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Quantum Mechanics

Chemistry

9th - 12th Grade

NGSS covered

Used 373+ times

Quantum Mechanics
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

True or False: Electrons are considered stable at their ground state.

TRUE
FALSE

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For an electron to change from ground state to an excited state it must...

Absorb energy
Release energy

Tags

NGSS.HS-PS1-2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If an electron moves from n=2 to n=4 ...

it absorbs energy
it releases energy

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

How many electrons does Si contain? (click to see image)

14
28
2
4

Tags

NGSS.HS-PS1-1

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An orbital can at most hold how many electrons?

1 electron
2 electrons
3 electrons
4 electrons

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The weak nuclear force is responsible for - 

pulling two masses together
the repulsion of like charges
the radioactive decay of certain atomic nuclei
holding the nucleus of an atom together

Tags

NGSS.HS-PS1-8

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The force that holds the nucleus of an atom together is - 

weak and short ranged
strong and short-ranged
weak and long-ranged
strong and long-ranged

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