atomic structure

Question 1

what is an atom?

Answer 1

smallest part of an element that can exist and still exhibit properties of the element

Question 2

what is each element represented by?

Answer 2

atomic symbol

Question 3

what are atoms made up of

Answer 3

neutrons protons electrons

Question 4

what are protons and neutrons collectively called

Answer 4

nucleons

Question 5

where are nucleons found?

Answer 5

centre of atom in nucleus

Question 6

where is nearly all the mass in an atom concentrated?

Answer 6

in the nucleus

Question 7

where are electrons found

Answer 7

at quite a distance from nucleus spinning in a series of levels called energy shells

Question 8

what constitutes the volume of the atom

Answer 8

movement of electrons around nucleus

Question 9

what charge does a proton have and what is its relative mass

Answer 9

positive
1

Question 10

what charge does a neutron have and what is its relative mass

Answer 10

neutral
1

Question 11

what charge does an electron have and what is its relative mass

Answer 11

negative
1/1836

Question 12

define atomic number

Answer 12

number of protons in an atom
represented by Z
unique to particular element
number of electrons

Question 13

according to what are elements in the periodic table arranged

Answer 13

according to atomic number

Question 14

define mass number

Answer 14

number of protons and neutrons
represented by A
also called nucleon number

Question 15

define energy shells

Answer 15

series of levels electrons spin around the nucleus

Question 16

describe the max amount each level can hold

Answer 16

2, 8, 8, 32

Question 17

how can the number of neutrons be calculated

Answer 17

mass number - atomic number