Elements and atomic structure

Question 1

what are elements?

Answer 1

they are substances that cannot be broken down into simpler substances by chemical means and as the basic building blocks of all substances

Question 2

how many types of atoms are in an element?

Answer 2

1 type

Question 3

nucleus

Answer 3

in the centre of the atom and contains protons and neutrons

Question 4

proton - position, mass and charge

Answer 4

position: nucleus
mass: 1 amu
charge: positive 1

Question 5

neutron - position, mass and charge

Answer 5

position: nucleus
mass: 1 amu
charge: neutral 0

Question 6

electron - position, mass and charge

Answer 6

position: shells
mass: negligible
charge: negative -1

Question 7

atoms charge?

Answer 7

they have no overall electrical charge

Question 8

atomic number

Answer 8

the number of protons in the nucleus (equal to the number of electrons) the bottom number on an element

Question 9

mass number

Answer 9

the number of protons and neutrons added together
( the top number on the element)

Question 10

isotopes

Answer 10

same number of protons, different number of neutrons

Question 11

electronic structures what does the group number mean

Answer 11

number of electrons in outer shell

Question 12

electronic structures what does the period number mean

Answer 12

number of electron shells

Question 13

where are metals found in the periodic table

Answer 13

to the left and centre of the periodic table

Question 14

where are non metals found in the periodic table

Answer 14

to the right of the periodic table

Question 15

how are the elements arranged in the periodic table

Answer 15

in order of increasing atomic number

Question 16

positively charged nucleus

Answer 16

orbiting negatively charged electrons