inside the atom

Question 1

what are atoms made of?

Answer 1

even smaller particles

Question 2

Different types of particles in the atom?

Answer 2

protons, neutrons and electrons

Question 3

contributions of rutherford to the development of the modern atomic model

Answer 3

concluded the atom is mostly made of empty space
confirmed the existence of smaller charged particles,
overall charge of an atom is neutral
(empty space, existence of smaller charged particles, charge is neutral)

Question 4

contributions of bohr to the development of the modern atomic model

Answer 4

electrons orbit the nucleus

Question 5

atomic number

Answer 5

number of protons in the nucleus

Question 6

mass number

Answer 6

number of protons + neutrons

Question 7

isotope

Answer 7

atoms with the same atomic number but different mass numbers.

Question 8

what causes radioactivity

Answer 8

emission of decay particles from unstable

atomic nuclei in order to become more stable.

Question 9

3 types of radiation

Answer 9

gamma, alpha and beta

Question 10

alpha radiation

Answer 10

consists of helium nuclei

can be blocked by a piece of paper

Question 11

beta radiation

Answer 11

consists of high speed electrons and positrons

can be blocked by thin aluminium and thick wood

Question 12

gamma radiation

Answer 12

form of electromagnetic radiation

can be stopped by many cm of lead or concrete

Question 13

nuclear fission

Answer 13

nucleus splits

Question 14

nuclear fusion

Answer 14

2 nuclei’s join/ fuse under large amounts of heat and energy

Question 15

Positives associated with nuclear power

Answer 15

low CO2

low operating costs

Question 16

what is an electron cloud

Answer 16

empty region of space that electrons move around.