Help please When you have two
isotopes of an atom, Carbon-12 and Carbon-13 for example, what has changed in the atomic structure?
A. Number of protons
B. Number of electrons
C. Number of neutrons

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

In saturated organic compounds, all the bonds between carbon atoms are called?

In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit