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Test One review Flashcards

0
Q

Who discovered radioactivity?

A

Becquerel

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1
Q

Who was the first too discover X-rays?

A

Roentgen

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2
Q

What year were X-rays discovered?

A

1895

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3
Q

What year was radioactivity discovered?

A

1896

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4
Q

Name the 6 types of ionizing radiation.

A
  • Gamma
  • Beta
  • X-Ray
  • Alpha
  • Positron
  • Nuetron
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5
Q

Name at least 3 types of NON ionizing radiation.

A
  • radio waves
  • microwaves
  • lasers
  • infrared lasers
  • sun light
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6
Q

Name one factor that will determine if the nucleus of an atom will be stable or unstable.

A
  • if the size of the nucleus is over 83 protons( always radioactive)
  • if the number of protons and neutrons are unequal
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7
Q

True or false?

If radiation removes an orbital atom from another atom, the atom has had the electron removed is now radioactive.

A

False

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8
Q

What is the mass of an electron?

A

1/1837 amu

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9
Q

What is the charge of an electron?

A

-1

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10
Q

What is the mass of a Nurtron?

A

1 amu

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11
Q

What is the charge of a Nuetron?

A

Neutral

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12
Q

What is the mass of a proton?

A

1 amu

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13
Q

What is the charge of a proton?

A

+1

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14
Q

What is the mass of an Alpha particle?

A

4 amu

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15
Q

What is the charge of an alpha particle?

A

+2

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16
Q

What is the ionizing capability of an alpha particle?

A

High

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17
Q

What is the penetrating ability of an alpha particl?

A

Low

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18
Q

What is a good shield for alpha radiation?

A
  • paper
  • air
  • skin
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19
Q

What is the mass of a beta particle? (Same as electron)

A

1/1837 amu

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20
Q

What is the charge of a beta particle?

A

-1

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21
Q

What is a basic atomic particle identical to a beta particle?

A

Electron

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22
Q

What is the ionizing capability of a beta particle?

23
Q

What is the penetrating ability of a beta particle?

24
What is a good shielding material for a beta particle?
- Aluminum - plastic - glass
25
What is the mass of a positron?
1/1837
26
What is the charge of a positron?
+1
27
What is the ionizing capability of a positron?
Moderate
28
What is a penetrating ability of a positron?
Moderate
29
What is a good shielding material for positron radiation?
Hydrogen
30
What is the only kind of radiation that can make something else radioactive
Nuetron radiation
31
What are the mass and charge of an x-ray
Both are 0
32
What is the ionizing capability of an x-ray?
Low
33
What is the penetrating ability of an x-ray?
High
34
What is a good shield for X-ray radiation?
Lead
35
X-rays originate in what part of the Atom
Electron orbits
36
True or false: x-rays are not a form of ionizing radiation
False
37
True or false: gamma rays are not a form of ionizing radiation
False
38
What is a mass and charge of a Gamma Ray?
They have no charge ; 0
39
What is the ionizing ability of a GammaRay?
Low
40
What is the penetrating ability of a Gamma ray?
High
41
What is a good shielding material for gamma rays?
Lead
42
True or false: gamma rays and x-rays are a part of the family of electromagnetic radiation?
True
43
What is the name of the scientist who came up with the planet and sun model of the atom?
Nelis Bohr
44
If an alpha particle picks up two electrons, it will become an Atom of which element?
Helium (He)
45
The number of protons in the nucleus of the Atoms is called what?
Atomic number
46
The number of what element in the nucleus of the atom determines the name of the element.
Protons
47
What is the smallest unit of an element that retains the properties of an element?
Atom
48
What is the symbol for atomic number
Z
49
What is the symbol for mass number
A
50
If an atom of an element has 23 protons and it's nucleus how many electrons will it have and it's orbits
23 electrons
51
And isotope of nitrogen has a mass of 19 it's atomic number is 7. How many neutrons does it have?
12 neutrons
52
What are two forms of isotopic notation to write calcium 40
Ca-40 Calcium -40
53
A variation of an Atom with the same number of protons but different number of neutrons is known as what element?
Isotope
54
What is another name for the field of safety which is concerned about radiation?
Health physics

Radiation Physics (1 decks)

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