atomic structure

Question 1

group 1 are the?

Answer 1

alkali metals

Question 2

group 7 are the?

Answer 2

halogens

Question 3

group 0/8 are the?

Answer 3

noble gases

Question 4

where are protons found?
what is their mass?

Answer 4

• nucleus
• 1 amu

Question 5

where are electrons found?
what is their mass?

Answer 5

• energy levels
• negligible mass

Question 6

where are neutrons found?
what is their mass?

Answer 6

• nucleus
• 1 amu

Question 7

atomic number?

Answer 7

numbers of protons in nucleus

Question 8

mass numbers?

Answer 8

number of protons + neutrons in nucleus

Question 9

what happens as you go down a group of elements?

Answer 9

reactivity increases down the group

Question 10

what is an isotope?

Answer 10

atoms with the same atomic number but a different mass number

Question 11

why are atoms electrically neutral overall?

Answer 11

same number of protons and electrons

Question 12

why are noble gasses stable?

Answer 12

their filled outer energy levels make them stable and unreactive

Question 13

to become stable atoms do what?

Answer 13

either gain or lose electrons to become stable

Question 14

metals

Answer 14

lose electrons to form positive ions

Question 15

non metals

Answer 15

gain electrons to form negative ions