The Discovery of the Atom
Authored by boo Baloo
Chemistry
7th - 9th Grade
NGSS covered
Used 123+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What was the first discovered part of the atom?
Electron
Proton
Neutron
quark
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Democtrius' theory believed that all matter was made of tiny distinct elements.
True
False
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mass number of an element?
the amount of protons
the amount of electrons, protons, and neturons
the amount of protons and neutrons
the average mass of an element's isotopes.
Tags
NGSS.HS-PS1-8
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the atomic mass?
the average of the mass of the element's isotopes
the average mass of electrons
the average mass of the netrons and electrons
the average mass of all atoms divided by 1800.
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What makes an ion postive?
The loss of an electron.
The loss of a neutron.
The loss of a proton.
The loss of an electron's outer shell.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A negative ion loses an electron.
True
False
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Bohr's model of the atom shows...
electrons moving in random, straight lines
electrons moving in circular motions around a nucleus.
electrons moving throughout the entire atom
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