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Grade 8 Science: Atoms, Molecules & Periodic Trends Awareness
Name
Date
1.
An ___ is the smallest unit of an element that keeps that element's identity.
2.
Protons carry a ___ charge and are found in the nucleus.
3.
Electrons carry a ___ charge and orbit the nucleus.
4.
Neutrons have ___ charge.
5.
The atomic number equals the number of ___ in an atom.
6.
Elements in the same column of the periodic table are called a ___.
7.
Two or more atoms bonded together form a ___.
8.
Water (H₂O) is a ___ made of hydrogen and oxygen atoms.
9.
What three subatomic particles make up an atom?
10.
What is the difference between an element and a compound?
11.
What does the atomic number tell you?
12.
Why do elements in the same group have similar properties?
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