WorksheetsTest Review
Total questions: 20
Worksheet time: 15mins
What is transmutation?
combining multiple elements
changing two elements at the same time
process of changing one element to a different element
process of changing a combined element into one element
The mass numbers and atomic numbers on each side of the arrow must be equal.
True
False
What radioactive element is used in many fission reactions?
uranium
boron
titanium
sulfur
Where does fusion naturally occur?
mountains
beach
moon
sun
Define half-life:
What is nuclear fission?
What needs to be correct to make sure that the nucleus is stable?
proton:neutron ratio
proton:electron ratio
electron:neutron ratio
neutron:electron ratio
Isotopes of small mass elements are stable if the ratio is?
3:3
1:2
2:2
1:1
Isotopes of large mass elements are stable if the ratio is?
2:3
3:2
3:3
2:2
What happens when the forces in an atom with an unstable nucleus are not able to hold it together?
nuclear decay
new substance comes in
nothing
explosion
What is an element called when it loses electrons?
cation
neutron
anion
electron
What is responsible for mass?
proton
electron
neutron
ion
The charge that occurs when elements in group 16 bond.
+4
nothing
+2
-2
What group are noble gases in?
2
8
18
1
Where are electrons located?
electron cloud
nucleus
outer shell
inner shell
What are brittle solids?
metalloids
non-metals
metals
Isotopes have a different number of...?
protons
electrons
neutrons
shells
What are the majority of the elements on the periodic table?
non-metals
metalloids
metals
Elements in the same group have similar?
protons
neutrons
chemical properties
chemical reactions
This is the same as saying the number of protons.
atomic mass
cation
atomic number
anion
