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Prongo Grade 8 Science Practice
Name
Date
chapter
Atoms & Molecules
chapter
Chemical Reactions
chapter
Forces & Newton's Laws
chapter
Genetics & Inheritance
chapter
Waves & EM Spectrum
chapter
Brain Break — History & Civics Trivia
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.
A ___ changes substances into new materials with different properties.
7.
Starting substances in a reaction are called ___.
8.
New substances formed are called ___.
9.
In a closed system, total mass before and after a reaction is ___.
10.
Balancing equations ensures equal numbers of each ___ on both sides.
11.
A ___ is a push or pull on an object.
12.
Newton's first law says an object at rest stays at rest unless a net ___ acts on it.
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