Atoms & Radioactivity Test Review

CHEMISTRY I

MULTIPLE CHOICE Each of the following sentences can be completed correctly with one of the items listed below it. Choose the item and fill in the letter that precedes your choice in the appropriate space on your answer sheet. 2 points each.

Some questions were taken from the website below.

1) In nuclear fission reactions, mass is converted into

a) alpha particles

b) beta particles

c) gamma particles

d) energy

3) A reaction in which an atom breaks into two smaller atoms is likely a ______reaction

a) nuclear fission

b) nuclear fusion

c) transmutation

d) chemical

6) Which type of radiation is not made of particles?

a) alpha

b) beta

c) gamma

d) neutrino

7) A beta particle is emitted from an atom when

a) a proton fuses w/ an electron

b) electromagnetic radiation is released

c) a helium nucleus is released

d) a neutron decays

8) When an element decays by releasing a beta particle the number of ______increases

a) protons

b) neutrons

c) atoms

d) electrons

12) Which form of radioactivity is the most penetrating?

a) alpha

b) beta

c) gamma

d) they are equally penetrating.

14) Which type of radiation is not ionizing?

a) alpha

b) beta

c) gamma

d) visible light

Also complete the following in the book.

Pg894 34, 35, 36, 42, 44

PAGE DOWN FOR ANSWERS.

1d 3a 6c 7d 8a 12c 14d

From the book

34)nuclearrxn release more energy & involve a difference in the number of protons & neutrons in the atom whereas chem. Rxn don't change th e# of p&n

35)a: 2,4, 5; b: 1; c: 3,6

42) The pull force that holds the nucleus together acting to bind quarks & p & n together

44)a: gamma, b: beta