Sci 1 (part 2)

Question 1

Under what circumstance can resonance apply?

Answer 1

bonding in molecules with more than two atoms

Question 2

What theory replaced the resonance model?

Answer 2

molecular orbital theory

Question 3

Does CO2 have a dipole moment?

Answer 3

no

Question 4

Highly polar molecules will exhibit strong ___ ___ ___ forces

Answer 4

van der Waals

Question 5

What type of molecules have the lowest melting and boiling points?

Answer 5

nonpolar

Question 6

What can lead to unstable nuclei?

Answer 6

varying the ratio of neutrons to protons

Question 7

What process involves the loss of a helium nucleus?

Answer 7

Alpha decay

Question 8

What process occurs during beta decay?

Answer 8

a neutron transforms to a proton

Question 9

what do unstable nuclei result in?

Answer 9

radioactive decay

Question 10

What is lost during Alpha decay?

Answer 10

two neutrons and two protons

Question 11

What type of nuclei break up by alpha decay?

Answer 11

large

Question 12

Above what size do nuclei decay by alpha decay?

Answer 12

larger than bismuth

Question 13

What does beta minus decay result in?

Answer 13

loss of one neutron and gain of one proton

Question 14

what is positron decay aka?

Answer 14

beta plus

Question 15

What are the electrons emitted during beta decay called?

Answer 15

beta particles

Question 16

Is the alpha particle stable or unstable?

Answer 16

stable

Question 17

What type of reaction occurs if there are too many neutrons?

Answer 17

beta minus decay

Question 18

What type of reaction occurs if there are too few neutrons?

Answer 18

positron emission

Question 19

What is a positron?

Answer 19

positively charged electron

Question 20

What other element is involved in a fusion reaction with deuterium?

Answer 20

tritium

Question 21

What are typically the masses of the products in a uranium fission reaction?

Answer 21

130 and 100 amu