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Atomic physics

Total questions: 25

Worksheet time: 16mins

Name
Class
Date
1.
In a stable atom the amount of electrons is electron is equal to
a)
neutrons
b)
protons
c)
atomic mass
d)
neutrons + protons
2.
What types of particles are found in the cloud surrounding the atom's nucleus?
a)
Positively charged particles and negatively charged particles
b)
Negatively charged particles only
c)
Neutral particles and positively charged particles
d)
Positively charged particles only
3.
Where is the neutron located?
a)
In the loose nucleus with the electron
b)
In the dense nucleus with the protons
c)
In the electron cloud
d)
The nucleus floats on orbitals
4.
How many neutrons does oxygen have?
a)
16
b)
15.99
c)
8
d)
Doesn't contain any neutrons
5.
During Beta decay, the neutron to proton ratio of atoms undergoing decay is
a)
Increasing
b)
Decreasing
c)
Remains constant
d)
None of the Above
6.
Which nuclear emission involves the release of helium nuclei?
a)
alpha
b)
gamma
c)
positron
d)
beta
7.
Which of the following correctly describes the charge of beta particles and alpha particles? 
a)
Alpha particles are positively charged, and beta particles are negatively charged.
b)
Alpha particles and beta particles are both negatively charged.
c)
Alpha particles are negatively charged, and beta particles are positively charged.
d)
Alpha particles and beta particles are both positively charged
8.
This is the symbol for a(n)
a)
alpha particle
b)
beta particle
c)
gamma particle
9.

Atom is mostly empty space

a)

Dalton

b)

Thomson

c)

Rutherford

d)

Bohr

10.

What are hadrons made of?

a)

quarks

b)

protons and neutrons

c)

electrons, muons, and taos

d)

Fermions

11.

How many different types of quarks are there?

a)

6

b)

5

c)

4

d)

3

12.

A particle that is made out of quarks is?

a)

hadron

b)

lepton

c)

boson

d)

meson

13.

A quantum of energy is the amount of energy required to do what?

a)

move a neutron out of the nucleus

b)

move an electron to the nucleus

c)

move an electron from one energy level to another

d)

move an electron from one atom to another

14.

Which model required the discovery of the electron?

a)

A.

b)

B.

15.
In the standard model, the particle considered to be an elementary particle is a(n)
a)
proton
b)
neutron
c)
electron
d)
alpha particle
16.
All atoms consist of mostly empty space.
a)
True
b)
False
17.

In a particle decay, new particles move off in opposite directions to conserve...

a)

charge and kinetic energy

b)

momentum and charge

c)

momentum and quark number

d)

momentum and strangeness

18.
What is an atom that has an unstable nucleus and undergoes radioactive decay?
a)
Radiation
b)
Radioactivity
c)
Radioisotopes
19.
What is the penetrating rays and particles emitted by a radioactive source?
a)
Radiation
b)
Radioactivity
c)
Radioisotopes
20.
What is the process by which nuclei emit particles and rays?
a)
Radiation
b)
Radioactivity
c)
Radioisotopes
21.

These particles are neutral

a)

M

b)

K

c)

L

d)

L or k

22.
Alpha particles.....
a)
a) are positively charged.
b)
b) consist of two protons and four neutrons.
c)
c) can penetrate any thickness of matter
d)
d) All of the above 
23.

When a nucleus undergoes gamma decay, the atomic number of the element....

a)

remains the same

b)

decreases by one.

c)

increases by one.

d)

increases by two.

24.
Negatively charged particles emitted from a nucleus at a high speed are ____.  
a)
alpha particle
b)
gamma rays
c)
beta particles
d)
X rays
25.

Name given for the particles that have the same mass but all other properties are opposite.

a)

a.anti-matter

b)

b.anti-particle

c)

c.annihilate

d)

d.dark matter

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