
Review-Matter
Authored by Teresa Simmons
Chemistry
6th - 8th Grade

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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Scandium atoms have an atomic number of 21 and atomic mass of 45. What is NOT true about Scandium atoms?
It has 24 neutrons.
A neutral atoms has 21 protons and 21 electrons.
It has 21 neutrons.
It has 21 protons.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the atomic number of the atom shown in the picture?
13
14
1
27
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is NOT true about Iron?
Fe is the chemical symbol.
The atomic mass is 26.
The atomic number is 26.
It has 30 neutrons.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which element is most likely to be a semi-conductor?
B
F
Li
H
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An atom is neutral if:
it has the same number of protons and neutrons.
it has the same number of protons and electrons.
it has an even number of valence electrons.
it has the same number of electrons and neutrons.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Elements are made of
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A proton is described as
a positively charged particle in the nucleus
a positively charged particle in the rings of an atom
a neutrally charge particle in the nucleus
a negatively charge particle in the nucleus
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