C1 Atomic structure

Question 1

what does the periodic table do

Answer 1

lists all the chemical elements, with eight main groups

Question 2

how many types of atoms do elements contains?

Answer 2

only 1

Question 3

what happens in terms of atoms in chemical reactions

Answer 3

no new reactants are ver created or destroyed

Question 4

what did JJ thompson discover

Answer 4

electron, he realised that they had to have a negative charge as they were attracted to a positive charge (plum pudding)

Question 5

what did Rutherford show

Answer 5

plum pudding was wrong, suggested new atomic model, proposed that electrons must be orbiting around the nucleus, which contains positively charged protons

Question 6

what abou developments of neutrons

Answer 6

later discovered to explain missing mass in the atoms

Question 7

what does the number of electron in the outmost shell tell you

Answer 7

the way in which element will react

Question 8

atomic number

Answer 8

n of protons

Question 9

mass number

Answer 9

protons + neutrons

Question 10

what is an element

Answer 10

substance made up of atoms that have same number of protons in their nucleus

Question 11

what is a compound

Answer 11

two or more elements are chemically bond