Chapter 25:1 nuclear radiation

Question 1

what happened in 1896 whenthe French chemist Antoine Henri Becquerrel made an accidental discovery?

Answer 1

Uranium salts affected fog photographic film plates by fogging them

Question 2

What Nobel piece prize did Marie curie win? T

Answer 2

1903

Question 3

What is the spontaneous emission of rays or particles from certain elements?

Answer 3

Radioactivity

Question 4

What are the Rays and particles emitted from a radioactive source called?

Answer 4

Nuclear radiation.

Question 5

What is another name for radioactivity?

Answer 5

Radioactive decay

Question 6

What to do atoms do in both chemical and nuclear reactions?

Answer 6

Become stable

Question 7

How do chemical reactions tend to attain more stable electrons?

Answer 7

By transferring or sharing electrons

Question 8

Do nuclear reactions begin the stable or unstable isotope?

Answer 8

Unstable aka radioisotopes

Question 9

What is the difference between nuclear and chemical reactions?

Answer 9

Nuclear reactions are not affected by changes in temperature pressure or the presence of catalyst also nuclear reactions of A given radioisotope cannot be slow down sped up or stopped.

Question 10

What are the three types of radiation?

Answer 10

Alpha radiation, beta radiation, and gamma radiation

Question 11

What are alpha particles?

Answer 11

Helium nuclei

Question 12

What consist of an alpha particle?

Answer 12

Two protons and two neutrons and has a double positive charge

Question 13

What happens to the atomic number of the product when the Atom goes through alpha radiation?

Answer 13

Lowers by 2

Question 14

What happens to the mass number of the product when it goes through alpha radiation?

Answer 14

Lowered by 4

Question 15

Do alpha particles travel far and are penetrating?

Answer 15

No

Question 16

What can be stopped by s sheet of paper?

Answer 16

An alpha particle

Question 17

Are alpha particles damaging internally?

Answer 17

Yes

Question 18

When a neutron is broke apart what remains?

Answer 18

An electron (beta particle)

Question 19

What happens to the mass number during beta radiation?

Answer 19

Stays the same

Question 20

What happens to the atomic number during beta radiation?

Answer 20

Increased by 1

Question 21

What has more charge a beta particle or an alpha particle?

Answer 21

Alpha

Question 22

What is more penetrating? Alpha or beta

Answer 22

Beta

Question 23

What is stopped by wood and aluminum foil but can pass through paper?

Answer 23

Beta particles

Question 24

What is a high energy photon emitted by a radioisotope called?

Answer 24

Gamma ray

Question 25

What is electromagnetic radiation?

Answer 25

Gamma rays

Question 26

What happens to mass and atomic numbers during gamma radiation?

Answer 26

It doesn't change

Question 27

Are gamma rays penetrating?

Answer 27

Yes, they're most powerful

Question 28

Can gamma rays be stopped?

Answer 28

Yes but not completely

Question 29

When do atoms emit electromagnetic radiation?

Answer 29

When in the electron moves from a higher to a lower energy level