science- atoms test basic 2

Question 1

ION

Answer 1

when atoms lose or gain electrons we stop calling them atoms and call them IONS

Question 2

cation

Answer 2

Cations are positively charged ions, meaning they have more protons than electrons.

Question 3

anion

Answer 3

anions are negatively charged ions, meaning they have more electrons than protons

Question 4

what are the rings around the nucleus called

Answer 4

shells

Question 5

what is radioactive decay & why do atoms do it

Answer 5

atoms do radioactive decay beacuse their nuclei are unstable, to become stable they release particles (beta & alpha). sometimes because there nucleus is so big that it just cant hold itself together

Question 6

what particles do gamma rays emit

Answer 6

electromagnetic waves

Question 7

alpha shortcut

Answer 7

-4 from mass number & -2 from atomic number

Question 8

beta shortcut

Answer 8

0 from the mass number & +1 to the atomic number

Question 9

alpha

Answer 9

is an atom whose neucleus is just to big, so it spts out 2 neutron and 2 protons in order to slim down. this is an alpha particle also know as Helium

Question 10

beta

Answer 10

in beta decay a neutron turns into a proton and electron. the elcetron comes out super fast and the electron is the beta particle

Question 11

half life

Answer 11

when a radioisotope has undergone 50% of its decay cycle

Question 12

radiation how its caused and how it occurs

Answer 12

Radiation is caused by the release of energy, either as electromagnetic waves or moving subatomic particles,

Question 13

periods

Answer 13

elements in the same period have the same number of occupied electron shells.

Question 14

groups

Answer 14

Elements in the same group have the same number of valence electrons.