Chem

Question 1

LIST THE SUBATOMIC PARTICLES IN AN ATOM

Answer 1

Protons (+)
Neutrons (n/a)
Electrons (-)

Question 2

WHAT WAS RUTHERFORD’S EXPERIMENT?

Answer 2

• An atom is 99.99% space

- Nucleus is postively charged

Question 3

MASS NUMBER

Answer 3

Total number of protons and neutrons in the nucleus of an atom

Question 4

WHAT IS THE ELECTRON SHELL ARANGEMENT?

Answer 4

First shell = 2
Second shell = 8
Third shell = 8 (18)
e.g. Boron (B) - (2,3)

Question 5

WHAT ARE VALENCE ELECTRONS?

Answer 5

The electrons on the outer shell of an atom

Question 6

WRITE THE LEWIS DOT STRUCTURE OF BORON

Answer 6

google it you cant add pictures on this bloody thing

:(

Question 7

WHAT IS AN ISOTOPE?

Answer 7

An isotope is a variant of an atom on the Periodic Table with the same atomic number (number of protons), but a different number of neutrons (different atomic mass)

Question 8

DEFINE A NUCLEAR REACTION

Answer 8

Involves the nucleus - the nucleus splits, and the protons and neutrons are rearranged, releasing a tremendous amount of energy

Question 9

SIDENOTE - Normal chermical reactions involve electrons

Answer 9

(there’s nothing here)

Question 10

NUMBER OF PROTONS, NEUTRONS, AND ELCTRONS IN Carbon-12 V.S. Carbon-13

Answer 10

Carbon-12 –> P:6, N:6, E:6

Carbon-13 –> P:6, N:7, E:6