A) Element B) compound C) molecule D) ion
A) plasma, proton, neutron B) proton, neutron, electron C) element, neutron, D) proton, plasma, molecule
A) proton B) neutron C) electron D) plasma
A) electron B) element C) proton D) neutron
A) positive B) negative C) both D) none
A) electron and proton B) neutron and electron C) proton and neutron D) proton and plasma
A) electrons B) neutrons and protons C) neutrons D) protons
A) according alphabetical order B) according to atomic mass C) according to number of ions D) according to atomic number
A) 12 B) none C) 5 D) 7
A) 7 B) 8 C) 10 D) 9
A) potassium B) copper C) gold D) silver
A) molecule B) neutron C) element D) electron
A) 12 B) 15 C) 17 D) 11
A) isomers B) isometric C) compound D) isotope
A) element B) positive C) ion D) compound |