
The Periodic Table
Authored by Catherine Laguna
Science
7th - 8th Grade
NGSS covered
Used 39+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A substance that cannot be decomposed into simpler substances by ordinary chemical processes is __________.
a molecule
a cell
an element
a compound
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Each element has a ______________ used by chemists around the world as a kind of shorthand.
symbol
picture
graph
color
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The number of protons in an element is known as the _______________________.
atomic name
atomic category
atomic score
atomic number
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Electrons in atoms collect in layers called ______around the nucleus.
shells
straws
springs
envelopes
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The element _________ has the symbol Au.
Aluminum
Oxygen
Silver
Gold
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The arrangement of chemical elements started with ______________________.
Henry Moseley
Dmitri Mendeleev
Robert Periodic
Marie Curie
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The first periodic table was ordered by _______________ and had many gaps.
atomic number
atomic weight
state of matter
density
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