
Science and Physics Quiz
Science
8th Grade
NGSS covered
Used 3+ times

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53 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which subatomic particle determines the identity of an element?
Proton
Neutron
Electron
Nucleus
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An atom has 6 protons and 7 neutrons. What is its mass number?
6
7
13
14
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Elements in the same group on the periodic table have similar:
Atomic masses
Chemical properties
Atomic numbers
Numbers of neutrons
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the density of a substance when it changes from a solid to a liquid?
It increases
It decreases
It stays the same
It doubles
Tags
NGSS.MS-PS1-4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a chemical equation, what does the arrow (→) represent?
A mixture is formed
A reaction occurs
Energy is absorbed
Mass is conserved
Tags
NGSS.MS-PS1-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is evidence of a chemical change?
Ice melting
Sugar dissolving
Rust forming
Water evaporating
Tags
NGSS.MS-PS1-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many valence electrons does an atom of oxygen (O) have?
2
6
8
10
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