individual particles called atoms, which cannot be divided.
a)
False
b)
True
6.
All elements are composed of atoms (Main point of Dalton's Theory)
a)
True
b)
False
7.
In a particular compound, atoms of different elements always combine the same way. (Main point of Dalton Theory)
a)
True
b)
False
8.
All atoms have the same mass. (Main Point of Dalton's Theory)
a)
False
b)
True
9.
Compounds contain atoms of more than one element. (Main Point of Dalton's Theory)
a)
True
b)
False
10.
Objects with like electric charges attract , and objects with opposite electric charges repel.
a)
false
b)
true
11.
Thomson concluded that the particles in the glowing beam had a negative charge because they were attracted to a positive plate.
a)
True
b)
False
12.
Thomson’s experiments provided the first evidence for the existence of subatomic particles.
a)
True
b)
False
13.
Negative charges are evenly scattered throughout an atom filled with positively charged mass of matter (Thomson's Model).
a)
True
b)
False
14.
An alpha particle is a fast-moving particle that carries a negative charge.
a)
False
b)
True
15.
An atom’s positive charge is concentrated in its nucleus. (Rutherford' experiment conclusion)
a)
True
b)
False
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