1.chemical bonding is the combining of atoms to form
a. atoms
b. energy levels
c. molecules
d. electrons

2.how do the atoms of a molecule stay together?
a. chemical bonds
b. magnetic force
c. attraction of electrons and neutrons
d. through physical changes

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays

How is electrolysis most commonly used to produce an energy source? a - splitting water molecules produces oxygen, which organisms breathe to fuel their bodies. b - splitting water molecules produces hydrogen gas, which is used to power machines through hydrogen fuel cells. c - splitting carbon dioxide molecules produces coal, a form of carbon that can be burned to produce heat. d - splitting carbon dioxide molecules produces natural gas, which can be burned to generate electricity in power plants.