[GENERAL CHEMISTRY] Radioactivity

a. Radioactivity

Spontaneous emission of particles / ionizing radiation by unstable nuclei of heavier elements or unstable p+-to-n0 ratio.

a. Radioactivity

b. Electron affinity

c. Reactivity

d. Electronegativity

a. Curie (Ci)

[RADIOACTIVITY]

Non-SI unit of radioactivity:

a. Curie (Ci)

b. Becquerel (Bq)

c. Roentgen (R)

d. Nanometer (Nm)

b. Becquerel (Bq)

[RADIOACTIVITY]

SI unit of radioactivity:

a. Curie (Ci)

b. Becquerel (Bq)

c. Roentgen (R)

d. Nanometer (Nm)

d. 3.7x10^10 decay/sec

[RADIOACTIVITY]
1 Curie (Ci) is equivalent to:

a. 2.7x10^5 decay/sec

b. 3.7x10^5 decay/sec

c. 2.7x10^10 decay/sec

d. 3.7x10^10 decay/sec

a. 1 decay/sec

[RADIOACTIVITY]
1 Becquerel (Bq) is equivalent to:

a. 1 decay/sec

b. 1.5 decay/sec

c. 2 decay/sec

d. 2.5 decay/sec

a. Po, Ra

[RADIOACTIVITY]
Marie Curie discovered which of the following?

a. Po, Ra

b. Co, Ni

c. Po, Ni

d. Co, Ra

c. Uranium (U)

[RADIOACTIVITY]
Henri Becquerel discovered which of the following?

a. Radium

b. Polonium

c. Uranium (U)

d. X-rays

e. Roentgen equivalent man (REM)

[RADIOACTIVITY]
Unit of radiation damage.

a. Curie (Ci)

b. Becquerel (Bq)

c. Roentgen equiv(R)

d. Rad/gray

e. Roentgen equivalent man (REM)

d. Rad/gray

[RADIOACTIVITY]

Unit of amount of exposure to radiation.

a. Curie (Ci)

b. Becquerel (Bq)

c. Roentgen equiv(R)

d. Rad/Gray (Gy)

e. Roentgen equivalent man (REM)

a. 1 J/Kg

[RADIOACTIVITY]

1 Gy is equivalent to

a. 1 J/Kg

b. 2 J/Kg

c. 3 J/Kg

d. 4 J/Kg

b. 100 rads

[RADIOACTIVITY]

1 Gy is equivalent to how many rads?

a. 50 rads

b. 100 rads

c. 150 rads

d. 200 rads

d. a and b

Radioactive emissions:

a) Radioisotopes decay randomly

b) Beta can penetrate body tissue

c) Gamma CAN penetrate body tissue

[RADIOACTIVITY]
True about radioactive emissions:

a. Radioisotopes decay randomly

b. Beta can penetrate body tissue

c. Gamma cannot penetrate body tissue

d. a and b

e. b and c

f. All

a. True

[RADIOACTIVITY]

Radioisotopes decay randomly

a. True

b. False

a. True

[RADIOACTIVITY]

Beta and gamma can penetrate body tissue

a. True

b. False

a. Alpha

[RADIOACTIVITY]
Rays/Decay:

Heaviest (4)

a. Alpha

b. Beta

c. Gamma

b. Beta

[RADIOACTIVITY]

Rays/Decay:

Light (1/2000)

a. Alpha

b. Beta

c. Gamma

c. Gamma

[RADIOACTIVITY]
Rays/Decay:

No mass and charge is 0

a. Alpha

b. Beta

c. Gamma

a. Alpha

[RADIOACTIVITY]
Rays/Decay:

Slowest (0.1 speed of light)

a. Alpha

b. Beta

c. Gamma

b. Beta

[RADIOACTIVITY]

Rays/Decay:

Fast (0.9 speed of light)

a. Alpha

b. Beta

c. Gamma

c. Gamma

[RADIOACTIVITY]

Rays/Decay:

Fastest (speed of light)

a. Alpha

b. Beta

c. Gamma

a. Alpha

[RADIOACTIVITY]

Rays/Decay:

Low penetrating power

a. Alpha

b. Beta

c. Gamma

b. Beta

[RADIOACTIVITY]
Rays/Decay:

Medium penetrating power

a. Alpha

b. Beta

c. Gamma

c. Gamma

[RADIOACTIVITY]
Rays/Decay:

High penetrating power

a. Alpha

b. Beta

c. Gamma

a. Paper

[RADIOACTIVITY]
Alpha ray can be prevented by:

a. Paper

b. Aluminum

c. Lead

d. Iron

b. Aluminum

[RADIOACTIVITY]
Beta ray can be prevented by:

a. Paper

b. Aluminum

c. Lead

d. Iron

c. Lead

[RADIOACTIVITY]
Gamma ray can be prevented by:

a. Paper

b. Aluminum

c. Lead

d. Iron

a. Alpha decay

[RADIOACTIVITY]

Emission of alpha particle from the nucleus.

a. Alpha decay

b. Beta decay c. Gamma emisssion

d. Positron emission

e. Electron capture

b. Beta decay

[RADIOACTIVITY]
Emission of an electron from a nucleus.

a. Alpha decay

b. Beta decay c. Gamma emisssion

d. Positron emission

e. Electron capture

c. Gamma emisssion

[RADIOACTIVITY]

Observed when a nuclide is formed in an excited state and then decays to its ground state with the emission of a gamma ray.

a. Alpha decay

b. Beta decay

c. Gamma emisssion

d. Positron emission

e. Electron capture

a. True

[RADIOACTIVITY]
The presence of a nucleus in an excited state is often indicated by an asterisk (*).

a. True

b. False

d. Positron emission

[RADIOACTIVITY]
β+ decay

a. Alpha decay

b. Beta decay c. Gamma emisssion

d. Positron emission

e. Electron capture

d. Positron emission

[RADIOACTIVITY]
Emission of a positron from the nucleus.

a. Alpha decay

b. Beta decay c. Gamma emisssion

d. Positron emission

e. Electron capture

c. Positron

[RADIOACTIVITY]
Positively charged subatomic particle having the same mass and magnitude of charge as the electron and constituting the antiparticle of a negative electron.

a. Negatron

b. Antineutron

c. Positron

d. P-bar

e. Electron capture

[RADIOACTIVITY]
Occurs when one of the inner electrons in an atom is captured by the atom's nucleus.

a. Alpha decay

b. Beta decay

c. Gamma emisssion

d. Positron emission

e. Electron capture

a. Polonium-210

[RADIOACTIVITY]

Which undergoes alpha decay?

a. Polonium-210

b. Oxygen-15

c. Iodine-131

d. Potassium-40

e. Cobalt-60

c. Iodine-131

[RADIOACTIVITY]
Which undergoes beta decay?

a. Polonium-210

b. Oxygen-15

c. Iodine-131

d. Potassium-40

e. Cobalt-60

e. Cobalt-60

[RADIOACTIVITY]
Which undergoes gamma emission?

a. Polonium-210

b. Oxygen-15

c. Iodine-131

d. Potassium-40

e. Cobalt-60

b. Oxygen-15

[RADIOACTIVITY]
Which undergoes positron emission?

a. Polonium-210

b. Oxygen-15

c. Iodine-131

d. Potassium-40

e. Cobalt-60

d. Potassium-40

[RADIOACTIVITY]
Which undergoes electron capture?

a. Polonium-210

b. Oxygen-15

c. Iodine-131

d. Potassium-40

e. Cobalt-60