Atomic Structure

Quiz
•
Science
•
9th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The nucleus of an atom is
negatively charged and has a low density.
negative charged and has a high density.
positively charged and has a low density.
positively charged and has a high density.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
All atoms of the same element have the same
number of protons.
number of neutrons.
mass number.
mass.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
This model was developed after J.J. Thompson discovered electrons, a particle smaller than an atom. Is shows electrons floating freely in a positive space.
The "Plum Pudding Model" of the atom
The "Rutherford Model" of the atom
Democritus's model of the atom
The "Quantum Mechanical Model" of the atom
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ernest Rutherford discovered that atoms were mostly _________________.
negatively charged
positively charged
electrons
empty space.
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
The atom is neutral because the number of protons is equal to the number of _____________.
Tags
NGSS.MS-PS1-1
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Isotopes are atoms of the same element with different numbers of ____________ which results in different mass numbers.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is NOT part of Dalton's atomic theory?
All elements are composed of atoms.
Atoms of the same element are alike.
Atoms are always in motion.
Atoms that combine do so in simple whole-number ratios.
Tags
NGSS.MS-PS1-5
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