atomic and mass number

Question 1

what charge do electrons have?

Answer 1

a negative charge

Question 2

what charge do protons have?

Answer 2

a positive charge

Question 3

what charge do neutrons have?

Answer 3

a neutral charge

Question 4

what does the atomic number ( number on the bottom tell us? )

Answer 4

number of protons, which is also number of electrons because there is the same number of protons as there is electrons

Question 5

what does the mass number ( number on the top tell us? )

Answer 5

tells us the protons + neutrons

Question 6

how would you work out the number of neutrons?

Answer 6

subtract atomic number from mass number

Question 7

what are isotopes?

Answer 7

atoms of the same element, with different number of neutrons

Question 8

what are ions?

Answer 8

atoms with an overall charge, because they have either gained or lost an electron

Question 9

have positive ions gained or lost electrons?

Answer 9

positive ions have lost electrons

Question 10

have negative ions gained or lost electrons?

Answer 10

negative ions have gained electrons