1.1 - inside the atom

Question 1

What is the approximate rage (prefix) of a nucleus diameter

Answer 1

X10^-15 m

(femto-meter)

Question 2

What is the approx range (prefix) of an atomic radius

Answer 2

x10^-10 m

Question 3

What word is used for both a neutron and proton

Answer 3

nucleon

Question 4

How are e- held in the atom

Answer 4

by electrostatic forces of attraction between the positive nucleus and themselves

Question 5

table of relative charges and masses of particles in an atom

Answer 5

P = 1, +1

E = 1/1840 , -1

N = 1 , 0

Question 6

what are the ‘simple’ charges/masses of subatomic particles relative to

Answer 6

the proton

Question 7

table of actual masses and charges of the particles inside an atom

• give units

Answer 7

P = 1.67x10^-23 , +1.6x10^-19

E = 9.11x10^-31 , -1.6x10^-19

N = 1.67x10^-23 , 0

(Kg) , (C)

Question 8

Isotope notation

• give letters and what they are correlated with

Answer 8

A (= nucleon no.)

X (= element’s symbol)

Z (= atomic / proton no.)

Question 9

what is each type of nucleus notated as in isotopic notation

Answer 9

nuclide

Question 10

define isotopes

Answer 10

atoms with the same no of protons but a diff no of neutrons

Question 11

What does the no. of neutrons affect

Answer 11

the physical properties or stability of an atom

Question 12

the equation of specific charge

(give units)

Answer 12

Specific charge = charge / mass

(C Kg^-1) = (C) / (KG)

Question 13

which particle of an atom has the highest specific charge

• why

Answer 13

e-

• smallest particle with same charge as proton (greater charge relative to its mass than a proton)

Question 14

how do you calc the charge of an ion

Answer 14

ion charge (+ or - number)

X

the charge of a Proton = overall charge in Coulombs