Which of these statements should be included to explain what was missing from Dalton’s atomic theory?
Atoms and the Periodic Table

Quiz
•
Science
•
8th Grade
•
Easy
lina Zendah
Used 3+ times
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41 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
. Atoms are made up of smaller particles
. All atoms of the same element are identical.
Atoms of different elements have different masses.
Compounds form when atoms of different elements combine in a specific ratio.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What incorrect idea in Bohr’s understanding of the atom was replaced in later theories?
Atoms cannot be divided.
An atom is mostly empty space.
In an atom, electrons orbit the nucleus like planets orbit the sun.
An atom includes electrons embedded in a sphere of positive charge.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
New theories usually don’t start “from scratch.” For example, the modern model of the atom is the result of new information added to the cloud model. What is the main difference between the cloud model of the atom and the modern model?
Only the modern model includes protons.
The cloud model does not include neutrons.
Electrons move in specific orbits in the cloud model.
Electrons exist in a cloud around the nucleus in the modern model
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these statements should be included about Democritus' atomic theory?
All atoms of a given element are identical in mass and properties.
All atoms are uncut table, meaning not able to divide
Electrons move only in specific (orbits) around an atom's nucleus
Electrons move rapidly within (a cloud-like) region
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which particles do not affect the charge of the atom?
protons
.neutrons
electrons
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Atoms with the same number of protons and different numbers of neutrons are:
Atomic number
Atomic mass
isotopes
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the cloud model, electrons move in specific orbits like planets do
True
False
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